This study compared changes in keratinized gingiva height after orthodontic treatment with and without alveolar corticotomy and bone grafting. Two groups of 35 orthodontic patients each were matched for various factors. Keratinized gingiva height increased significantly by 0.78 mm after treatment with corticotomy and bone grafting but decreased by 0.38 mm after conventional orthodontics. The study suggests that combining orthodontics with alveolar corticotomy and bone grafting can result in increased keratinized gingiva height, offering additional periodontal protection compared to conventional orthodontics alone.
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...iosrjce
This document summarizes a case report of a patient with a severely resorbed edentulous mandible who was successfully rehabilitated with two dental implants placed in the interforaminal region with ball attachments supporting an overdenture. After 10 years of follow-up, the patient was highly satisfied with the retention, comfort and function provided by the implant-retained overdenture. The case report also reviews literature on the use of implant-supported overdentures for treating resorbed edentulous ridges, finding they provide better function and retention compared to conventional dentures and reduce further bone loss.
The document describes an abstract book for a poster presentation at the Osteology Foundation on regenerative dentistry and dental tissue engineering. It provides details on the invited poster abstract committee members and categories. It announced that the best 5 abstracts in clinical and basic research categories will present to the committee. Prize awards for the best posters will be given. The accepted poster abstracts are numbered and organized by topic and presentation times are provided.
The document discusses splinting, including its history, definitions, aims, principles, indications, classifications, advantages, and disadvantages. Some key points:
- Splinting aims to immobilize and stabilize loose or mobile teeth by redistributing forces across multiple teeth.
- It has been used since ancient Egypt to stabilize teeth and fractures. Modern classifications include temporary, provisional, and permanent splints made of various materials.
- Indications include reducing tooth mobility from trauma, occlusal adjustment, or periodontal disease. Contraindications include active periodontal inflammation.
- Advantages are stabilizing teeth and tissues, but disadvantages include increased risk of decay and difficulties with oral hygiene.
H ridge augmentation with a collagen membrane and combination of particulated...threea3a
This prospective case series evaluated the use of a resorbable natural collagen membrane with a mixture of autogenous bone and anorganic bovine bone-derived mineral (ABBM) for lateral ridge augmentation to treat knife-edge ridges. 31 knife-edge ridge sites in 25 patients were treated. On average, 5.68 mm of lateral ridge augmentation was achieved after 8.9 months of healing. Histology showed ABBM was well incorporated into new bone formation. 76 implants were placed with no failures during an average follow-up of 20.88 months, demonstrating the technique can successfully augment knife-edge ridges for later implant placement.
This document provides an overview of secondary alveolar bone grafting for cleft lip and palate patients. It discusses the goals and optimal timing of the procedure, how patients are evaluated, and details regarding graft source options including iliac crest, tibia, rib, and cranial bone. It also covers pre-surgical orthodontics and preparation of the cleft alveolus, as well as post-operative care considerations.
Immediate Implant Placement And Restoration With Natural Tooth In The Maxilla...Abu-Hussein Muhamad
Anterior tooth loss and restoration in the esthetic zone is a common challenge in dentistry today. The prominent visibility of the area can be especially distressing to the patient and requires a timely and esthetically pleasing solution. Immediate single-tooth implantation followed by immediate provisionalization is becoming an increasingly desirable treatment that offers numerous benefits over conventional delayed loading. Provisionalization for immediately-placed implants using the patient’s existing tooth can enhance the final aesthetic outcome if certain steps are
followed. If the natural tooth is intact and can be used as a provisional, the emergence profile can be very similar to the preoperative condition. This article outlines a technique to use the patient’s natural tooth after extraction to provisionalize an implant.
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
Dentistry, Periodontics and General Dentistry.
The document discusses the anatomy and histology of the gingiva. It describes the different types of gingiva - marginal, attached, and interdental gingiva - and their clinical and microscopic features. Microscopically, the gingiva consists of stratified squamous epithelium and connective tissue. The gingival epithelium undergoes proliferation and differentiation, including keratinization in some areas. Keratin proteins and other proteins important for epithelial maturation are also discussed.
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...iosrjce
This document summarizes a case report of a patient with a severely resorbed edentulous mandible who was successfully rehabilitated with two dental implants placed in the interforaminal region with ball attachments supporting an overdenture. After 10 years of follow-up, the patient was highly satisfied with the retention, comfort and function provided by the implant-retained overdenture. The case report also reviews literature on the use of implant-supported overdentures for treating resorbed edentulous ridges, finding they provide better function and retention compared to conventional dentures and reduce further bone loss.
The document describes an abstract book for a poster presentation at the Osteology Foundation on regenerative dentistry and dental tissue engineering. It provides details on the invited poster abstract committee members and categories. It announced that the best 5 abstracts in clinical and basic research categories will present to the committee. Prize awards for the best posters will be given. The accepted poster abstracts are numbered and organized by topic and presentation times are provided.
The document discusses splinting, including its history, definitions, aims, principles, indications, classifications, advantages, and disadvantages. Some key points:
- Splinting aims to immobilize and stabilize loose or mobile teeth by redistributing forces across multiple teeth.
- It has been used since ancient Egypt to stabilize teeth and fractures. Modern classifications include temporary, provisional, and permanent splints made of various materials.
- Indications include reducing tooth mobility from trauma, occlusal adjustment, or periodontal disease. Contraindications include active periodontal inflammation.
- Advantages are stabilizing teeth and tissues, but disadvantages include increased risk of decay and difficulties with oral hygiene.
H ridge augmentation with a collagen membrane and combination of particulated...threea3a
This prospective case series evaluated the use of a resorbable natural collagen membrane with a mixture of autogenous bone and anorganic bovine bone-derived mineral (ABBM) for lateral ridge augmentation to treat knife-edge ridges. 31 knife-edge ridge sites in 25 patients were treated. On average, 5.68 mm of lateral ridge augmentation was achieved after 8.9 months of healing. Histology showed ABBM was well incorporated into new bone formation. 76 implants were placed with no failures during an average follow-up of 20.88 months, demonstrating the technique can successfully augment knife-edge ridges for later implant placement.
This document provides an overview of secondary alveolar bone grafting for cleft lip and palate patients. It discusses the goals and optimal timing of the procedure, how patients are evaluated, and details regarding graft source options including iliac crest, tibia, rib, and cranial bone. It also covers pre-surgical orthodontics and preparation of the cleft alveolus, as well as post-operative care considerations.
Immediate Implant Placement And Restoration With Natural Tooth In The Maxilla...Abu-Hussein Muhamad
Anterior tooth loss and restoration in the esthetic zone is a common challenge in dentistry today. The prominent visibility of the area can be especially distressing to the patient and requires a timely and esthetically pleasing solution. Immediate single-tooth implantation followed by immediate provisionalization is becoming an increasingly desirable treatment that offers numerous benefits over conventional delayed loading. Provisionalization for immediately-placed implants using the patient’s existing tooth can enhance the final aesthetic outcome if certain steps are
followed. If the natural tooth is intact and can be used as a provisional, the emergence profile can be very similar to the preoperative condition. This article outlines a technique to use the patient’s natural tooth after extraction to provisionalize an implant.
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
Dentistry, Periodontics and General Dentistry.
The document discusses the anatomy and histology of the gingiva. It describes the different types of gingiva - marginal, attached, and interdental gingiva - and their clinical and microscopic features. Microscopically, the gingiva consists of stratified squamous epithelium and connective tissue. The gingival epithelium undergoes proliferation and differentiation, including keratinization in some areas. Keratin proteins and other proteins important for epithelial maturation are also discussed.
This document provides information on onlay bone grafts, including definitions, classifications, sources, types, structure, indications, and surgical protocols. An onlay bone graft is a graft where transplanted tissue is laid directly onto the surface of recipient bone. Sources include intraoral sites like the mandibular ramus and symphysis, as well as extraoral sites like the calvarium and iliac crest. Surgical protocols are described for harvesting bone grafts from various donor sites and performing onlay grafting procedures. Complications and bone healing are also briefly discussed.
types and classification of dental implantsDesa Ghanavi
This document discusses types and classifications of dental implants. It describes 5 main classifications: 1) based on implant design, which includes blade, root form, subperiosteal, transosteal, and intramucosal implants; 2) based on attachment mechanism, which includes fibrointegration and osseointegration; 3) based on body design, including cylindrical, threaded, plateau, perforated, solid, and hollow implants; 4) based on surface, such as smooth, machined, textured, and coated surfaces; and 5) based on material, including metallic, ceramic, polymeric, and carbon implants. Key advantages of implants include maintaining bone height/width and improved stability, retention, and esthetics
Vertical ridge augmentation is sometimes required for dental implant placement. The presentation looks at various conventional and newer techniques for ridge augmentation in the oral cavity.
Ridge augmentation procedures /orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
this is basic seminar on implant retained maxillofacial prosthesis including that which are the different types of facial defects and how are they rehabilitated with implants.
The content covers majority of the aspect of immediate implant placement - why immediate implants?, case selection, decision making, classifications, surgical technique, healing following immediate implant placement, immediate implants in infected sockets/periapical infections, literature reviews and recommendations for clinical practice.
Immediate Placement and Provisionalization of Maxillary Posterior Single Impl...Abu-Hussein Muhamad
Functional immediate load is the most recent concept. This describes a load, within physiological limits, applied to implants before the osseo-integration process is completed. One of the treatment options offered to patients requiring replacement of one or more teeth is the use of prostheses supported by implants. Patients nowadays demand greater aesthetic and functional restorations; therefore, the clinician tries to reduce implant load time. All this leads to the implementation of several modifications to the conventional surgical and prosthetic protocol leading to a reduction in the load time of the implant. This is a case report of the immediate loading of posterior implant.
This document discusses different types of bone grafts used in periodontics. It describes autografts, which are transplanted from one site to another within the same individual, as the gold standard due to their osteoinductive properties. Autografts can be obtained from both extraoral sites like the hip or iliac crest, as well as intraoral sites like the tuberosity, tori, or osseous coagulum collected from the surgical site. The document outlines the advantages and disadvantages of various graft materials and their properties like osteoinduction, osteoconduction, and osteogenesis that facilitate bone regeneration.
“Program on Ridge Split and Ridge Augmentation for Implant Placement”- Two lectures on “Concepts of Ridge Augmentation” and “Novel and Simpler Approaches to Ridge Augmentation”. Event organized by the Dental Experts and held at Paneenya Mahavidyalaya Institute of Dental Sciences, Hyderabad, India on 18/11/2016.
A Clinical Classification System for the Treatment of Postextraction SitesArt...Nguyễn Thị Minh Hiền
This document proposes a new clinical classification system for postextraction sites based on socket anatomy, bone volume, and soft tissue level. The system categorizes sites into 4 classes:
- Class I sites have intact socket walls, adequate bone volume, and soft tissues for immediate or early implant placement.
- Class II sites are also intact but have anatomical limitations preventing immediate placement, requiring ridge preservation or delayed placement.
- Class III sites have 20-50% resorption of buccal bone but adequate implant positioning, allowing augmentation and early or staged placement.
- Class IV sites have over 50% buccal resorption and unfavorable conditions, usually requiring augmentation before staged placement.
Adjunctive role of Orthodontic Therapy in PeriodontologyNavneet Randhawa
This document summarizes the adjunctive role of orthodontic therapy in periodontology. Some key points:
- Orthodontic tooth movement can benefit adult patients by correcting tooth malposition that makes cleaning difficult and increases periodontal disease risk.
- Light, prolonged orthodontic forces can move teeth without damaging tissues if excellent oral hygiene is maintained. However, some tissue necrosis is unavoidable.
- Tooth movement through cortical bone can create dehiscences if the bone is not remodeled quickly enough in front of the tooth.
- Tooth movement into existing infrabony pockets or compromised bone areas does not further periodontal attachment loss if the area is first treated and hygiene is
2 newhistory and evolution of implants1/ dental implant courses by Indian den...Indian dental academy
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The orthodontist can avoid fenestration and dehiscence by determining alveolar morphology through imaging such as CBCT prior to treatment. Heavy forces, ectopic tooth positions, and movement beyond the limits of the alveolar housing can cause bone loss. Fenestrations are more common in the maxilla, especially around molars and canines, while dehiscences occur more in the mandible around incisors. Rapid maxillary expansion can also cause fenestrations and dehiscences. Maintaining an appropriate force level and following the limits of the alveolar bone can help minimize these risks.
This document summarizes research on osseointegration conducted by Per-Ingvar Brinemark and collaborators since 1952. Their experimental studies in animals analyzed tissue response to implanted titanium fixtures and developed techniques for reconstructing bone defects using grafts stabilized by integrated fixtures. This led to applying osseointegration clinically in 1965 to anchor dental prostheses via titanium implants integrated directly into jawbones, providing stable long-term function without intermediate soft tissues. Their research established osseointegration as a viable method for reconstructing edentulous jaws and anchoring prostheses.
Advanced soft tissue & hard tissue grafting Clinical TrainingDr. Rajat Sachdeva
Growth Factors, Tenting screws, Sinuslifts, Endoscopic evaluation of sinuslifts, Block grafts, Particulate grafts, Exomed application, Bone ring, CT/FGG grafts harvest/application, Peri-implantitis management, Suturing. Armamentarium, Choice of Biomaterial.
Course Insight :-
Ø Harvesting of autogenous bone from different intraoral sites
Ø Selection of the appropriate graft substitute
Ø Performing minimal invasive grafting procedures
Ø Successfully performing all the intraoral bone grafting procedures in implant practice such as
a) Using Particulate bone substitutes to graft the periimplant bone defects
b) Socket grafting
best dental care, best dental clinic in ashok vihar, best orthodontic treatment in delhi, braces treatment in ashok vihar, bright smile, dental clinic in new delhi, dentist in ashok vihar, dr.rajat sachdeva, india, modi dental clinic, one hour teeth whitening treatment delhi, oral health care, orthodontic treatment in delhi, sachdeva dental clinic, smile designing, smile makeover, teeth whitening delhi, tooth whitening delhi
This document describes a technique for selectively intruding overerupted molars in adult patients using a combination of selective alveolar corticotomies and a modified full-coverage maxillary splint with nickel-titanium springs. Two case reports are presented where this approach successfully intruded overerupted maxillary molars within 2.5-4 months without side effects. The technique aims to take advantage of the regional acceleratory phenomenon caused by corticotomies to increase orthodontic treatment efficiency for adult patients who require molar intrusion.
This document provides information on dental implants including:
1. It defines a dental implant as an artificial titanium fixture surgically placed into the jawbone to replace a missing tooth and root.
2. Implant dentistry/implantology is concerned with replacing missing teeth and supporting structures with prostheses anchored to the jawbone.
3. Common implant designs include parallel or tapered, threaded screw-shaped implants which are the most commonly used type today.
This document discusses the interrelationship between orthodontics and periodontics. It notes that orthodontic tooth movement can benefit periodontal patients by improving access for cleaning and potentially eliminating the need for osseous surgery in some cases of bone defects. However, it also acknowledges that orthodontic treatment can potentially cause harmful effects like gingival recession, root resorption, or reduced alveolar bone height if excessive forces are used. The document provides details on how different malocclusions and orthodontic appliances can influence plaque accumulation and periodontal health. It emphasizes the importance of a multidisciplinary approach between orthodontists and periodontists to properly treat patients with periodontal and orthodontic needs.
This document discusses considerations for fixed prosthodontics in patients with compromised periodontal health. Key points include:
- Periodontal health plays an important role in the longevity of restorations, and defective prostheses can contribute to periodontal disease progression. Successful treatment requires cooperation between periodontists and prosthodontists.
- Periodontal issues must be resolved before restorative treatment to avoid tensions on the periodontium from tooth movement. Supragingival margins and open embrasures are preferred for periodontal health.
- Temporary splinting can help determine the prognosis of a permanent restoration in periodontally compromised patients. Occlusion should not interfere with plaque control.
This document provides information on onlay bone grafts, including definitions, classifications, sources, types, structure, indications, and surgical protocols. An onlay bone graft is a graft where transplanted tissue is laid directly onto the surface of recipient bone. Sources include intraoral sites like the mandibular ramus and symphysis, as well as extraoral sites like the calvarium and iliac crest. Surgical protocols are described for harvesting bone grafts from various donor sites and performing onlay grafting procedures. Complications and bone healing are also briefly discussed.
types and classification of dental implantsDesa Ghanavi
This document discusses types and classifications of dental implants. It describes 5 main classifications: 1) based on implant design, which includes blade, root form, subperiosteal, transosteal, and intramucosal implants; 2) based on attachment mechanism, which includes fibrointegration and osseointegration; 3) based on body design, including cylindrical, threaded, plateau, perforated, solid, and hollow implants; 4) based on surface, such as smooth, machined, textured, and coated surfaces; and 5) based on material, including metallic, ceramic, polymeric, and carbon implants. Key advantages of implants include maintaining bone height/width and improved stability, retention, and esthetics
Vertical ridge augmentation is sometimes required for dental implant placement. The presentation looks at various conventional and newer techniques for ridge augmentation in the oral cavity.
Ridge augmentation procedures /orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
this is basic seminar on implant retained maxillofacial prosthesis including that which are the different types of facial defects and how are they rehabilitated with implants.
The content covers majority of the aspect of immediate implant placement - why immediate implants?, case selection, decision making, classifications, surgical technique, healing following immediate implant placement, immediate implants in infected sockets/periapical infections, literature reviews and recommendations for clinical practice.
Immediate Placement and Provisionalization of Maxillary Posterior Single Impl...Abu-Hussein Muhamad
Functional immediate load is the most recent concept. This describes a load, within physiological limits, applied to implants before the osseo-integration process is completed. One of the treatment options offered to patients requiring replacement of one or more teeth is the use of prostheses supported by implants. Patients nowadays demand greater aesthetic and functional restorations; therefore, the clinician tries to reduce implant load time. All this leads to the implementation of several modifications to the conventional surgical and prosthetic protocol leading to a reduction in the load time of the implant. This is a case report of the immediate loading of posterior implant.
This document discusses different types of bone grafts used in periodontics. It describes autografts, which are transplanted from one site to another within the same individual, as the gold standard due to their osteoinductive properties. Autografts can be obtained from both extraoral sites like the hip or iliac crest, as well as intraoral sites like the tuberosity, tori, or osseous coagulum collected from the surgical site. The document outlines the advantages and disadvantages of various graft materials and their properties like osteoinduction, osteoconduction, and osteogenesis that facilitate bone regeneration.
“Program on Ridge Split and Ridge Augmentation for Implant Placement”- Two lectures on “Concepts of Ridge Augmentation” and “Novel and Simpler Approaches to Ridge Augmentation”. Event organized by the Dental Experts and held at Paneenya Mahavidyalaya Institute of Dental Sciences, Hyderabad, India on 18/11/2016.
A Clinical Classification System for the Treatment of Postextraction SitesArt...Nguyễn Thị Minh Hiền
This document proposes a new clinical classification system for postextraction sites based on socket anatomy, bone volume, and soft tissue level. The system categorizes sites into 4 classes:
- Class I sites have intact socket walls, adequate bone volume, and soft tissues for immediate or early implant placement.
- Class II sites are also intact but have anatomical limitations preventing immediate placement, requiring ridge preservation or delayed placement.
- Class III sites have 20-50% resorption of buccal bone but adequate implant positioning, allowing augmentation and early or staged placement.
- Class IV sites have over 50% buccal resorption and unfavorable conditions, usually requiring augmentation before staged placement.
Adjunctive role of Orthodontic Therapy in PeriodontologyNavneet Randhawa
This document summarizes the adjunctive role of orthodontic therapy in periodontology. Some key points:
- Orthodontic tooth movement can benefit adult patients by correcting tooth malposition that makes cleaning difficult and increases periodontal disease risk.
- Light, prolonged orthodontic forces can move teeth without damaging tissues if excellent oral hygiene is maintained. However, some tissue necrosis is unavoidable.
- Tooth movement through cortical bone can create dehiscences if the bone is not remodeled quickly enough in front of the tooth.
- Tooth movement into existing infrabony pockets or compromised bone areas does not further periodontal attachment loss if the area is first treated and hygiene is
2 newhistory and evolution of implants1/ dental implant courses by Indian den...Indian dental academy
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The orthodontist can avoid fenestration and dehiscence by determining alveolar morphology through imaging such as CBCT prior to treatment. Heavy forces, ectopic tooth positions, and movement beyond the limits of the alveolar housing can cause bone loss. Fenestrations are more common in the maxilla, especially around molars and canines, while dehiscences occur more in the mandible around incisors. Rapid maxillary expansion can also cause fenestrations and dehiscences. Maintaining an appropriate force level and following the limits of the alveolar bone can help minimize these risks.
This document summarizes research on osseointegration conducted by Per-Ingvar Brinemark and collaborators since 1952. Their experimental studies in animals analyzed tissue response to implanted titanium fixtures and developed techniques for reconstructing bone defects using grafts stabilized by integrated fixtures. This led to applying osseointegration clinically in 1965 to anchor dental prostheses via titanium implants integrated directly into jawbones, providing stable long-term function without intermediate soft tissues. Their research established osseointegration as a viable method for reconstructing edentulous jaws and anchoring prostheses.
Advanced soft tissue & hard tissue grafting Clinical TrainingDr. Rajat Sachdeva
Growth Factors, Tenting screws, Sinuslifts, Endoscopic evaluation of sinuslifts, Block grafts, Particulate grafts, Exomed application, Bone ring, CT/FGG grafts harvest/application, Peri-implantitis management, Suturing. Armamentarium, Choice of Biomaterial.
Course Insight :-
Ø Harvesting of autogenous bone from different intraoral sites
Ø Selection of the appropriate graft substitute
Ø Performing minimal invasive grafting procedures
Ø Successfully performing all the intraoral bone grafting procedures in implant practice such as
a) Using Particulate bone substitutes to graft the periimplant bone defects
b) Socket grafting
best dental care, best dental clinic in ashok vihar, best orthodontic treatment in delhi, braces treatment in ashok vihar, bright smile, dental clinic in new delhi, dentist in ashok vihar, dr.rajat sachdeva, india, modi dental clinic, one hour teeth whitening treatment delhi, oral health care, orthodontic treatment in delhi, sachdeva dental clinic, smile designing, smile makeover, teeth whitening delhi, tooth whitening delhi
This document describes a technique for selectively intruding overerupted molars in adult patients using a combination of selective alveolar corticotomies and a modified full-coverage maxillary splint with nickel-titanium springs. Two case reports are presented where this approach successfully intruded overerupted maxillary molars within 2.5-4 months without side effects. The technique aims to take advantage of the regional acceleratory phenomenon caused by corticotomies to increase orthodontic treatment efficiency for adult patients who require molar intrusion.
This document provides information on dental implants including:
1. It defines a dental implant as an artificial titanium fixture surgically placed into the jawbone to replace a missing tooth and root.
2. Implant dentistry/implantology is concerned with replacing missing teeth and supporting structures with prostheses anchored to the jawbone.
3. Common implant designs include parallel or tapered, threaded screw-shaped implants which are the most commonly used type today.
This document discusses the interrelationship between orthodontics and periodontics. It notes that orthodontic tooth movement can benefit periodontal patients by improving access for cleaning and potentially eliminating the need for osseous surgery in some cases of bone defects. However, it also acknowledges that orthodontic treatment can potentially cause harmful effects like gingival recession, root resorption, or reduced alveolar bone height if excessive forces are used. The document provides details on how different malocclusions and orthodontic appliances can influence plaque accumulation and periodontal health. It emphasizes the importance of a multidisciplinary approach between orthodontists and periodontists to properly treat patients with periodontal and orthodontic needs.
This document discusses considerations for fixed prosthodontics in patients with compromised periodontal health. Key points include:
- Periodontal health plays an important role in the longevity of restorations, and defective prostheses can contribute to periodontal disease progression. Successful treatment requires cooperation between periodontists and prosthodontists.
- Periodontal issues must be resolved before restorative treatment to avoid tensions on the periodontium from tooth movement. Supragingival margins and open embrasures are preferred for periodontal health.
- Temporary splinting can help determine the prognosis of a permanent restoration in periodontally compromised patients. Occlusion should not interfere with plaque control.
Long term effects of orthodontic treatment /certified fixed orthodontic co...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Quinidine, Albino rats, Pentylenetetrazole, Gap junctionsiosrjce
This document describes a case study involving periodontally accelerated osteogenic orthodontics (PAOO) to accelerate orthodontic tooth movement. PAOO involves selective alveolar decortications and bone grafting to induce regional acceleratory phenomenon and reduce orthodontic treatment time. The case report describes performing corticotomy and bone grafting to close a 6.5mm space between teeth in a 27-year-old female patient, achieving the space closure in 4 months, which is significantly faster than conventional orthodontic treatment. PAOO provides benefits like reduced treatment time, increased bone volume, and improved post-treatment stability compared to traditional orthodontics.
Periodontally Accelerated Osteogenic Orthodontics: A Surgical Technique and C...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
- Extractions for orthodontic purposes have always been controversial, as some believe all teeth can be aligned without extractions while others believe extractions are sometimes necessary to treat malocclusions.
- Factors like a patient's medical history, oral hygiene, dental health, and the quality of their teeth affect whether extractions are recommended.
- While premolars are most commonly extracted, other teeth may be extracted depending on the specifics of the malocclusion and what is needed to achieve the best possible alignment and occlusion.
Periodontally Accelerated Osteogenic Orthodontics with Piezoelectric Surgery...Abu-Hussein Muhamad
Piezosurgery has been applied in dentistry for many years. This paper reviews specifically the treatment applications that have been used in surgically assisted orthodontic treatment since the last decade. Periodontally Accelerated Osteogenic Orthodontics (PAOO) is a surgical technique which results in an increase in alveolar bone width, shorter treatment time, increase post-treatment stability, and decrease amount of apical root resorption. The aim of this case report is to compare the use of micro-motor and piezoelectric surgery unit during decortication in Periodontally Accelerated Osteogenic Orthodontics technique.
Key words: Piezoelectric surgery, piezosurgery, Periodontal regeneration , accelerated tooth movement
This document discusses strategies for minimally invasive endodontics. It emphasizes preserving tooth structure to maximize strength and longevity. Smaller access openings and conservative root canal shaping are recommended to avoid weakening tooth structure. Thorough disinfection can still be achieved with smaller canal preparations when combined with improved irrigation methods. Restorations should maintain coronal and peri-cervical tooth structure to reinforce the tooth through the "ferrule effect." The goal of minimally invasive endodontics is effective treatment while minimizing structural damage to teeth.
Gingival prosthesis: an efficient solution to severe gingival recessions in a...Premier Publishers
Clinical attachment loss in periodontal disease may lead to gingival recessions, elongation of the crowns, black triangles and unaesthetic appearance of maxillary anterior. For these problems surgical procedures may not have acceptable results in case of severe gingival recessions. Thus, non-surgical methods, like gingival prostheses/veneers, should be considered as an alternative treatment approach in such cases. It is an easy constructed and practical device to optimize the esthetic and functional outcome after the control of periodontal disease. This case report of young female patient illustrates treatment for an advanced tissue loss in a maxillary anterior area using a removable gingival prosthesis/veneers. This treatment modality offered a good optional solution and optimum esthetic patient satisfaction with a 2-year follow-up.
This document summarizes research on dental implants in patients with a history of periodontitis. It finds that while implant survival rates are generally acceptable for both partially and fully edentulous patients with a history of periodontitis, these patients are at greater risk of peri-implantitis than those without periodontitis. The main pathogens associated with both periodontitis and peri-implantitis are similar. History of periodontitis, diabetes, smoking, and poor oral hygiene are identified as risk indicators for peri-implantitis, though more research is still needed to identify true risk factors.
This document discusses adult orthodontics and summarizes key information on several topics. It begins with an overview of adult orthodontics and differences between treating adults versus adolescents. Key differences discussed include reduced growth potential in adults, greater concern over appliance appearance, reduced tolerance of appliances by adults, and increased risk of periodontal disease in adults. The document also summarizes information on accelerated orthodontics, invisible orthodontics, the relationship between orthodontics and temporomandibular disorders, and management of bruxism.
This document discusses the interrelationship between prosthodontics and periodontics in achieving success in fixed partial denture treatment. It emphasizes the importance of proper diagnosis, treatment planning, and preparation of the periodontium prior to prosthetic treatment. This includes management of periodontal disease, gingival problems, occlusal issues, and bone or soft tissue defects. Factors like margin placement, splinting, and impressions are also addressed to minimize risk of damaging the periodontal attachment.
This document discusses a clinical case where a 63-year old man with excessive tooth wear and missing upper lateral teeth was treated with dental implants and fixed prosthetics. Two implants were placed to replace the missing lateral teeth. A temporary fixed prosthesis was installed at an increased vertical dimension to improve facial aesthetics and function. After 4 months, final ceramic crowns and bridges were placed at the new vertical dimension. The use of implants allowed for a fixed rather than removable solution, meeting the patient's demands and improving his quality of life.
Partial or complete edentulism has multiple implications in relation to function, esthetics and future rehabilitative treatment. This case report illustrates the management of a patient with extreme consequences of partial edentulism in the maxillary arch and total edentulism in the mandibular arch. The main clinical findings were unopposed remaining teeth, over eruption of the remaining teeth, loss of vertical dimension of occlusion, and significant disfigurement of the occlusal plane. Following the diagnostic procedure, a well-coordinated prosthodontic treatment involving liaison with other dental disciplines was indicated. The management involved an innovative combination of fixed and removable prostheses in conjunction with intentional root canal therapy of the remaining natural teeth. Series of provisional prostheses were applied to facilitate the transition to the final treatment.
Key-words: Edentulism, Vertical dimension, Provisional Restoration, Fixed and Removable prosthesis
Periodontal changes in ortho treatment/certified fixed orthodontic courses by...Indian dental academy
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1) The document reviews gingival augmentation procedures and aims to answer 5 common clinical questions through a systematic review of literature.
2) It finds a lack of in-depth comparative studies and randomized clinical trials to draw strong conclusions but makes recommendations based on case reports and series.
3) For question 1, it finds that maintaining adequate gingiva, such as 2mm, is important for restorations with intracrevicular margins based on clinical observations.
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...Abu-Hussein Muhamad
Abstract: Severe atrophy of the inferior alveolar process and underlying basal bone often results in problems with a lower denture. These problems include insufficient retention of the lower denture, intolerance to loading by the mucosa, pain, difficulties with eating and speech, loss of soft-tissue support, and altered facial appearance. These problems are a challenge for the prosthodontist and surgeon. In this case report, patient with resorbed edentulous mandible was successfully rehabilitated using two dental implants placed in the interforaminal region with ball abutments opposing conventional maxillary complete denture. Key Words: dental implants; dental prosthesis, implant-supported; resorption,
Biologic width understanding and its preservationSah Oman
This document discusses the biologic width, which refers to the dimensions of the dentogingival junction including the epithelial attachment and underlying connective tissue. It was first described as being on average 2.04mm, consisting of 0.97mm of epithelial attachment and 1.07mm of connective tissue. Placing restorative margins within the biologic width can lead to gingival inflammation, clinical attachment loss, bone loss, and gingival recession. The document discusses different options for margin placement and how to evaluate whether the biologic width has been violated.
Orthodontics has been developing greatly in achieving the desired results both clinically and technically.
Today, it is still very challenging to reduce the duration of orthodontic treatments.
It is one of the common deterents that the orthodontist faces and it causes irritation among adults plus increasing risks of caries, gingival recession, and root resorption.
A number of attempts have been made to create different approaches both preclinically and clinically in order to achieve quicker results, but still there are a lot of uncertainties and unanswered questions towards most of these techniques.
full mouth rehabilitation of partially and fully edentulous patient with crow...Merenguita
This case report describes the full mouth rehabilitation of a patient with short clinical crowns in the mandibular anterior teeth and edentulous maxilla. A thorough examination including diagnostic wax-up determined 2mm of additional crown length was needed via crown lengthening surgery. Single crowns were placed on the anterior teeth along with a maxillary complete denture and mandibular removable partial denture with a lingual plate. The treatment aimed to prevent extrusion of the anterior teeth and reduce forces on the maxilla to avoid combination syndrome. A 4 month recall found healthy gingiva and the patient was satisfied with function and esthetics.
This study compared the skeletal and dental transverse effects of surgically assisted rapid maxillary expansion (SARME) using Haas versus Hyrax expanders in 38 patients aged 18-39 years. Measurements of maxillary width, upper intermolar width, and molar inclination were made before, immediately after, and 4 months after SARME. Both groups showed significant increases in maxillary width and intermolar width immediately after SARME, with decreases at 4 months but remaining significantly wider than before. The amount of maxillary widening was about 70% of the intermolar width increase. Clinically, the transverse effects were similar between the Haas and Hyrax groups.
Immediate effects of rapid maxillary expansion with haas-type and hyrax-type ...Dr. Carlos Joel Sequeira.
This randomized clinical trial evaluated and compared the immediate effects of rapid maxillary expansion (RME) using Haas-type and hyrax-type expanders through cone-beam computed tomography (CBCT) scans. 33 subjects were randomly assigned to either the Haas or hyrax group. Both groups underwent RME with 4 quarter turns of initial activation followed by 2 quarter turns per day until 8mm of expansion was reached. CBCT scans were taken before and after expansion. Measurements showed that both appliances significantly increased maxillary transverse dimensions, with greater skeletal than dental expansion. The hyrax group demonstrated greater orthopedic effects and less tipping of maxillary molars compared to the Haas group, but the differences were less
The aim of this retrospective study was to cephalometrically evaluate and compare the skeletal and dental effects of a transverse sagittal maxillary expander (TSME) and a Hyrax-type expander (RME) in children with maxillary hypoplasia. Fifty subjects were divided into two groups, one treated with a TSME and the other with a RME. Cephalometric measurements before and after treatment showed that the TSME group had a statistically significant increase in anterior positioning of the maxilla and maxillary incisors, while the RME group saw an increase in upper molar positioning and total anterior facial height. The TSME was found to be more effective at producing skeletal changes and correcting max
This document summarizes the technique of adult rapid maxillary expansion with corticotomy. It begins by reviewing literature showing rapid maxillary expansion is effective for growing children but often fails in adults due to increased facial skeleton rigidity. The described technique uses corticotomy cuts to weaken the rigid adult facial skeleton and surgically open the midpalatal suture to allow rapid maxillary expansion. Specifically, it involves making lateral cuts along the maxillary sinus wall and zygomatic buttress and a midline cut through the sealed palatal suture to separate the maxilla from surrounding bones. This corticotomy is intended to reduce resistance and enable maxillary expansion in adults via the same orthodontic forces used successfully in children.
This finite element analysis compared the biomechanical effects of different corticotomy approaches on tooth movement during maxillary canine retraction. 24 corticotomy models were designed varying the position, distance from the canine, and width of the cuts. The results showed that a distal corticotomy close to the canine resulted in the greatest canine displacement and lowest strain in the periodontal ligament, suggesting it may be the best approach for facilitating canine retraction. As the distance between the corticotomy and canine increased, its biomechanical effects on tooth movement decreased. The width of the cut did not significantly influence the results.
Este estudio piloto comparó clínicamente la velocidad del movimiento ortodóncico y los cambios en los parámetros periodontales entre pacientes tratados con ortodoncia convencional y ortodoncia facilitada con corticotomía para el tratamiento de apiñamiento dental anterior. Diez pacientes participaron, 5 en cada grupo. Los resultados mostraron que los dientes sometidos a ortodoncia y corticotomía presentaron una mayor velocidad de movimiento durante los primeros 30 días en comparación con el grupo control. No hubo diferencias significativas
Corticotomía microcirugía ortodóntica en paciente con periodonto reducido...Dr. Carlos Joel Sequeira.
El tratamiento de una paciente con periodontitis, maloclusión y periodonto reducido requirió varias técnicas quirúrgicas y ortodónticas. Se realizó una corticotomía con bisturí piezoeléctrico en el maxilar superior para acelerar el tratamiento ortodóntico. Adicionalmente, se llevó a cabo cirugía periapical para eliminar una lesión en el diente 12, regeneración tisular guiada en el diente 23 y relleno óseo de defectos. Seis semanas
Este documento presenta una perspectiva histórica de la evolución de la técnica quirúrgica de corticotomía desde su origen en 1892 hasta su última modificación en 2012. Detalla las diferentes técnicas propuestas a través del tiempo, incluyendo la técnica de bloques óseos de Köle en 1959, la ortodoncia rápida de Chung en 1975-1978, la técnica alveolar selectiva de Generson en 1978 y la ortodoncia osteogénica acelerada y periodontalmente acelerada de Wilcko en 2001,
Comparison of corticotomy facilitated vs standard tooth-movement techniques i...Dr. Carlos Joel Sequeira.
1) The study compared the effects of a corticotomy-facilitated (CF) technique to a standard tooth movement (S) technique in accelerating orthodontic tooth movement in dogs.
2) The maxillary first premolars were distalized using miniscrews and nickel-titanium coil springs on both the right (CF) and left (S) sides of the maxilla.
3) Tooth movement was significantly faster with the CF technique, which involved corticotomy cuts and perforations, doubling the rate of tooth movement compared to the standard technique.
This document discusses the debate around whether orthodontists should mount dental casts on an articulator. While articulators are useful for other dental specialties, their validity in orthodontics is equivocal. Supporters argue that articulators allow detection of minor occlusal discrepancies and aid in achieving ideal condyle position. However, others argue that articulators are unnecessary given tolerance for occlusal discrepancies and lack of evidence that they improve outcomes. The document examines evidence on both sides but ultimately argues against the routine use of articulators in orthodontics.
This study used magnetic resonance imaging (MRI) to evaluate condylar position in the glenoid fossae of 19 subjects under three different bite registration conditions: centric occlusion, centric relation, and Roth power centric relation. The results showed that (1) all measurements had large variations and no statistically significant differences between the bite registrations, and (2) most condyles (87%) were concentric in the anteroposterior plane under all three registrations. The study concludes that positioning the condyles in specific positions using different bite registrations is not supported as a preventive measure or diagnostic/treatment tool for temporomandibular disorders.
1) The document argues against routinely mounting dental casts on articulators for orthodontic treatment, as there is no convincing evidence that it improves outcomes.
2) While articulators may help elucidate jaw relationships, using them routinely appears perfunctory given that factors like occlusion and condyle position are no longer considered primary causes of temporomandibular disorders.
3) The paradigm around temporomandibular disorders has shifted from a dental model to a biopsychosocial one, and orthodontics is now considered temporomandibular disorders neutral.
This study evaluated age and gender differences in condylar growth and glenoid fossa displacement in French Canadian children and adolescents over 4-year periods. The results showed that:
1) The mandibular condyle grew superiorly between 9.0-10.7 mm and posteriorly between 0.8-1.3 mm over 4 years, with boys exhibiting greater superior growth during adolescence compared to childhood.
2) The glenoid fossa was displaced posteriorly between 1.8-2.1 mm and inferiorly between 1.0-1.8 mm over 4 years, with greater posterior and inferior displacement during adolescence compared to childhood.
3) Both condyl
This document summarizes the shift in the conceptualization and treatment of temporomandibular disorders (TMD) from a dentally-based model to a medically-based model over the past 40 years. It describes early research at the University of Illinois that conducted controlled clinical trials testing single-modality treatments for TMD, including medications, physical therapies, oral appliances, TENS, and psychological therapies. The studies found high placebo response rates of 35-60% across treatments. Placebo treatments like sham prescriptions, placebo splints, and mock occlusal adjustments were also effective for many patients, demonstrating the strong psychological factors involved in TMD. The results challenged traditional dental concepts and treatment of TMD,
This document summarizes the historical perspectives and controversies surrounding the definition of centric relation (CR) in orthodontics. It discusses how the definition of CR has changed over time from referring to a retruded, posterior condyle position to a contemporary understanding of an anterior-superior position. The document also reviews past literature regarding the recording and validity of CR records as well as the relationship between condyle position and temporomandibular disorders. A key conclusion is that current scientific evidence does not support the benefit of using gnathologic CR records and articulators in orthodontic treatment as the positions of the temporomandibular joint condyles have not been shown to be predictive of temporomandibular
This study assessed the reproducibility of measurements made using the Condylar Position Indicator (CPI) by evaluating intra-operator and inter-operator variability. Three operators took CPI recordings of standardized acrylic models and stone models that were poured from impressions of the acrylic models. Results showed very low variability between operators in readings of the same recording strips. Intra-operator variability was also low for recordings made of both the acrylic and stone models. Variability was slightly higher for the stone models compared to the acrylic models, and transverse readings showed the least amount of variability compared to vertical and anterior-posterior readings. The findings suggest the CPI provides accurate and reproducible measurements with minimal technique-induced error.
The reproducibility of the Roth power centric bite registration technique for determining centric relation was investigated. Three operators performed the technique on 18 subjects to measure interoperator variability, with each operator performing it 3 times to measure intraoperator variability. Measurements of condylar position were recorded using a condylar position indicator and compared statistically. The results showed no statistically significant differences within or between operators, indicating the Roth power centric technique reproduces centric relation with a high degree of accuracy and reliability.
mandibular condyle position comparison of articulator mountings and magnetic ...Dr. Carlos Joel Sequeira.
This study evaluated the reliability of jaw positions using articulator mountings and MRI in 28 symptom-free subjects. The results showed:
1) Articulator analysis found CO and CR positions were statistically replicable between trials. CO was distinct from RE and CR, but RE and CR could not be distinguished.
2) MRI found half the subjects had condylar concentricity consistent across positions, while 13% had anteriorly displaced disks not influenced by condyle position.
3) Treating to CR was not supported as a way to improve disk-condyle relationships, as MRI did not find CR to be a unique or reproducible position distinct from other positions.
The document discusses the use of articulators in orthodontics. It is divided into three parts:
1) The first part explains that articulators are used as diagnostic tools to uncover occlusal problems, particularly those involving the vertical dimension, which are otherwise hidden.
2) The second part demonstrates the techniques needed to properly use the articulator system, such as taking bite registrations and transferring the terminal hinge axis position.
3) The third part illustrates how articulators can be used for diagnostic techniques after mounting the models, including measuring condylar positions and creating diagnostic setups.
This study compared the maximum intercuspation (MI) and centric relation (CR) harmony between three groups of post-orthodontic patients. Group 1 and 3 received gnathologically-based treatment using models, splints and instrumentation to assess MI and CR alignment. Group 2 received standard edgewise treatment without gnathological assessment. The study found statistically significant vertical condylar distraction in MI versus CR positioning in the non-gnathological group compared to the gnathological groups, suggesting gnathological treatment may better achieve functional MI-CR harmony.
TEST BANK For Community Health Nursing A Canadian Perspective, 5th Edition by...Donc Test
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Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
Adhd Medication Shortage Uk - trinexpharmacy.comreignlana06
The UK is currently facing a Adhd Medication Shortage Uk, which has left many patients and their families grappling with uncertainty and frustration. ADHD, or Attention Deficit Hyperactivity Disorder, is a chronic condition that requires consistent medication to manage effectively. This shortage has highlighted the critical role these medications play in the daily lives of those affected by ADHD. Contact : +1 (747) 209 – 3649 E-mail : sales@trinexpharmacy.com
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Does Over-Masturbation Contribute to Chronic Prostatitis.pptxwalterHu5
In some case, your chronic prostatitis may be related to over-masturbation. Generally, natural medicine Diuretic and Anti-inflammatory Pill can help mee get a cure.
- Video recording of this lecture in English language: https://youtu.be/kqbnxVAZs-0
- Video recording of this lecture in Arabic language: https://youtu.be/SINlygW1Mpc
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
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ABDOMINAL TRAUMA in pediatrics part one.drhasanrajab
Abdominal trauma in pediatrics refers to injuries or damage to the abdominal organs in children. It can occur due to various causes such as falls, motor vehicle accidents, sports-related injuries, and physical abuse. Children are more vulnerable to abdominal trauma due to their unique anatomical and physiological characteristics. Signs and symptoms include abdominal pain, tenderness, distension, vomiting, and signs of shock. Diagnosis involves physical examination, imaging studies, and laboratory tests. Management depends on the severity and may involve conservative treatment or surgical intervention. Prevention is crucial in reducing the incidence of abdominal trauma in children.
1. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
1
Keratinized Gingiva Height Increases After Alveolar Corticotomy and
Augmentation Bone Grafting
M. Thomas Wilcko, DDS*; Donald J. Ferguson, MSD†
; Laith Makki, MS‡
; William M. Wilcko,
MS§
* Case Western Reserve University, Department of Periodontology, Cleveland, OH; Private
Practice in Periodontology, Erie, PA, USA.
†
European University College, Advanced Orthodontics Program, Dubai, United Arab Emirates.
‡
European University College, Advanced Orthodontics Program, Dubai, United Arab Emirates.
§
University of Pennsylvania School of Dental Medicine, Department of Orthodontics,
Philadelphia, PA; Private Practice in Orthodontics, Erie, PA, USA.
Background: To compare the keratinized gingival tissue (KT) height labial to the mandibular incisors after
orthodontic treatment with and without alveolar corticotomy and bone grafting. Methods: Two orthodontically
treated groups of 35 patients each, with (Cort) and without (Conv) alveolar decortication and augmentation bone
grafting, were matched in this case controlled study for sample size, gender, mandibular premolar extractions,
pretreatment age, post treatment observation period and pretreatment KT height. Standardized digital frontal
occlusion photographs taken at pretreatment and at least one year after active orthodontic treatment, were adjusted to
96 dpi and measured with ImageJ software for vertical KT height labial to each mandibular incisor. Results: An
average of 1.5 years after completion of active orthodontic therapy, KT height had increased significantly 0.78 mm
(P=.000) in the Cort group and decreased 0.38 mm (P=.002) in Conv; a 1.28 mm KT height gain was demonstrated
in the subgroup representing the lowest half of Cort KT height at pretreatment. Mandibular incisor inclination and
prominence explained neither the decrease in keratinized gingiva height in Conv nor the KT height gain in Cort.
Conclusions: Orthodontic therapy combined with alveolar decortication and augmentation bone grafting resulted in
a significant increase in keratinized gingiva height. Although KT height surrounding the dentition has been devalued
by evidence-based studies, the value added protection of KT height increase after decortication and augmentation
bone grafting offsets the concerns of orthodontically proclining or expanding mandibular incisors facially.
KEY WORDS:
case-control studies, humans, orthodontics, keratinized gingiva, bone transplantation, alveolar process
The notion of what constitutes a healthy and robust periodontium prior to orthodontic tooth
movement has undergone substantial reconsideration over the past half century.1
It is as certain
today as in the past that pre-orthodontic periodontal health includes sulcus pocket depths that are
minimal with accessible intrasulcular cleansing, teeth free of hard accretions and plaque
controlled by satisfactory oral hygiene. But the arguments for an adequate height of keratinized
tissue or attached gingiva1
as well as a vigorous, thick periodontal biotype2
have changed
substantially over the past 50 years.
ADEQUACY OF ATTACHED GINGIVA
The concept that a certain apico-coronal dimension of gingiva is critical for the protection of the
periodontium proper has been refuted by evidence-based studies over the years. Prior to the mid-
1970s, a height (width or zone) of attached gingival of at least one millimeter was considered
necessary to maintain gingival health.3
But since the mid-1970s, the biological significance of a
sufficiently wide keratinized has been diminished by the following evidence-based studies:
2. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
2
Height of attached gingiva was deemed an insignificant, non-pathogenic factor in periodontal
health 4-7
if oral hygiene was satisfactory 8,9
or unsatisfactory 10,11
. The conclusion drawn was
that a certain quantity of gingiva is not essential for the maintenance of periodontal health or for
precluding a gingival recession. 12-15
ORTHODONTIC TOOTH MOVEMENT AND ATTACHED GINGIVA
Gingival and osseous architecture has been related to the orthodontic outcome. In a thin
scalloped biotype, plaque-associated inflammation may create a greater risk for gingival
recession apical to the cement-enamel junction16
, and proclining teeth, especially mandibular
incisors, may result in labial bone dehiscence accompanied by gingival recession 4,17
. Cautious,
judicious incisor proclination more often results in biotype thinning and greater crown
lengthening but not gingival recession.18-20
But thinness of gingiva in orthodontic patients was
found to be more relevant to gingival recession than final tooth inclination.15,21
At a fundamental level, periodontal pathogenesis is strongly related to the bacterial flora and
how an individual manages it in terms of both hygiene and immune.15,22
Individual patients have
varying susceptibility to loss of the attachment apparatus, and it is important for the orthodontist
to evaluate both periodontal soft tissue status and susceptibility to change when treatment is
planned.13,23,24
A patient with thin, friable tissue and little attached gingiva labial to the
mandibular incisors is at greater risk for gingival recession apical to the cement-enamel junction
(CEJ) especially if the tooth is moved facially.25
If facial tooth movement is accompanied by
inflammation due to plaque retention, there is even greater risk of recession. Orthodontists must
remain vigilant and acknowledge that gingival recession defect and dehiscence of the alveolar
bone may occur with orthodontic expansion when the periodontal biotype is thin scalloped,
especially when accompanied by plaque accumulation and inflammation.23
Altering the position of a tooth may bring about changes in the dimensions of the gingiva and
in the position of the soft tissue margin (clinical crown height), and some patients may respond
to labial movement of incisors with gingival recession and/or attachment loss. Concern has been
expressed in scholarly orthodontic literature about proclining or advancing incisors and recession
of the marginal soft tissue resulting in increased clinical crown height 26-28
, if the gingiva is thin21
and inflamed 29-31
, if keratinized gingiva is lacking 13,18,25
or if mandibular incisors are
excessively proclined 4
.Others have expressed little or no concerns about marginal soft tissue
gingiva status or health when mandibular incisor proclination or prominence is increased 13,20,32
in the absence of preexisting gingival recession defects 19
or if there is an adequate height of
keratinized tissue 18
.
ORTHODONTIC COMBINED WITH ALVEOLAR CORTICOTOMY AND
AUGMENTATION BONE GRAFTING
The unique combination of orthodontic therapy with selective alveolar corticotomy and
augmentation bone grafting* was introduced in 2001.33
This protocol was performed within one
week of active fixed orthodontic appliance placement. The bone graft is typically comprised of a
combination of demineralized freeze-dried bone allograft (DFDBA) and bovine bone xenograph
wetted with clindamycin phosphate antibiotic. Orthodontic adjustments are made every 2 weeks
instead of every 4 to 6 weeks in order to prevent alveolar osteopenia from dissipating (healing)
thereby facilitating rapid tooth movement.34
Alveolar decortication induces localized osteopenia
3. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
3
primarily affecting trabecular bone immediately adjacent to the injury resulting in
demineralization and accelerated tooth movement.35,36
Patients with periodontal or bone disease and/or severe epithelial attachment loss
accompanied by non-vital root surfaces are typically precluded from corticotomy and bone
grafting therapy. Although effective in eliminating dehiscence and fenestrations, the technique is
not a regenerative periodontal treatment but rather an empowerment tool for orthodontists that
permits expanding the scope of malocclusion treatment such as skeletal open bite or cross bite as
well as severe dental arch crowding without extractions.37
Moreover, augmentation bone
grafting increases alveolar cortex thickness which likely leads to greater long-term stability of
orthodontic outcomes.38,39
Alveolar corticotomy plus augmentation bone grafting is not offered as a patient service to
increase KT height but rather to expand the scope of malocclusions treatable by outpatient
orthodontics and to satisfy patient requests for reduced orthodontic treatment time. The
corticotomy facilitates accelerated tooth movement and the bone grafting likely leads to greater
stability of orthodontic treatment outcomes. Increased keratinized gingiva height following the
corticotomy and augmentation bone grafting therapy has been anecdotally observed but this topic
has never been studied or documented. The purpose of the study was to evaluate the keratinized
gingiva height labial to the mandibular incisors following orthodontics with and without
corticotomy and bone grafting. The null hypothesis tested was no difference in height of
keratinized gingiva labial to mandibular incisors in orthodontic patients treated with and without
a history of corticotomy and augmentation bone grafting.
MATERIALS & METHODS
The approval of the Institutional Review Board at European University College was obtained to
conduct this research project.
Sample:
The sample was comprised of 70 patients with healthy, intact periodontium without recession
defect treated with comprehensive orthodontic therapy. Primary target variable was height of
keratinized gingiva labial to mandibular central and lateral permanent incisors; a secondary focus
was on mandibular incisor position and relationship to keratinized tissue (KT) height.
Prior to treatment, all patients signed a written informed consent authorizing use of their
dental records to participate in a scientific investigation. Selection criteria for all patients in this
case control study included the following: 1) comprehensive orthodontic treatment in the
permanent dentition using fixed, straightwire orthodontic appliances .022” slot size with and
without premolar extractions, 2) post orthodontic treatment retainer wear with removable
thermoplastic and/or Hawley-type retainers, and 3) availability of intraoral frontal occlusion
photographs showing mandibular keratinized gingiva at pretreatment and at least one year
following active orthodontic therapy.
Subjects were excluded on the basis of any of the following criteria: 1) inability to measure
the labial keratinized tissue on the intraoral frontal photograph, 2) pretreatment open bite
malocclusion, 3) congenitally absent or orthodontically extracted mandibular incisor(s), 4)
diagnosis of any syndrome including cleft lip and palate, and 5) history of orthognathic surgery.
4. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
4
From the private practices of William M. and M. Thomas Wilcko, the records of all patients,
with no exception, treated with mandibular anterior alveolar corticotomy and augmentation
grafting therapy (Cort) were screened using the study selection criteria. Patients who had been
treated by conventional orthodontics (Conv) were then matched to the Cort sample for sample
size, gender, mandibular premolar extractions, pretreatment age, length of post treatment
observation period as well as pretreatment KT height. The Conv orthodontic patient records from
European University College archives were reviewed starting with most current available
extending back no more than two years and continued until matched groups were achieved.
Both samples were comprised of 35 individuals with 69% female and the Conv sample
represented one fewer lower premolar extraction patients. Length of post treatment observation
time for Conv was 15.9 months and 19.4 months for Cort (P>.05). Mean pretreatment KT
heights were no different (P>.05) between the Conv and Cort (3.24 vs 3.52 mm) groups. (Table
1) Minimal pretreatment KT heights recorded for Conv and Cort were 1.61 and 0.69 mm
respectfully.
Procedures
Surgery: Alveolar decortication and bone grafting was performed in Cort patients within one
week from the date of placement of the fixed orthodontic appliance. A sulcular releasing incision
was used and not releasing incisions made in the mucosal tissues apical to the zone of keratinized
gingiva. The full thickness mucoperiosteal flap reflection was extended 5 to 10 millimeters
beyond the apices of the roots. The bone activation was accomplished with circumscribing
corticotomy cuts and intramarrow penetration proximate to the area of desired tooth movement
using a high speed handpiece number 2 round bur with copious irrigation. Cortical bone
overlying the roots was intentionally injured if thick enough without threat to entering the
periodontal ligament space or injuring the root itself; interproximal cortical bone was scarred
with penetrations and/or circumscribing cuts. Following the placement of the particulate bone
grafting material over the activated bone, the flap was sutured in its original position with non-
resorbable/non-wicking suture material. The sutures were left in place for a minimum of 2 weeks
to prevent retraction apically and root exposure especially when pre-existing bony dehiscence
was present.34
(Figure 1)
Utilized for all patients were study casts and digital frontal occlusion photographs taken at
pretreatment and at least one year after active orthodontic therapy. All photographs were taken
with a 105 mm lens in a standardized manner with the camera lens nearly perpendicular to the
frontal occlusal plane. The resolution of all intraoral frontal occlusion photographs was adjusted
to 96 dots per inch (DPI). The single examiner (LM) was blinded during data measurements.
1. Maximum mesio-distal width of a maxillary central incisor was measured to the nearest
hundredth millimeter (0.01 mm) perpendicular to the incisor crown central vertical axis on the
study cast using a digital caliper (Mitutoyo Digimatic®, Mitutoyo (UK) Ltd, Telford, Shropshire,
UK).
2. With each frontal occlusal photograph adjusted to 96 DPI, the study cast caliper
measurement was then used to adjust for any magnification error of the photographs. The same
tooth measured on the study casts was measured on the photographs taken at pre-treatment and at
observation time post treatment by a single investigator using ImageJ software (a public domain,
Java-based image processing program developed at the National Institutes of Health). ImageJ
5. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
5
has been shown to be a reliable and valid photogrammetric method in general.40
In order to
obtain the adjusted (normalized) width of the keratinized gingival, a multiplication factor applied
which was a modification of the equation utilized by Coatoam et al.14
and was used by Trentini
et al.41
as follows:
( )
( )
Width of castincisor
Adjusted Keratinized tissueheight Keratinized tissueheight fromphoto
Width of photoincisor
= =
3. After calculating the amount of millimeters contained in each pixel, measurements were
made using ImageJ software on the pretreatment and post treatment photographs of the facial
keratinized tissue height from the muco-gingival junction to the free gingival margin; each
measurement was made in line with the central vertical axis of each of the four mandibular
central incisor crowns.
4. Pre-treatment and post treatment cephalometric radiographs were used to measure and
compare mandibular incisor inclination (mandibular central incisor axis to mandibular plane or
L1-MnPl) and protrusion (mandibular central incisor distance from nasion-to-pogonion line or
L1-NPo).
Data were collected and stored in Excel and later transformed for use with the Statistical
Package for Social Services (SPSS) software, version 15.0.1 for analysis. Descriptive statistics
were computed on KT height changes from the KT height scores. Intergroup differences were
compared using the independent t-test. Oneway ANOVA parametric testing with Tukey’s post
hoc test was performed to determine inter-group differences in KT height mean scores. The 0.05
probability level of significance was used for all testing purposes. Intra-operator reliability
testing was conducted by repeating keratinized tissue height measurements on five
individuals from each of the two subgroups weekly for five weeks. Paired t-tests revealed no
differences in the means and reliability was judged as satisfactory.
RESULTS
A comparison between the two matched treatment samples (Table 1), with selective alveolar
decortication and bone augmentation (Cort) and without (Conv), demonstrated a significantly
shorter active orthodontic treatment time for the Cort sample compared to the Conv (7.1 ±1.7 vs
22.1 ±6.8 months, P=.000) sample.
Heights of pretreatment keratinized tissue labial to the mandibular incisors were matched
between the two study samples and then compared at least one year following orthodontic
appliance removal to determine treatment effect. At 1.5 years post treatment, KT height
averaged significantly more for the Cort sample (4.3 ± 0.74 mm) when compared to the Conv
group (2.9 ± 0.98 mm, P<.000). Moreover, the post treatment KT height of all individual
mandibular incisors was significantly greater (P≤.003) in the Cort sample. (Table 2)
Mean KT height decreased significantly from pretreatment to 1.5 years post treatment for
Conv (-0.38 mm, P=.001) patients. In contrast, mean KT height increased significantly for the
Cort (0.78 mm, P<.000) patients. (Figure 2 and Table 3)
6. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
6
To further assess treatment effect on KT height change, Cort and Conv study groups were
each divided into two groups above and below the 50th
percentile level of mean pretreatment KT
height. Paired t-testing demonstrated that Conv group KT height decreased significantly (-0.51
mm, P=.006) during treatment when mean pretreatment KT height was above 50th
percentile but
not below 50th
percentile (-0.26 mm, P=.10). The Cort group KT height increased significantly
(1.28 mm, P=.000) during therapy when mean pretreatment KT height was below 50th
percentile,
but above 50th
percentile, mean KT height change post treatment was not statistically significant
(0.26 mm, P=.194). (not shown)
Mandibular incisors of the Cort group were significantly more retroclined than in the Conv
group at pre-treatment as measured by mandibular incisor axis to mandibular plane (94.3 vs 99.5,
P=.004). Moreover, the amount of pre- to post treatment change in mandibular incisor protrusion
in the Cort group was significantly greater than the control (1.2 vs 0.0, P=.043) group. (Table 4)
DISCUSSION
The main finding of this investigation was that keratinized tissue (KT) height increased
significantly after orthodontic treatment was combined with alveolar corticotomy and
augmentation bone grafting. KT height increased 0.78 mm (P<.000) in the Cort group an average
of 19.4 months following active orthodontic treatment; this magnitude of gain was not only
statistically significant but also clinically important. Moreover, the 1.28 mm of KT height
therapy gain demonstrated in the Cort sample with KT height lowest at pretreatment was
interesting in light of the fact that there was only a 0.26 mm average KT height gain in the Cort
sample with KT height highest at pretreatment. Hence, KT height gained the most following
alveolar decortication and grafting therapy when KT height was least at pretreatment.
Surgical wounding of the tooth bordering soft tissue influences the dimensions of the
gingiva.42
Healing of the periodontal wound is characterized by the formation of a granulation
tissue over which epithelial cells migrate from surrounding gingiva and/or alveolar mucosa.
Whether keratinization of the covering epithelium will occur is determined by the properties of
the connective tissue from which the granulation tissue originates. Granulation tissue derived not
only from the remaining or adjacent gingiva, but also from the periodontal membrane, will form
a tissue in the wounded area which in most respects, clinically as well as histologically, is similar
to that of a normal gingiva.43
The corticotomy and augmentation bone grafting procedure (Figure 1) is quite technique
sensitive relative to the increased KT height issue because only a full thickness mucoperiosteal
flap and particulate bone grafting material are involved. It is the sulcular releasing (not mucosal
releasing) incision that is key because it allows the stretching of the immature tissues at the re-
established epithelial attachment site on the root surface that apparently provides for the
increased height of the keratinized gingiva. Splitting of the original zone of keratinized gingiva
which permits the reflection of the apical portion of this keratinized gingiva with the flap while
leaving the coronal portion in place will not suffice. Increasing keratinized tissue by stretching
the full-thickness flap coronally is not a new concept42
, nor is the concept of a change in the
height of the free gingival portion caused by a change in bucco-lingual thickness of the gingiva15
.
But increased keratinized tissue at the gingival free margin secondary to tension on the suture
edges stretched over the bucco-lingual bulk of augmentation grafting material has not been
previously reported per se. The rather vascular immature tissues of this re-established epithelial
attachment have the ability to stretch as they continue to mature. Once the epithelial attachment
7. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
7
is re-established at it original position on the root surface, it is fairly resistant to apical migration.
But it must be emphasized that decortication and bone grafting therapy is not a regenerative
technique and that any increase in KT height occurs apical to the epithelial attachment.
Conventionally treated orthodontic patients demonstrated a statistically significant decrease
in KT height (-0.38 mm, P=.001) observed 15.9 months after fixed orthodontic appliances were
removed. A decrease in KT height of -0.38 mm is not clinically important and is consistent with
Coatoam et al. (1981) who reported in orthodontically treated patients a -0.25 mm average
decrease in KT height labial to mandibular incisors observed at immediate post treatment. In the
present study, differences in active orthodontic treatment time between Cort and Conv, (7.1 vs
22.1 months, P=.000) was not considered a confounding factor.
Mandibular incisor inclination and prominence may be confounding factors in keratinized
gingiva height change. But the Conv KT height does not appear to have been influenced by
either factor because there was no significant pre- to 1.5 years post treatment change (P>.05) in
either cephalometric variable. In the Cort group, mandibular incisors increased significantly in
inclination 2.7 degrees (P=.049) and protrusion 1.6 mm (P=.001) while KT height increased
significantly thereby having the opposite effect expected. The increased bucco-lingual alveolar
dimension from the augmentation bone grafting explains best the increased KT height.
Recession of the free gingival margin is another confounding variable in measuring KT
height change as Boke et al.26
found a positive correlation between mandibular incisor position
and gingival recession in patients treated with fixed appliances and extraction. In the current
investigation, clinical crown heights of mandibular incisors could not be measured from the
photographs.
Lastly, KT height increase in the Cort group may have been due to apical movement of the
mucogingival junction but apical migration is highly unlikely.44-46
In the present study, it would
appear that the most cogent explanation for mandibular anterior labial KT height increase in the
Cort group was stretching the full-thickness flap coronally over the bucco-lingual bulk of
augmentation grafting material. Even though the main purpose of alveolar corticotomy and bone
grafting is not to increase KT height, it would appear that the procedure results in this value-
added outcome.
CONCLUSIONS
Two matched groups of orthodontically treated patient-patients, with and without alveolar
decortication and augmentation bone grafting, were compared. The samples were matched for
sample size, gender, mandibular premolar extractions, pretreatment age, post treatment
observation period and baseline pretreatment KT height. A summary of the results pertaining to
the mandibular incisors is as follows:
1. Labial keratinized gingiva heights were increased an average of 0.78 mm (P=.000) in the
corticotomy group; a 1.28 mm KT height gain was demonstrated 19.4 months after orthodontic
appliance removal in the subgroup representing mean KT heights below the 50th
percentile at
pretreatment.
2. Keratinized gingiva heights deceased an average of 0.38 mm (P=.001) in the
conventionally treated group; a -0.51 mm KT height loss was found 15.9 months after
8. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
8
orthodontic appliance removal in the subgroup representing mean KT heights above the 50th
percentile at pretreatment.
3. Mandibular incisor inclination and prominence did not explain the decrease in keratinized
gingiva height in the conventionally treated group nor the KT height increase in the alveolar
corticotomy and augmentation bone grafting group.
Based upon the conditions of this study, it may be concluded that orthodontics combined
with alveolar decortication and augmentation bone grafting results in a significant increase in
keratinized tissue height thereby offsetting the concerns of orthodontically proclining or
expanding mandibular incisors facially.
CONFLICT OF INTEREST AND SOURCES OF FUNDING STATEMENT
Sources of Funding: There was no “Conflict of Interest” regarding funding. This retrospective case-controlled
study was self-funded by the authors and their institution.
Authors D. Ferguson and L. Makki claim no “Conflict of Interest” of any type related to the investigation entitled,
Keratinized gingiva height increases after alveolar corticotomy and augmentation bone grafting.
Authors W. Thomas Wilcko and William M. Wilcko have a conflicts of interest related to the investigation entitled,
Keratinized gingiva height increases after alveolar corticotomy and augmentation bone grafting; they hold a patent
related to Accelerated Osteogeneic Orthodontics and Periodontially Accelerated Osteogenic Orthodontics. COI
forms from website http://www.icmje.org/#conflicts are submitted by the two Wilcko co-authors.
REFERENCES
1. Zuhr O, Baumer D, Hurzeler M. The addition of soft tissue replacement grafts in plastic periodontal and implant
surgery: Critical elements in design and execution J Clin Periodontol 2014;41(Suppl. 15):S123–S142.
2. Zweers J, Thomas RZ, Slot DE, Weisgold AS, Van der Weijden GA. Characteristics of periodontal biotype, its
dimensions, associations and prevalence: a systematic review. J Clin Periodontol 2014;41(10):958-971.
3. Wennstrom JL, Lindhe J, Nyman S. The role of keratinized gingiva for gingival health. J Clin Periodontol
1981;8(4):311-328.
4. Artun J, Krogstad O. Periodontal status of mandibular incisors following excessive proclination. Am J Orthod
Dentofacial Orthop 1987;91(3);225-232.
5. Geiger AM. Mucogingival problems and the movement of mandibular incisors: A clinical review. Am J Orthod
1980;78(5);511-527.
6. Salkin LM, Freedman AL, Stein MD, Bassioun MA. A longitudinal study of untreated mucogingival defects. J
Periodontol 1987;58(3):164-166.
7. Schoo WH, van der Velden U. Marginal soft tissue recessions with and without attached gingiva. A five year
longitudinal study. J Periodontal Res 1985;20(2):209-211.
8. Dorfman HS, Kennedy JE, Bird WC. Longitudinal evaluation of free autogenous gingival grafts. J Clin
Periodontol 1980;7(4):316-324
9. Dorfman HS, Kennedy JE, Bird WC. Longitudinal evaluation of free autogenous gingival grafts. A four year
report. J Periodontol 1982;53(6):349-352.
10. Miyasato M, Crigger M, Egelberg J. Gingival condition in areas of minimal and appreciable width of keratinized
gingiva. J Clin Periodontol 1977;4(3):200-209.
11. Wennstrom JL, Lindhe J, Nyman, S. The role of keratinized gingiva in plaque associated gingivitis in dogs. J
Clin Periodontol 1982;9(1):75-85.
12. Busschop JL, Van Vlierberghe M, De Boever J, Dermaut L. The width of the attached gingiva during
orthodontic treatment: a clinical study in human patients. Am J Orthod 1985;87(3):224-229.
9. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
9
13. Coatoam GW, Behrents RG, Bissada NF. The width of keratinized gingiva during orthodontic treatment: Its
significance and impact on periodontal status. J Periodontol 1981;52(6):307-313.
14. Wennstrom JL. Lack of association between width of attached gingiva and development of gingival recessions.
A 5-year longitudinal study. J Clin Periodontol 1987;14(3):181-184.
15. Wennstrom JL. Mucogingival considerations in orthodontic treatment. Semin Orthod 1996;2(1):46-54.
16. Olsson M and Lindhe J: Periodontal characteristics in individuals with varying form of the upper central
incisors. J Clin Periodontol 1991;18(1):78-82.
17. Choi YJ, Chung CJ, Kim K-H. Periodontal consequences of mandibular incisor proclination during presurgical
orthodontic treatment in Class III malocclusion patients. Angle Orthod 2015; 85(3):427-433.
18. Djeu G, Haye, C, Zawaideh S. Correlation between mandibular central incisor proclination and gingival
recession during fixed appliance therapy. Angle Orthod 2002;72(3):238-45.
19. Melsen B, Allais D. Factors of importance for the development of dehiscences during labial movement of
mandibular incisors: A retrospective study of adult orthodontic patients. Am J Orthod Dentofacial Orthop
2005;127(5):552-561.
20. Ruf S, Hansen K, Pancherz H. Does orthodontic proclination of lower incisors in children and adolescents cause
gingival recession? Am J Orthod Dentofacial Orthop 1998;114(1):100-106.
21. Yared KFG, Zenobio EG, Pacheco W. Periodontal status of mandibular central incisors after orthodontic
proclination in adults. Am J Orthod Dentofacial Orthop 2006;130(1):6.e1-6.e8.
22. Vanarsdall RL. Periodontal-orthodontic interrelationships. In Graber L.W., Vanarsdall R.L., Vig K.W.L. eds.
Orthodontics: Current principles and techniques. 5th
edition, St. Louis: Mosby: 2012: 807-841.
23. Ackerman JL, Proffit WR. Soft tissue limitations in orthodontics: Treatment planning guidelines. Angle Orthod
1997;67(5):327-336.
24. Muller HP, Kononen E. Variance components of gingival thickness. J Periodontal Res 2005;40(3):239-244.
25. Dorfman HS. Mucogingival changes resulting from mandibular incisor tooth movement. Am J Orthod
1978;74(3):286-97.
26. Boke F, Gaziolu C, Akkaya S, Akkaya M. Relationship between orthodontic treatment and gingival health: A
retrospective study. Eur J Dent 2014;8(3):373-380.
27. Joss-Vassalli I, Grebenstein C, Topouzlis N, Sculean A; Katsaros C. Orthodontic therapy and gingival recession:
A systematic review. Orthod Craniofac Res 2010;13(3):127–141.
28. Steiner GG, Pearson JK, Ainamo J. Changes of the marginal periodontium as a result of labial tooth movement
in monkeys. J Periodontol 1981;52(6):314-320.
29. Allais D, Melsen B. Does labial movement of lower incisors influence the level of the gingival margin? A case-
control study of adult orthodontic patients. Eur J Orthod 2003;25(4):343–352.
30. Pini-Prato G, Mancini EA, Papini O, Crescini A. Mucogingival approaches in young orthodontic patients:
Combined strategies for success. Semin Orthod 2014;20(3):150-169.
31. Trosello VK, Gianelly AA. Orthodontic treatment and periodontal status. J Periodontol 1979;50(12):665-671.
32. Artun J, Grobéty D. Periodontal status of mandibular incisors after pronounced orthodontic advancement during
adolescence: A follow-up evaluation. Am J Orthod Dentofacial Orthop 2001;119(1):2-10.
33. Wilcko WM, Wilcko MT, Bouquot JE, Ferguson DJ. Rapid orthodontics with alveolar reshaping: two case
reports of decrowding. Int J Periodontics Restorative Dent 2001;21(1):9-19.
34. Wilcko MT, Wilcko WM, Pulver JJ, Bissada NF, Bouquot JE. Accelerated osteogenic orthodontics technique: A
1-stage surgically facilitated rapid orthodontic technique with alveolar augmentation. J Oral Maxillofac Surg
2009;67(10):2149-2159.
10. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
10
35. Iino S, Sakoda S, Ito G, Nishimori T, Ikeda T, Miyawakif S. Acceleration of orthodontic tooth movement by
alveolar corticotomy in the dog. Am J Orthod Dentofacial Orthop 2007;131(4):448.e1-448.e8.
36. Sebaoun JD, Turner JW, Kantarci A, Turner JW, Carvalho RS, Van Dyke TE, Ferguson DJ. Modeling of
trabecular bone and lamina dura following selective alveolar decortication in rats. J Periodontol
2008;79(9):1679-1688.
37. Wilcko MT, Wilcko WM, Marquez MG, Ferguson DJ. The contribution of periodontics to orthodontic therapy.
In: Practical advanced periodontal surgery, Dibart S, editor, Blackwell Publishing, Inc., Ames, Iowa, USA.
2007:23-31.44. Ainamo A. Influence of age on the location of the maxillary mucogingival junction. J
Periodontal Res 1978;13(3):189-193.
38. Ferguson DJ, Makki L, Stapelberg R, Wilcko TM, Wilcko WM. Stability of the mandibular dental arch
following periodontally accelerated osteogenic orthodontics therapy: Preliminary studies. Semin Orthod
2014;20(3):239-246.
39. Ahead of print. Makki L, Ferguson DJ, Wilcko MT, et al. Mandibular irregularity index stability following
alveolar corticotomy and grafting: A 10 year preliminary study. (published online ahead of print December 4,
2014). Angle Orthod:doi:10.2319/061714-439.1.
40. Kerner S, Etienne D. Root coverage assessment: Validity and reproducibility of an image analysis system. J Clin
Periodontol 2007;34(11):969–976.
41. Trentini CM, Moriarty JD, Phillips C, Tullock FJC. Evaluation of the use of orthodontic records to measure the
width of keratinized tissue. J Periodontol 1995;66(6):438-442.
42. Wennstrom JL. Regeneration of gingiva following surgical excision. A clinical study. J Clin Periodontol
1983;10(3):287-297.
43. Karring T, Cumming BR, Oliver RC, Löe H. The origin of granulation tissue and its impact on postoperative
results of mucogingival surgery. J Periodontol 1975;46(10):577-585.
44. Ainamo A. Influence of age on the location of the maxillary mucogingival junction. J Periodontal Res
1978;13(3):189-193.
45. Gurgan CA, Oruc AM, Akkaya M. Alterations in location of the mucogingival junction 5 years after coronally
repositioned flap surgery. J Periodontol 2004;75(6):893-901.
46. Saber FS. Evaluation of alteration in mucogingival line location following use of subepithelial connective tissue
graft. Indian J Dent Res 2010;21(2):174-178.
Corresponding Author: (permission granted to publish), Donald J. Ferguson, DMD, MSD,
European University College, Dubai Healthcare City, Bldg 27, Block D, Office 302, PO Box
53382, Dubai, United Arab Emirates, E-mail: fergusonloud@gmail.com
Submitted February 02, 2015; accepted for publication June 07, 2015.
Figure 1:
Pre-treatment (1A), flap reflection and bone activation (1B), bone grafting material placement (1C), suturing (1D),
day of debracketing (1E), and two years post debracketing ((1F). Note the cortical bone dehiscence in 1B and the
increase in KT height in 1F.
Figure 2:
Keratinized tissue height labial to mandibular incisors was measured using ImageJ software from normalized (note
bracket sizes) photographs. In the Cort sample (A1 to A2), KT height increased 0.78 mm from pretreatment to 19.9
months after active orthodontic treatment; in the Conv sample (B1 to B2), KT height decreased 0.38 mm from
pretreatment to 15.9 months after completion of active orthodontic treatment.
11. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
11
Table I:
Description of study samples including, code, sample size, gender, extraction of mandibular premolars, mean
age at pre-treatment, mean active orthodontic treatment time, and mean post treatment time and
pretreatment KT height labial to mandibular incisors. M=male, F=female; L = mandibular or lower.
Sample Description
Cod
e
Si Gender
L Premolar
Extraction
Pre-Tx
Age
(years)
Post Tx
(months)
Pre-Tx KT
Ht
(millimeters
)
M F No
Ye
s
Conventional orthodontics
removable retainers
Con
v
35 11 24 30 5 30.1 ±11.4 15.9 ±13.6 3.24 ±0.8
Corticotomy + grafting + ortho
removable retainers
Cort 35 11 24 29 6 29.7 ±13.1 19.4 ±12.9 3.52 ±0.9
Table 2:
Descriptive data and independent t-test results comparing KT heights labial to each mandibular incisor for
Conv and Cort groups at pretreatment and at least one year after active orthodontic treatment. Note that
variables were not different at pretreatment and mean KT height was greater (P≤ .003) at post treatment for
all Cort mandibular incisor locations and 1.44 mm greater (P≤ .000) for Cort mean KT height.
Pretreatment KT height Post treatment KT height
Mandibular
incisors
Conv (n=35) Cort (n=35) Conv (n=35) Cort (n=35)
mean SD mean SD P
sig
mean SD mean SD P
sig
(millimeters) (millimeters) (millimeters) (millimeters)
Right lateral 3.46 1.14 3.69 1.30 .446 3.01 1.15 4.47 0.84 .003
Right central 3.32 0.91 3.40 1.08 .743 2.86 0.98 4.33 0.96 .000
Left central 2.91 0.81 3.27 0.94 .088 2.65 0.94 4.16 0.92 .000
Left lateral 3.24 0.91 3.73 1.14 .061 2.84 1.11 4.26 0.91 .000
mean KT height 3.24 0.82 3.52 0.92 .178 2.86 0.98 4.30 0.74 .000
Table 3:
Paired t-test results comparing keratinized tissue heights within each group at pretreatment and post
orthodontic treatment observation times. Note that Cort KT height increased significantly at all labial
mandibular incisor locations and that all labial mandibular incisor KT heights significantly decreased in the
Conv subgroup except for left central.
Change in keratinized tissue height
Mandibular
incisors
Conv (n=35) Cort (n=35)
15.9 months post tx 19.4 months post tx
mean dif t value P
sig
mean dif t value P sig
Right lateral -0.37 -2.74 .010 0.78 3.95 .000
Right central -0.46 -3.25 .003 0.93 4.46 .000
Left central -0.27 -1.96 .058 0.89 4.26 .000
Left lateral -0.42 -3.11 .004 0.53 2.46 .019
mean KT height -0.38 -3.46 .001 0.78 4.75 .000
12. Journal of Periodontology; Copyright 2015 DOI: 10.1902/jop.2015.150074
12
Table 4:
Independent t-test results comparing mandibular central incisor inclination (L1-MnPl) in degrees and
protrusion (L1-NPo) in millimeters at pretreatment and at the post orthodontic treatment as well as amount
of change in pre- to post treatment inclination and protrusion. Note that Cort group mandibular central
incisor inclination was significantly more retroclined at pre-treatment and demonstrated greater protrusion
change during therapy.
Pretreatment KT height Post treatment KT height
Cephalometric
measurements
Conv (n=35) Cort (n=35) Conv (n=35) Cort (n=35)
mean SD mean SD P sig mean SD mean SD P
sig
Inclination (L1-
MnPl)
99.5 7.5 94.3 7.0 .004 100.3 9.5 96.9 7.6 NS
Protrusion (L1-NPo) 5.0 2.9 3.8 3.4 NS 5.0 2.7 5.0 3.3 NS
Pre- to post treatment change
Inclination change 0.8 6.7 2.7 7.7 NS
Protrusion change 0.0 2.5 1.2 2.0 .043
* footnote: Periodontally Accelerated Osteogenic Orthodontics or PAOO