The document discusses root resection as a treatment option for periodontally weakened teeth. It describes various root resection techniques for different tooth types and locations. It provides guidelines for tooth preparations and crown configurations after root resection. It also discusses indications and contraindications for root resection. Several studies reporting long-term success rates of 90-93% for root-resected teeth over 10-30 years are mentioned. Root resection can help maintain teeth as long as patients maintain good oral hygiene.
Failures in Fixed Partial Denture
(Prosthodontics FPD- Dental science)
Various types of failures in the fabrication of fixed partial denture
Dr.Sachin Sunny Otta
St.Gregorios Dental College,Kothamangalam,Ernakulam
This document provides an overview of Gothic arch tracing techniques used to record centric relation. It defines key terms and discusses the history and evolution of graphic recording methods from early needle point tracings to modern extraoral and intraoral tracers that produce Gothic arch tracings. The conventional extraoral technique is described in 12 steps, from mounting the tracers to making centric and protrusive plaster records. Intraoral tracings are noted to be smaller and harder to observe during tracing compared to extraoral methods.
An impression is required to fabricate a fixed dental prosthesis. It must include the prepared teeth as well as surrounding structures. Various impression materials and techniques have been developed over time. Today, alginate, polyether, addition silicone and polyvinyl siloxane are commonly used. Proper tray selection and customization is important to obtain an accurate impression. Impression making requires isolation, tissue retraction and meticulous technique to ensure detail and avoid imperfections.
This document discusses pontic design in fixed partial dentures. It begins with definitions of a pontic and outlines key considerations for pontic design including pretreatment assessment of the pontic space and residual ridge contour, classification of pontics, and biologic, mechanical and esthetic factors. Optimal pontic design aims to provide an esthetic appearance while enabling adequate oral hygiene and preventing tissue irritation. Pontic selection depends on factors like location and materials used. The document discusses various pontic designs like sanitary, modified sanitary, saddle/ridge lap and ovate pontics and their appropriate uses. Biologic considerations for pontic design include maintaining pressure-free contact to prevent inflammation.
This document discusses various methods for remounting dentures, including direct correction in the mouth, laboratory remounting, and clinical remounting. Laboratory remounting involves fabricating remount casts of the dentures and mounting them on an articulator to eliminate deflective contacts through selective grinding. Clinical remounting techniques include split cast mounting, which involves constructing the maxillary cast in two parts to allow for easy removal and replacement of the casts. The modified split cast technique is also described as a timesaving clinical remount method. Remounting aims to improve denture occlusion and patient comfort by correcting errors that occurred during the fabrication process.
I will discuss various reference points for face bow.....
Thanks for watching......
If you like to watch my youtube channel..
please click for my channel....... Dr Aaryas Vlogs
https://youtu.be/myAENzQlHjE
This document discusses resin bonded fixed partial dentures (RBFPDs). It defines RBFPDs as prostheses that are luted to tooth structure using composite resin. Various types are described, including cantilever, fixed-fixed, and hybrid bridges. Advantages include reduced cost and minimal tooth preparation. Indications are for replacing single missing teeth with caries-free abutments. A case example describes using an RBFPD to replace a missing mandibular incisor and splint mobile abutment teeth.
Diagnosis and treatment planning in FPD with related articlesNAMITHA ANAND
The document provides guidelines for diagnosing and treatment planning in fixed prosthodontics. It discusses the importance of a thorough history, medical/dental history, and intraoral examination to accurately diagnose a patient's condition. The intraoral exam involves assessing soft tissues, periodontal health using probing depths, tooth mobility, occlusal relationships, and radiographs. Gathering comprehensive diagnostic information allows for formulating an appropriate treatment plan based on the patient's needs.
Failures in Fixed Partial Denture
(Prosthodontics FPD- Dental science)
Various types of failures in the fabrication of fixed partial denture
Dr.Sachin Sunny Otta
St.Gregorios Dental College,Kothamangalam,Ernakulam
This document provides an overview of Gothic arch tracing techniques used to record centric relation. It defines key terms and discusses the history and evolution of graphic recording methods from early needle point tracings to modern extraoral and intraoral tracers that produce Gothic arch tracings. The conventional extraoral technique is described in 12 steps, from mounting the tracers to making centric and protrusive plaster records. Intraoral tracings are noted to be smaller and harder to observe during tracing compared to extraoral methods.
An impression is required to fabricate a fixed dental prosthesis. It must include the prepared teeth as well as surrounding structures. Various impression materials and techniques have been developed over time. Today, alginate, polyether, addition silicone and polyvinyl siloxane are commonly used. Proper tray selection and customization is important to obtain an accurate impression. Impression making requires isolation, tissue retraction and meticulous technique to ensure detail and avoid imperfections.
This document discusses pontic design in fixed partial dentures. It begins with definitions of a pontic and outlines key considerations for pontic design including pretreatment assessment of the pontic space and residual ridge contour, classification of pontics, and biologic, mechanical and esthetic factors. Optimal pontic design aims to provide an esthetic appearance while enabling adequate oral hygiene and preventing tissue irritation. Pontic selection depends on factors like location and materials used. The document discusses various pontic designs like sanitary, modified sanitary, saddle/ridge lap and ovate pontics and their appropriate uses. Biologic considerations for pontic design include maintaining pressure-free contact to prevent inflammation.
This document discusses various methods for remounting dentures, including direct correction in the mouth, laboratory remounting, and clinical remounting. Laboratory remounting involves fabricating remount casts of the dentures and mounting them on an articulator to eliminate deflective contacts through selective grinding. Clinical remounting techniques include split cast mounting, which involves constructing the maxillary cast in two parts to allow for easy removal and replacement of the casts. The modified split cast technique is also described as a timesaving clinical remount method. Remounting aims to improve denture occlusion and patient comfort by correcting errors that occurred during the fabrication process.
I will discuss various reference points for face bow.....
Thanks for watching......
If you like to watch my youtube channel..
please click for my channel....... Dr Aaryas Vlogs
https://youtu.be/myAENzQlHjE
This document discusses resin bonded fixed partial dentures (RBFPDs). It defines RBFPDs as prostheses that are luted to tooth structure using composite resin. Various types are described, including cantilever, fixed-fixed, and hybrid bridges. Advantages include reduced cost and minimal tooth preparation. Indications are for replacing single missing teeth with caries-free abutments. A case example describes using an RBFPD to replace a missing mandibular incisor and splint mobile abutment teeth.
Diagnosis and treatment planning in FPD with related articlesNAMITHA ANAND
The document provides guidelines for diagnosing and treatment planning in fixed prosthodontics. It discusses the importance of a thorough history, medical/dental history, and intraoral examination to accurately diagnose a patient's condition. The intraoral exam involves assessing soft tissues, periodontal health using probing depths, tooth mobility, occlusal relationships, and radiographs. Gathering comprehensive diagnostic information allows for formulating an appropriate treatment plan based on the patient's needs.
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 document discusses post-insertion complaints with complete dentures. It begins by classifying common and uncommon complaints, such as sore spots, loose fit, speech issues, and more. It then discusses the management of these complaints, including examining denture faults, occlusal discrepancies, retention issues, and other potential causes. The document provides an overview of evaluating and addressing patients' post-insertion complaints to improve the function and comfort of their complete dentures.
BASIC PRINCIPLES AND FUNDAMENTALS OF CAST PARTIAL DENTURE DESIGNINGAamir Godil
Principles of cast partial denture design
Philosophy of design
Basic guidelines for designing
Kennedy's Class I-IV designs
Indications of specific components in designing cast partial denture
Distal extension CPD
Clinical cases
Exam oriented questions
The document discusses facebows, which are dental devices used to relate the maxillary arch to the hinge axis of opening and closing. A mandibular facebow can locate the exact hinge axis by using condylar rods to determine the axis of rotation. A maxillary facebow relates the maxilla to this axis and transfers it to the articulator to allow for accurate mounting. It describes how facebows help duplicate opening/closing arcs and lateral jaw movements. Common landmarks and methods for arbitrary and exact hinge axis determination are also outlined.
This document provides an overview of achieving esthetics in complete dentures. It discusses the definition and history of denture esthetics. The fundamentals of esthetics including visual perception, composition, proportion, dominance and illusion are covered. Methods for achieving complete denture esthetics are described, including accurate impressions, jaw relation, selection of anterior teeth, arrangement of teeth, and characterization of the denture base. Dynesthetic interpretation of dentogenic concepts and laboratory steps are also summarized.
This document discusses space maintainers, which are appliances used to maintain space for permanent teeth after premature loss of primary teeth. It describes different types of space maintainers including removable, fixed, lingual arch, and distal shoe appliances. Key factors in planning space maintenance like dental age and sequence of eruption are outlined. The document summarizes indications, contraindications, advantages and disadvantages of various space maintainer designs. Space maintainers aim to guide proper eruption of permanent teeth into ideal alignment and occlusion.
This document provides an overview of cast partial denture design. It discusses the steps in planning a cast partial denture, components such as direct and indirect retainers, rests, connectors, and Kennedy's classification system. Design considerations are presented for different Kennedy classes for both maxillary and mandibular cast partial dentures, including the use of straps, bars, clasps and rests. The key differences between tooth-supported and tooth-tissue supported cast partial dentures are also summarized.
Vertical jaw relation in Complete Dentures- KellyKelly Norton
1) The vertical jaw relation refers to the distance between selected points on the face, usually the tip of the nose and chin, and aims to determine the optimal vertical dimension of occlusion for complete dentures.
2) There are several proposed theories for the physiologic rest position, including positions where the opening and closing muscles are in equilibrium or where elastic elements balance gravity, but no single method is universally valid.
3) Determining the vertical dimension at rest provides a reference point, being approximately 2-4mm less than the vertical dimension of occlusion, which is the distance between contact points with the teeth occluding.
This document discusses combination syndrome, which occurs when a complete maxillary denture is opposed by a mandibular removable partial denture. This can lead to bone loss in the maxilla, enlargement of the mandibular tuberosities, and poor denture stability. Implant-supported prostheses and paying careful attention to occlusion design and retention are recommended to prevent these issues.
This document discusses the preparation of abutment teeth for removable partial dentures. It covers preparing guiding planes, modifying height of contour, creating retentive undercuts, and preparing rest seats. Guiding planes are prepared to direct the path of insertion for the denture. Height of contour is modified to allow ideal placement of clasps and connectors. Undercuts can be created through enamelplasty. Rest seats are prepared using round burs to provide support and force distribution for rests on the denture. Proper preparation of abutment teeth helps ensure retention, stability, and support of the removable partial denture.
The document discusses the biology of tooth movement during orthodontic treatment. It covers the periodontium, periodontal ligament, mechanisms of orthodontic tooth movement, and tissue reaction to tooth movement, including physiologic tooth movement and orthodontic tooth movement. Orthodontic tooth movement causes dentoalveolar tissue reactions on the pressure and tension sides, and can result in hyalinization if heavy forces are applied.
The document discusses the classification and design principles of obturators for partially edentulous patients. It presents a 6-class classification system for maxillary defects based on the location and extent of the resection. The classes range from a midline defect (Class I) to a bilateral posterior defect (Class V). Design principles are provided for each class, focusing on support, retention, and stabilization. Support is primarily through rests on abutment teeth and palatal tissues. Retention uses direct and indirect retainers on abutment teeth. Stabilization incorporates guide planes and tripodal/quadrilateral designs when possible. The goal is to distribute forces optimally and minimize movement of the prosthesis.
The document discusses face bows, which are used to record the spatial relationship between the maxilla and temporomandibular joints. This allows for accurate transfer of jaw relations to an articulator. The document covers the history and evolution of face bows, from early prototypes to modern designs. It describes the parts of face bows including the U-shaped frame, condylar rods/earpieces, bite fork, and locking/reference points. Different types are classified including arbitrary, fascia, and earpiece models. The uses, advantages, and limitations of various designs are also outlined.
The document discusses pontic design for fixed dental prostheses. It covers pretreatment assessment of residual ridge contours, classifications of ridge deformities, surgical modification techniques, and ideal requirements for pontics. Pontic designs are classified based on their shape and materials. Factors in pontic selection include esthetics and oral hygiene. Common designs for anterior and posterior regions are described, including sanitary, ovate, and saddle pontics. Biological considerations for pontic design involve maintaining the residual ridge, abutment teeth, and supporting tissues.
This document discusses the posterior palatal seal, including its definition, function, anatomical considerations, techniques for recording it, and potential errors. The key points are:
1. The posterior palatal seal provides retention, stability, and prevention of air leakage for maxillary dentures.
2. It is located along the junction of the hard and soft palate and extends from the pterygoid hamulus on either side.
3. Special techniques like using indelible pencil and having the patient say "AH" are used to identify and record the seal area during impression making.
04- Occlusion in prosthodontics- Concepts of occlusion.pptAmal Kaddah
This document discusses concepts of occlusion for complete dentures. It describes the importance of balanced occlusion and outlines numerous philosophies that have been proposed over time for arranging artificial tooth occlusion, including theories from Gysi, Hanau, Pleasure, and Boucher. While no single superior approach has been proven, a balanced articulation that considers factors like condylar guidance, incisal guidance, and cuspal angle appears most appropriate for satisfying patient needs regarding comfort, function, and aesthetics.
a detailed account of the principles of tooth preparation with main reference from Shillingburg
The presentation is available on request. Mail me at apurvathampi@gmail.com
This presentation includes brief history, classification and definition of overdentures and explains in details about the various tooth supported overdentures. It explains about bar attachments, ball attachments, telecsopic dentures etc.
The partial coverage restoration is a conservative restoration that requires less destruction of tooth structure than does a full coverage crown.
Its use is based on the premise that an intact surface of tooth structure should not be covered by a crown if its inclusion is not essential to the retention, strength, or esthetic result of the definitive restoration.
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 document discusses post-insertion complaints with complete dentures. It begins by classifying common and uncommon complaints, such as sore spots, loose fit, speech issues, and more. It then discusses the management of these complaints, including examining denture faults, occlusal discrepancies, retention issues, and other potential causes. The document provides an overview of evaluating and addressing patients' post-insertion complaints to improve the function and comfort of their complete dentures.
BASIC PRINCIPLES AND FUNDAMENTALS OF CAST PARTIAL DENTURE DESIGNINGAamir Godil
Principles of cast partial denture design
Philosophy of design
Basic guidelines for designing
Kennedy's Class I-IV designs
Indications of specific components in designing cast partial denture
Distal extension CPD
Clinical cases
Exam oriented questions
The document discusses facebows, which are dental devices used to relate the maxillary arch to the hinge axis of opening and closing. A mandibular facebow can locate the exact hinge axis by using condylar rods to determine the axis of rotation. A maxillary facebow relates the maxilla to this axis and transfers it to the articulator to allow for accurate mounting. It describes how facebows help duplicate opening/closing arcs and lateral jaw movements. Common landmarks and methods for arbitrary and exact hinge axis determination are also outlined.
This document provides an overview of achieving esthetics in complete dentures. It discusses the definition and history of denture esthetics. The fundamentals of esthetics including visual perception, composition, proportion, dominance and illusion are covered. Methods for achieving complete denture esthetics are described, including accurate impressions, jaw relation, selection of anterior teeth, arrangement of teeth, and characterization of the denture base. Dynesthetic interpretation of dentogenic concepts and laboratory steps are also summarized.
This document discusses space maintainers, which are appliances used to maintain space for permanent teeth after premature loss of primary teeth. It describes different types of space maintainers including removable, fixed, lingual arch, and distal shoe appliances. Key factors in planning space maintenance like dental age and sequence of eruption are outlined. The document summarizes indications, contraindications, advantages and disadvantages of various space maintainer designs. Space maintainers aim to guide proper eruption of permanent teeth into ideal alignment and occlusion.
This document provides an overview of cast partial denture design. It discusses the steps in planning a cast partial denture, components such as direct and indirect retainers, rests, connectors, and Kennedy's classification system. Design considerations are presented for different Kennedy classes for both maxillary and mandibular cast partial dentures, including the use of straps, bars, clasps and rests. The key differences between tooth-supported and tooth-tissue supported cast partial dentures are also summarized.
Vertical jaw relation in Complete Dentures- KellyKelly Norton
1) The vertical jaw relation refers to the distance between selected points on the face, usually the tip of the nose and chin, and aims to determine the optimal vertical dimension of occlusion for complete dentures.
2) There are several proposed theories for the physiologic rest position, including positions where the opening and closing muscles are in equilibrium or where elastic elements balance gravity, but no single method is universally valid.
3) Determining the vertical dimension at rest provides a reference point, being approximately 2-4mm less than the vertical dimension of occlusion, which is the distance between contact points with the teeth occluding.
This document discusses combination syndrome, which occurs when a complete maxillary denture is opposed by a mandibular removable partial denture. This can lead to bone loss in the maxilla, enlargement of the mandibular tuberosities, and poor denture stability. Implant-supported prostheses and paying careful attention to occlusion design and retention are recommended to prevent these issues.
This document discusses the preparation of abutment teeth for removable partial dentures. It covers preparing guiding planes, modifying height of contour, creating retentive undercuts, and preparing rest seats. Guiding planes are prepared to direct the path of insertion for the denture. Height of contour is modified to allow ideal placement of clasps and connectors. Undercuts can be created through enamelplasty. Rest seats are prepared using round burs to provide support and force distribution for rests on the denture. Proper preparation of abutment teeth helps ensure retention, stability, and support of the removable partial denture.
The document discusses the biology of tooth movement during orthodontic treatment. It covers the periodontium, periodontal ligament, mechanisms of orthodontic tooth movement, and tissue reaction to tooth movement, including physiologic tooth movement and orthodontic tooth movement. Orthodontic tooth movement causes dentoalveolar tissue reactions on the pressure and tension sides, and can result in hyalinization if heavy forces are applied.
The document discusses the classification and design principles of obturators for partially edentulous patients. It presents a 6-class classification system for maxillary defects based on the location and extent of the resection. The classes range from a midline defect (Class I) to a bilateral posterior defect (Class V). Design principles are provided for each class, focusing on support, retention, and stabilization. Support is primarily through rests on abutment teeth and palatal tissues. Retention uses direct and indirect retainers on abutment teeth. Stabilization incorporates guide planes and tripodal/quadrilateral designs when possible. The goal is to distribute forces optimally and minimize movement of the prosthesis.
The document discusses face bows, which are used to record the spatial relationship between the maxilla and temporomandibular joints. This allows for accurate transfer of jaw relations to an articulator. The document covers the history and evolution of face bows, from early prototypes to modern designs. It describes the parts of face bows including the U-shaped frame, condylar rods/earpieces, bite fork, and locking/reference points. Different types are classified including arbitrary, fascia, and earpiece models. The uses, advantages, and limitations of various designs are also outlined.
The document discusses pontic design for fixed dental prostheses. It covers pretreatment assessment of residual ridge contours, classifications of ridge deformities, surgical modification techniques, and ideal requirements for pontics. Pontic designs are classified based on their shape and materials. Factors in pontic selection include esthetics and oral hygiene. Common designs for anterior and posterior regions are described, including sanitary, ovate, and saddle pontics. Biological considerations for pontic design involve maintaining the residual ridge, abutment teeth, and supporting tissues.
This document discusses the posterior palatal seal, including its definition, function, anatomical considerations, techniques for recording it, and potential errors. The key points are:
1. The posterior palatal seal provides retention, stability, and prevention of air leakage for maxillary dentures.
2. It is located along the junction of the hard and soft palate and extends from the pterygoid hamulus on either side.
3. Special techniques like using indelible pencil and having the patient say "AH" are used to identify and record the seal area during impression making.
04- Occlusion in prosthodontics- Concepts of occlusion.pptAmal Kaddah
This document discusses concepts of occlusion for complete dentures. It describes the importance of balanced occlusion and outlines numerous philosophies that have been proposed over time for arranging artificial tooth occlusion, including theories from Gysi, Hanau, Pleasure, and Boucher. While no single superior approach has been proven, a balanced articulation that considers factors like condylar guidance, incisal guidance, and cuspal angle appears most appropriate for satisfying patient needs regarding comfort, function, and aesthetics.
a detailed account of the principles of tooth preparation with main reference from Shillingburg
The presentation is available on request. Mail me at apurvathampi@gmail.com
This presentation includes brief history, classification and definition of overdentures and explains in details about the various tooth supported overdentures. It explains about bar attachments, ball attachments, telecsopic dentures etc.
The partial coverage restoration is a conservative restoration that requires less destruction of tooth structure than does a full coverage crown.
Its use is based on the premise that an intact surface of tooth structure should not be covered by a crown if its inclusion is not essential to the retention, strength, or esthetic result of the definitive restoration.
It include proximal stripping, Diagnostic aids, advantages, disadvantages, periodontal consideration, procedure for proximal stripping. Expansion, extraction, Distalization in detail as method of gaining space, Extra-oral, Intra-oral method for gaining space. uprighting, derotation of posterior teeth. proclination of anterior teeth.
RCT fixed expert 23-24pptx.pdf second partEl Sayed Omar
The document discusses several factors that are important for restoring endodontically treated teeth, including the need for full coverage restorations, use of posts, and biologic width considerations. It notes that adequate coronal restoration is equally as important as endodontic treatment. Factors like tooth type, structure loss, and occlusal stresses determine need for full coverage restorations. Post length, diameter, and ferrule effect are important principles for restoring teeth with posts. Techniques for managing severely damaged teeth like crown lengthening and orthodontic extrusion are also covered.
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 document discusses the interrelationships between orthodontics and periodontics. It notes that orthodontic tooth movement can potentially harm or benefit the periodontal tissues. Topics covered include the periodontal responses to different types of orthodontic tooth movement, as well as how orthodontics can be used to treat osseous defects and improve a patient's periodontal health and access to oral hygiene. However, orthodontic forces may also cause problems like gingival inflammation, root resorption, and pulpal reactions. The document emphasizes the importance of the orthodontist working closely with the periodontist.
This document provides guidelines for conducting an aesthetic try-in appointment when replacing anterior teeth with dentures. The try-in allows the patient and dentist to evaluate the fit, appearance, phonetics, and occlusion of the new denture teeth. The dentist assesses factors like tooth length, width, shade, overlap, and alignment. Patient feedback is also important to make any necessary modifications before the final denture is made.
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.
Diagnosis and treatment planning in implants/ cosmetic dentistry trainingIndian dental academy
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.
Diagnosis and treatment planning in implants / esthetic dentistry coursesIndian dental academy
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.
Orthognathic surgery and minor procedures like extractions are used in orthodontics to correct dental abnormalities. Major orthognathic surgeries like LeFort I osteotomies and sagittal split osteotomies reposition the jaws to correct dental malocclusions. Minor procedures include extractions of teeth like premolars, as well as surgical exposures of impacted teeth. The decision to use orthodontic camouflage versus surgery must be made early. Adjunctive facial procedures like rhinoplasty and genioplasty are also used to improve aesthetics beyond dental repositioning.
Diagnosis and treatment planning in implants 2. /certified fixed orthodontic ...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.
Management of missing maxillary lateral incisorMaira Abbas
This presentation is about the classification and management of missing maxillary incisors by different methods with advantages and disadvantages of each approach,
This document discusses atypical tooth preparations that are needed in certain clinical situations. It describes preparations needed for malaligned teeth, short teeth, mutilated teeth, periodontally compromised teeth, and endodontically treated teeth. For each situation, guidelines are provided for modifying the classic tooth preparation to address the specific problems presented while still providing adequate retention and resistance form. Endocrowns are also discussed as an alternative treatment for teeth with complete loss of the clinical crown where traditional post-and-core rehabilitation is not possible.
This document provides a 3-sentence summary of the key points:
The document discusses management strategies for furcation involvement, including non-surgical approaches like scaling and root planing as well as surgical options such as osseous resection, regeneration procedures, tunneling, and root resection. Nonsurgical therapy can provide good long-term results if furcation involvement is detected early and patients maintain good oral hygiene, but more advanced cases may require surgical interventions to improve access and cleanability. The selection of a treatment approach depends on factors like the severity of furcation invasion and the amount of remaining bone support.
UNIQUE^J COST-EFFECTIVE AND RETENTIVE REMOVABLE PROSTHESIS.pptxMugilarasanMunisamy
This case report describes the rehabilitation of a Kennedy Class I partially edentulous maxilla with a custom attachment retained removable prosthesis. A 58-year-old male patient presented with multiple missing upper teeth. A customized attachment system using die pins and sleeves was used to retain a maxillary removable partial denture, improving retention over a conventional clasp-retained prosthesis. This provided an affordable, effective treatment that protected the periodontal health of the abutment teeth compared to alternative fixed or implant-supported options. Periodic recalls were recommended to maintain function and abutment health long-term.
Similar to Preparation of periodontally weakened teeth (20)
This document provides information on different types of casting investments used in dentistry, including their composition, properties, and applications. It discusses gypsum-bonded, phosphate-bonded, and ethyl silicate-bonded investments. Gypsum-bonded investments are the oldest and used for gold alloys. Phosphate-bonded investments are used for metal-ceramic restorations and base metal alloys due to their higher temperature resistance. Ethyl silicate-bonded investments were rarely used due to time-consuming processing and flammable byproducts. The document outlines the ideal requirements, composition, setting reactions, expansion properties, and limitations of the different investment materials.
This document discusses various sequelae that can be caused by wearing complete dentures, including direct sequelae like denture stomatitis and residual ridge reduction, as well as indirect sequelae like burning mouth syndrome and reduction of masticatory muscles. It describes the clinical features and risk factors for different conditions and provides treatment recommendations, such as improving denture hygiene and fit to manage denture stomatitis. The document also discusses syndromes that can arise from the opposing relationship between a maxillary complete denture and natural mandibular teeth, like combination syndrome.
This document describes 15 different techniques that have been used over time for selecting the size, form, and shade of anterior teeth for complete denture patients. The key techniques discussed include Winkler's biological-physiological concept from the 1950s, Pounds concept from measuring facial features like bizygomatic width, and using anatomic landmarks like the incisive papilla as guides. More recent techniques involve using mold selectors and other instruments to correlate the tooth form with classifications like ovoid, square, and tapering facial forms based on geometric patterns. Selection considers factors like facial size, maxillary arch size, and achieving functional efficiency and aesthetically pleasing results.
The document discusses various techniques for managing abused and compromised soft tissues in complete denture patients. It describes tissue conditioners, resilient liners, and relining or rebasing dentures to protect damaged tissues. Impression techniques are modified for atrophic, flabby, or displaced ridges to accurately record tissue details, including selective pressure, admixed, and functional methods. Conditions like papillary hyperplasia, denture stomatitis, and burning mouth syndrome are addressed through treatments like denture adjustments, antimicrobials, and counseling.
1) A minor connector is the connecting link between the major connector or denture base and other parts of a removable partial denture like clasps or indirect retainers.
2) Minor connectors serve to transfer functional stresses to abutment teeth and distribute forces applied to one part of the denture throughout the prosthesis.
3) Types of minor connectors include those joining clasps to major connectors, indirect retainers to major connectors, and denture bases to major connectors. Their design depends on factors like rigidity needed and avoiding tissue irritation.
The document provides information on irreversible hydrocolloids, specifically alginate impression materials. It discusses the classification, ideal requirements, and history of alginate. The composition of alginate includes sodium alginate, calcium sulfate, and other ingredients. Alginate sets via a sol-gel reaction as calcium ions crosslink the sodium alginate chains. Properties like working time and setting time are controlled by factors like water temperature. Dimensional changes can occur due to syneresis, imbibition or evaporation. Methods to avoid changes include quick pouring and storage in a humid environment. Strength depends on proper spatulation during mixing.
The document discusses fibre reinforced composite fixed prostheses. It provides background on the materials used such as glass fibres embedded in a resin matrix. Fibre reinforced composites provide an alternative to traditional metal-ceramic restorations. They are esthetic, bond well to tooth structure, and have improved mechanical properties over particulate composites alone. Indications for fibre reinforced composite fixed prostheses include conservative tooth preparations and situations where a metal-free prosthesis is desired. Case studies and clinical trials show promising results for survival and quality of fibre reinforced composite bridges.
This document discusses considerations for removable partial denture (RPD) bases. It describes the functions of denture bases in supporting artificial teeth and transferring forces. Tooth-supported bases span between abutments and prevent migration with rests. Distal extension bases aim to minimize movement and improve stability. Maximum support is achieved through anatomic knowledge and impression/base accuracy. Materials like acrylic and thermoplastics are discussed. Relining may be needed due to tissue changes. Anterior and posterior tooth replacements can use acrylic, composite, porcelain or metal options. Stress breakers help minimize forces on tissues. Relining re-establishes ridge support for distal extension bases due to ridge changes over time.
This document provides an overview of CAD/CAM technology in prosthodontics. It discusses the history of CAD/CAM, including early pioneers like Duret, Moermann, and Andersson. The general principles of CAD/CAM systems are explained, including the three main components: scanners to digitize teeth, design software, and processing devices like 3-5 axis milling machines. Common techniques like subtractive milling and additive 3D printing are also summarized. Overall, the document serves as an introduction to CAD/CAM systems and how they have revolutionized dental prosthesis fabrication.
Diagnosis and treatment planning in complete denture patientsPriyam Javed
This document provides information on diagnosing and treating patients for complete dentures. It discusses the importance of patient evaluation, which includes taking a thorough medical and dental history and performing a clinical examination. The history focuses on understanding the patient's chief complaint, past dental experiences, existing dentures, general medical conditions, and psychosocial factors. A treatment plan is developed based on the diagnosis. Success requires consideration of the patient's attitude and ability to use dentures, as well as the clinician's skills.
This document discusses factors that influence the stability of complete dentures. It defines stability as the quality of a removable prosthesis to resist displacement from functional stresses. The three main factors discussed are:
1) The relationship of the denture base to underlying tissues - Proper adaptation of the denture base to the residual ridges and surrounding tissues improves stability.
2) The relationship of the denture borders to surrounding muscles - Contouring the denture to allow free function of muscles like the buccinator and allowing muscles to help seat the denture enhances stability.
3) The relationship of opposing occlusal surfaces - Proper occlusal harmony contributes to resisting forces that could displace the dentures.
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxEduSkills OECD
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
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Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) CurriculumMJDuyan
(𝐓𝐋𝐄 𝟏𝟎𝟎) (𝐋𝐞𝐬𝐬𝐨𝐧 𝟏)-𝐏𝐫𝐞𝐥𝐢𝐦𝐬
𝐃𝐢𝐬𝐜𝐮𝐬𝐬 𝐭𝐡𝐞 𝐄𝐏𝐏 𝐂𝐮𝐫𝐫𝐢𝐜𝐮𝐥𝐮𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐏𝐡𝐢𝐥𝐢𝐩𝐩𝐢𝐧𝐞𝐬:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
-Define entrepreneurship, distinguishing it from general business activities by emphasizing its focus on innovation, risk-taking, and value creation. Students will describe the characteristics and traits of successful entrepreneurs, including their roles and responsibilities, and discuss the broader economic and social impacts of entrepreneurial activities on both local and global scales.
Temple of Asclepius in Thrace. Excavation resultsKrassimira Luka
The temple and the sanctuary around were dedicated to Asklepios Zmidrenus. This name has been known since 1875 when an inscription dedicated to him was discovered in Rome. The inscription is dated in 227 AD and was left by soldiers originating from the city of Philippopolis (modern Plovdiv).
Communicating effectively and consistently with students can help them feel at ease during their learning experience and provide the instructor with a communication trail to track the course's progress. This workshop will take you through constructing an engaging course container to facilitate effective communication.
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
3. INTRODUCTION
• Teeth that have been saved by periodontal therapy often need cast
restorations.
• Can occur-caries,previous damage or teeth may have to be splinted
together to improve stability
• These teeth-may be needed as abutments for prostheses replacing
missing teeth.
3
4. Preparation finish line
• If improperly designed????
• Proximity of the preparation finish line to the furcations can
necessitate even further modification…
4
5. Location
• Optimal finish line-on the enamel away from the gingival sulcus.
• Shoulder-poor choice if margin is to be placed on the root surface
• Constricted smaller diameter of the root-axial reduction be extended into
the tooth –pulp threatening depth to obtain 1mm wide shoulder.
5
7. • Also weakens the natural structural durability
• Greater potential for stress concentration –?????
• CHAMFER finish line is preferred on the facial surface in this
apical position –???
7
9. FURCATION FLUTES
• It is where the root trunk divides into 2 or 3 roots.
• The designs of both the tooth preparations and crowns must be
different from those customarily made.
• The axial contours of crowns placed on teeth whose furcation
flutes are intercepted by preparation finish lines-reflect the
concavity
9
10. • Crown should recreate the contours of the furcation flute
• Mesial and distal concavities –softened and blended into axial
surfaces of crown-minimize difficulty in cleaning inaccessible
areas
10
12. Root resection
• Root is removed-irrespective of what is done with the crown
• Root amputation-removal of root without touching the crown
• Hemisection-tooth is separated through the crown and the
furcation
12
13. • Bambel D et al presented a case report of a patient who presented with pain
and swelling in the upper right first molar with h/o RCT.A deep periodontal
pocket was associated with buccal aspect of mesio-buccal root and a root
resection was done.
• They concluded that root resection is useful when involved tooth has
divergent roots and adequate distance between separation point remaining
roots and floor of pulp chamber.
13
14. Indications
• To maintain good hygiene and plaque control
• Severe vertical bone loss
• Severe loss of bone or attachment
• When furcation entrance is that narrow –instrument
inaccessibility-resection creates an area that can be adequately
cleaned.
14
16. Contraindications
• Fused roots or those that approximate other roots of the same
tooth
• If the furcation is too far apical???
• Maxillary first premolars???
16
17. • If excessive alveolar support has been lost uniformly all around
the roots, nothing is gained by removing a root.
• If a root that is to be kept cannot be successfully treated
endodontically
17
18. Capacity of resected root
• Teeth that have been resected –abutment teeth for FPD,splints or
vertical stops
• However their load bearing capacity has been lessened-diminished
attachment area.
• As level of bone is lowered by periodontal disease-periodontal
attachment decreases.
18
19. Resection technique
• Complete endodontic treatment before removing the root.
• Often its not possible to evaluate the furcation without completely
reflecting the flap
• Begin resection with a long ,thin diamond to cut through the vault
of the furcation.
19
20. • Remove all traces of the resected root at the time of surgery.
• Do not leave any vestigial remnants of the furcation vault.??
20
21. Tooth preparation and crown
configuration
• When a root has been removed from the tooth both the tooth
preparation and the contours of the crown will be different
because of the altered tooth shape.
21
22. Maxillary distofacial root
• The distal furcation is susceptible to frequent periodontal
involvement because of the proximity of the divergent distofacial
root to the nearby second molar and its inaccessibility to the
patient.
22
23. • Since its small-occlusal outline resembles a lamb chop –occlusal
direction
• Distofacial embrasure is larger than usual ,enabling patient to
keep the area clean.
23
24. • Distofacial cusp smaller-does not create any esthetic problems-
hidden by the mesiofacial cusp
• Proximal contact is contoured to its normal faciolingual size
24
25. • Imp-contours of distofacial cusp apical to the contact area –
definitive concave shape.
• Hence-crown contours will be aligned to the root configuration in
that critical area,preventing impingement on the gingiva
25
27. Maxillary mesiofacial root
• Loss-greater loss of support than that of distofacial root
• Accounts for 25-36% of first molar root area.
• If removed-occlusal outline will have a more triangular
configuration-greater faciolingual dimension
27
28. • Finish line will extend-apically past the pulp chamber
• Concavity gingivofacial to the proximal contact on the mesial
surface of the crown.
28
29. • OBJECTIVES
• Long-term retention of teeth and especially molars in function is the ultimate
goal of periodontal therapy. Root-resective therapy is a treatment option for
molars with advanced furcation involvement, which has been questioned
because of the heterogenous success rates published in literature.
This study aimed to evaluate long-term results of root-resective treatment
over a period of up to 30 years.
• METHODS:
• In this retrospective cohort, 90 root-resected molars in 69 patients were
examined for 4-30 years (14.7 ± 6.8 years). The complete treatment sequence
was performed by one of the authors in a general dental practice.
29
30. • RESULTS:
• Overall cumulative survival rate was 90.6% after 10 years, but then
decreased considerably. Molars after root resection had a median survival
time of 20 years. The incidence of endodontic complications leading to tooth
extraction was only 26.7%, 50% were lost due to periodontal problems, and
16.7% because of caries. Mandibular molars had a significantly lower
relative risk of loss than molars in the maxilla .
• Mandibular molars showed a survival probability of almost 80% even
20 years after root resection.
• CONCLUSION:
• Root-resective therapy is a predictable treatment option, when care is
administered at each phase of therapy..
30
J Clin Periodontol
31. Maxillary palatal root
• When removed-palatal surface of the preparation will be flat –
resembling the configuration of a remaining root stump.
• The central groove is aligned with those of the occlusal surfaces
of adjacent teeth.
• The lingual cusps will be quite small
31
33. • The presence of these cusps –area inaccessible to hygiene
maintenance-linguogingival segment of the crown.
• This will also create a severe torquing moment on the tooth –
either tip the tooth lingually or fracture the tooth preparation
under the crown
33
35. Maxillary facial roots
• Here only the palatal root remains
• Preparation of the tooth overlying this root will result –oval or
circular configuration depending on the shape of the root itself.
35
36. • Resulting crown should occlude with its mandibular counterpart
in such a way that occlusal forces cannot be directed facially.
• This will place it in a near reverse occlusal or cross-bite
relationship
36
37. • Harwell E et al conducted a study in which maxillary molars were treated
with root resections were reviewed from 34 patients in a series of 5 patient
histories.
• All teeth were used as abutments for Rpd/Fpd.6-20 yr follow up were
reported.Approximately 70% of all teeth treated by root resection remained
for more than 4 years or longer.
37
Int J Prosthodont.1998;1:87-92
38. Mandibular hemisection
• Frequently one root is removed while the other root remains.
• Saving the mesial segment would be desirable –if molar in question were the last
tooth in the arch and the opposing teeth did not extend very far distal to the
mandibular first molar.
• Distal root could be used as an abutment for a short span fixed partial denture
replacing the mesial root.
38
40. • Occasionally, one root may be used as the distal abutment for a
longer span fixed partial denture, replacing an entire molar.
• This must be viewed as a high risk prosthesis,since the remaining
distal root has slightly less than one-third of the alveolar support
of the intact tooth with normal bone.
40
42. • Zafiropaulos et al stated that success rates for both periodontal and implant
therapy are often dependent on site and tooth type.
• For periodontally involved mandibular molars decision to hemisect or place
an implant is often complicated.
• Within limitations of the study,results indicated that in periodontitis
patients,hemisected mandibular molars were more prone to complications
than implants.
42
J Oral Implantol.2009;35(2),52-62
43. • Park JB et al reported the long-term effects of hemisection of teeth with
questionable prognosis.
• The outcome in a 34-year-old male patient with mobile teeth in the lower
left posterior area is reported.
• Removal of the mesial root of the mandibular first molar and the
distal root of the mandibular second molar was done. The final restoration
was performed after using a provisional restoration for three months.
43
44. J Int Acad Periodontol. 2009 Jul;11(3):214-9
• The final restoration functioned well without detectable mobility or any
noticeable bone loss for up to seven years.
• Within the limits of this report, the hemisection of molars with questionable
prognosis can maintain the teeth without detectable bone loss for a long-term
period, provided that the patient has optimal oral hygiene.
44
45. BICUSPIDIZATION
• If an effort is made to save both roots of the molar following the
resection, the process is described as ‘bicuspidization’
• If both roots are maintained , it is important that they be separated
from each other to allow normal gingival embrasure spaces.
• Sometimes the roots are distinctly separate, angling out of the
furcation and providing the separation naturally.
45
48. • However,if they are not naturally separated,some measure must
be taken to accomplish it .
• Separation may be accomplished by moving the roots apart
orthodontically,or it may be accomplished with inter-radicular
shoulders on the crown preparations on the separated roots.
48
50. Skyfurcation
• It may be desirable to separate the roots of a maxillary molar
without removing a root-roots have to be long,well supported by
bone and distinctly separate.
• Roots-cut apart-then joined by a crown-in reality is an inter-
radicular splint with concave connectors from one root to the
other.
50
53. • The present investigation was designed to evaluate the long-term effect
of root-resective therapy in the treatment of furcation-involved molars. The
patient sample included 72 patients, 21-62 years of age, who presented
periodontal lesions in the posteriors segments of the mouth including
furcation involvement of various degrees)
53
54. • After an initial examination, each patient was subjected to a series of full-
mouth scaling and root planning and recalled after 3 months.During the
surgical procedure, the furcation-involved teeth were subjected to root-
resective therapy in conjunction with osseous recontouring and apically
positioned flaps (test sites).
54
55. • After a period of 6 months of healing and plaque control supervision
following surgical procedures, the patients were recalled for a baseline
examination.
• They were then enrolled in a maintenance program including professional
tooth cleaning every 26 months. The patients were re-examined 3, 5 and 10
years post-operatively.
55
56. • The results of the assessments demonstrated that the survival rate, during the
10-year period of observation, reached 93% at test and 99% at control sites.
• The positive treatment outcome at the root-resected, furcation-involved teeth
as well as at non-furcation-involved teeth was probably the consequence of
the reestablishment of a tissue morphology favorable for oral hygiene and
careful plaque control by the patients.
56
J Clin Periodontol. 1998 Mar;25(3):209-14.
57. • Erlich et al reported 87% success rate in furcation involved teeth
treated by root resection after 10 to 18 years.
• Ross and Thompson on the other hand published a similar success
rate-88% for furcation involved molars that were treated
conservatively without root resection.
57
SUMMARY
58. • Hamp and associates reported being able to maintain all 87 of the
resected teeth in their study over a 5 year period.
• Mandibular roots are more likely to fail than maxillary
roots….reason???
58
59. • Derks H,Westheide D.Retention of molars after root-resective therapy: a
retrospective evaluation of up to 30 year.Clin Oral Investig 2018
Apr;22(3):1327-15.
• Carnavale G, di Febo G. Long-term effects of root-resective therapy in
furcation-involved molars. A 10-year longitudinal study. J Clin
Periodontol 1998 Mar;25(3):209-14
• Park J B. Hemisection of teeth with questionable prognosis. Report of a case
with seven-year results.J Int Acad Periodont 2009 Jul;11(3):214-9.
59
JOURNAL REFERENCES
60. • Zafiropoulos G,Kasaj A.Mandibular molar root resection versus implant
therapy:A retrospective non randomized study.J Oral
Implantol.2009;35(2),52-62
• Harwell E W.Vital root resection.A conservative procedure for abutment
teeth.Int J Prosthodont.1998;1:87-92
• Ehrlich J,Root resection and separation of multirooted teeth:A 10 year follow
up study.Quintessence Int 1989:34
60