This document discusses the use of lasers in soft and hard tissue management for esthetic dental procedures. It provides background on the history and mechanisms of dental lasers. The erbium laser wavelength is highlighted as it allows conservative, less invasive treatment of both hard tissues like enamel and bone as well as soft tissues. Specific techniques described include laser-assisted cavity preparation and restoration, as well as cosmetic procedures like gingival contouring and osseous crown lengthening to enhance the smile. Case studies demonstrate how these laser techniques can be used to adjust gingival levels and proportions for esthetic outcomes.
This document discusses the use of lasers in periodontal treatment. It begins by introducing several types of lasers approved for soft tissue treatments in dentistry, including CO2, Nd:YAG, and diode lasers. The Er:YAG laser is also noted as being approved for hard tissue treatments. The document then lists advantages of laser surgery over conventional treatments. It provides examples of soft tissue applications like gingivectomy, gingivoplasty, and frenectomy. Hard tissue applications mentioned include scaling and root planing, bone procedures, whitening, and crown lengthening. Specific case examples are also included to illustrate laser procedures.
The document discusses the history and evolution of magnification tools in dentistry, from simple loupes to more advanced technologies like endoscopy and dental operating microscopes. It notes that traditional endodontics relied on feel rather than sight, but that higher levels of magnification allow dentists to see more detail, improving diagnosis and treatment. Specifically, it provides information on loupes, endoscopy, and dental operating microscopes, describing their components, magnification capabilities, advantages, and limitations. The document emphasizes that while loupes can provide up to 4.5x magnification, dental operating microscopes allow for higher magnifications ranging from 2.5x to over 40x, improving visualization of surgical sites and evaluation of techniques.
This document discusses a pilot study that compares manual scaling and root planing (SRP) with and without magnification loupes using a scanning electron microscope. It provides background on the history and methods of magnification in dentistry. Loupes and dental operating microscopes are described. Applications of magnification in periodontal therapy include non-surgical and surgical procedures. The aim of the study was to compare the amount of remaining calculus, loss of tooth substance, and roughness of root surfaces after SRP with or without loupes. Thirty extracted teeth were divided into two groups that underwent SRP either with or without loupes, then analyzed using a scanning electron microscope.
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.
INTRODUCTION
HISTORY
PRINCIPLES OF WORKING OF A LASER
FUNDAMENTALS OF LASER
CHARACTERISTICS OF LASER
CLASSIFICATION OF LASER
EFFECTS OF LASER ON SOFT AND HARD TISSUES
VARIOUS LASERS AVAILABLE FOR PERIDONTAL USE
APPLICATION OF LASER TREATMENT IN PERIODONTAL THERAPY
ADVANTAGES & DISADVANTAGES OF LASER IN PERIODONTAL THERAPY
LASER PRECAUTIONS
LASER HAZARDS
RECENT ADVANCES
CONCLUSION
Melanin is the primary pigment that causes gingival pigmentation. It is produced by melanocytes located in the basal layer of the gingiva. There are several causes of gingival pigmentation including medications like minocycline, genetic conditions like hemochromatosis, and environmental factors like smoking. Treatment options for aesthetic or medical reasons include surgical techniques using a scalpel, cryosurgery, or lasers to remove the pigmented layer. Nd:YAG and Er:YAG lasers have been effectively used for gingival depigmentation due to their affinity for melanin.
Lasers and its application in periodonticsShilpa Shiv
The document discusses different types of lasers used in periodontology, including their properties, mechanisms of interaction with tissue, safety classifications, and clinical applications. It provides details on lasers such as the argon, diode, Nd:YAG, Er:YAG, and CO2 lasers, covering their wavelengths, active mediums, delivery systems, absorption characteristics, and periodontal uses. The document also examines laser tissue interactions, safety considerations, and the theoretical zones of tissue change caused by laser exposure.
This document discusses the use of lasers in periodontal treatment. It begins by introducing several types of lasers approved for soft tissue treatments in dentistry, including CO2, Nd:YAG, and diode lasers. The Er:YAG laser is also noted as being approved for hard tissue treatments. The document then lists advantages of laser surgery over conventional treatments. It provides examples of soft tissue applications like gingivectomy, gingivoplasty, and frenectomy. Hard tissue applications mentioned include scaling and root planing, bone procedures, whitening, and crown lengthening. Specific case examples are also included to illustrate laser procedures.
The document discusses the history and evolution of magnification tools in dentistry, from simple loupes to more advanced technologies like endoscopy and dental operating microscopes. It notes that traditional endodontics relied on feel rather than sight, but that higher levels of magnification allow dentists to see more detail, improving diagnosis and treatment. Specifically, it provides information on loupes, endoscopy, and dental operating microscopes, describing their components, magnification capabilities, advantages, and limitations. The document emphasizes that while loupes can provide up to 4.5x magnification, dental operating microscopes allow for higher magnifications ranging from 2.5x to over 40x, improving visualization of surgical sites and evaluation of techniques.
This document discusses a pilot study that compares manual scaling and root planing (SRP) with and without magnification loupes using a scanning electron microscope. It provides background on the history and methods of magnification in dentistry. Loupes and dental operating microscopes are described. Applications of magnification in periodontal therapy include non-surgical and surgical procedures. The aim of the study was to compare the amount of remaining calculus, loss of tooth substance, and roughness of root surfaces after SRP with or without loupes. Thirty extracted teeth were divided into two groups that underwent SRP either with or without loupes, then analyzed using a scanning electron microscope.
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.
INTRODUCTION
HISTORY
PRINCIPLES OF WORKING OF A LASER
FUNDAMENTALS OF LASER
CHARACTERISTICS OF LASER
CLASSIFICATION OF LASER
EFFECTS OF LASER ON SOFT AND HARD TISSUES
VARIOUS LASERS AVAILABLE FOR PERIDONTAL USE
APPLICATION OF LASER TREATMENT IN PERIODONTAL THERAPY
ADVANTAGES & DISADVANTAGES OF LASER IN PERIODONTAL THERAPY
LASER PRECAUTIONS
LASER HAZARDS
RECENT ADVANCES
CONCLUSION
Melanin is the primary pigment that causes gingival pigmentation. It is produced by melanocytes located in the basal layer of the gingiva. There are several causes of gingival pigmentation including medications like minocycline, genetic conditions like hemochromatosis, and environmental factors like smoking. Treatment options for aesthetic or medical reasons include surgical techniques using a scalpel, cryosurgery, or lasers to remove the pigmented layer. Nd:YAG and Er:YAG lasers have been effectively used for gingival depigmentation due to their affinity for melanin.
Lasers and its application in periodonticsShilpa Shiv
The document discusses different types of lasers used in periodontology, including their properties, mechanisms of interaction with tissue, safety classifications, and clinical applications. It provides details on lasers such as the argon, diode, Nd:YAG, Er:YAG, and CO2 lasers, covering their wavelengths, active mediums, delivery systems, absorption characteristics, and periodontal uses. The document also examines laser tissue interactions, safety considerations, and the theoretical zones of tissue change caused by laser exposure.
Photobiomodulation technique uses low intensity lasers and light in the red to near infrared zone (600 to 1000 nm wavelength) which brings about biological changes at the cellular level thus initiating the bone remodeling. As a result accelerates orthodontic tooth movement without causing any harm to the periodontal tissues
Laser technology provides several benefits for prosthodontic and implant dentistry procedures. Lasers allow for precise soft and hard tissue incisions, coagulation to control bleeding, and reduction of postoperative pain and swelling. The erbium family of lasers can be used for soft tissue procedures as well as bone removal or contouring. This makes lasers useful for denture support surgery like vestibuloplasty and tuberosity reduction. Lasers also aid in second stage implant surgery by providing a dry, clean surgical site for immediate impressions. While many lasers can be used, erbium and carbon dioxide lasers interact minimally with dental implants.
The document provides information on internal derangement of the temporomandibular joint (TMJ). It begins with definitions of internal derangement and Wilkes classification system for stages of derangement. It then discusses etiology, including trauma as a common cause. Physical findings and non-surgical and surgical treatment procedures are outlined. Non-surgical options include splint therapy, medications, acupuncture and others aimed at reducing pain and improving joint function.
This document discusses several techniques for removing caries from teeth in a less invasive manner than traditional drilling. It describes techniques such as ozone therapy, air abrasion, chemomechanical caries removal, use of smart burs that only remove decayed tooth structure, stepwise excavation, and use of lasers or ultrasonics. For each technique, it provides brief details about how the technique works and its advantages, such as being less painful for patients and removing only decayed tooth material while leaving healthy tooth structure intact. The goal of these alternative caries removal techniques is to better preserve the pulp and reduce risks of negative pulpal outcomes.
CBCT provides high quality 3D images that allow for more accurate implant planning compared to traditional 2D radiography. It allows visualization of anatomical structures in multiple planes, and accurate measurements. While it provides more information, inexperienced clinicians may misinterpret data. CBCT is recommended for implant planning in aesthetic zones, complex cases, and when vital anatomy needs to be assessed. Virtual planning with CBCT can be used to determine grafting needs, tumor resection plans, and angled implant positions to avoid lifting sinus floors.
The document discusses the importance of magnification in endodontics. It begins by explaining how endodontic procedures were previously done without visualization and relied solely on tactile sensitivity. The introduction of the operating microscope 15 years ago revolutionized the field by allowing endodontists to visualize the root canal system. The document then discusses the relative sizes of bacteria, cells, and other microscopic structures to emphasize the limitations of the unaided human eye. It explains how magnification tools like microscopes, loupes, and lights allow dentists to see structures smaller than what the naked eye can see and improve clinical outcomes. Finally, it describes different types of loupes and their optical configurations, working distances, and magnification ranges.
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.
Magnification is an important tool in dentistry that improves visualization of small structures. While loupes provide 2-5x magnification, microscopes allow for higher magnification of 6-40x as well as enhanced lighting. The key components of a microscope include the supporting structure, body with eyepieces, magnification changers, objective lens, and light source. Microscopes provide superior magnification, illumination, depth of field, and allow for documentation compared to loupes. Accessories like filters, cameras, and assistant scopes further enhance the utility of microscopes for dental procedures.
The Dahl concept uses a removable appliance to create space for restoring anterior teeth affected by tooth surface loss. It works by suprerrupting posterior teeth and intruding anterior teeth. This generates space to add restorations to anterior teeth with minimal preparation. The document discusses two clinical cases where the Dahl appliance was used successfully to create space and allow for conservative restorations to improve aesthetics and function for patients with localized anterior tooth surface loss.
This document discusses bone grafting techniques used in dentistry. It defines a graft as viable tissue transplanted from a donor site to a host tissue. Bone grafts are classified based on their source and mode of action. Autografts from the patient are considered the gold standard as they are osteogenic, osteoinductive, and osteoconductive. Key steps in the bone grafting procedure are incision, flap design, root debridement, defect debridement, graft material preparation and placement, and suturing. Evaluation methods include clinical measurements, radiographs, surgical re-entry, and histology. Autografts provide the best outcomes but alloplastic grafts and other options are also discussed.
Osseointegration, definition, history, process of osseointegration, factors influencing osseointegration, methods for evaluation of osseointegration, failure of osseointegration
Basic to recent advances in local drug delivery also covering the effects of GCF flow on local drugs as well as use of local drugs used in periimplantitis.
The document discusses piezoelectric surgery, which uses ultrasonic microvibrations from piezoelectric inserts to cut bone precisely while sparing soft tissues. Key points:
1. Piezoelectric surgery was invented in 1988 and uses modulated ultrasonic frequencies (25-30 kHz) to cut mineralized tissue selectively.
2. It allows for precise cuts with less bleeding and better visibility due to cavitation. Post-operative pain and healing time are reduced compared to traditional techniques.
3. Indications include various dental and medical procedures like sinus lifts, grafting and extractions where selective bone cuts are needed to protect adjacent soft tissues.
This document discusses root coverage procedures for improving esthetics of the smile, including treatment of gummy smiles, lip repositioning, papilla reconstruction, and gingival depigmentation. It describes the normal anatomy and proportions of a healthy smile. It then provides details on the diagnosis and treatment options for each root coverage procedure, including gingivectomy/flap surgery to treat excess gingival display, various surgical techniques for reconstructing papillae between teeth, and methods for depigmenting hyperpigmented gingiva such as bur abrasion, chemicals, surgical scraping and lasers. The conclusion emphasizes that achieving an esthetic smile often requires a multidisciplinary approach across several dental specialties.
The document discusses working length determination in endodontics. It defines working length as the distance from a coronal reference point to the point where canal preparation and obturation should terminate. This is usually 1mm short of the apical foramen. Several methods of determining working length are discussed, including radiographic methods and the use of electronic apex locators, which provide objective measurements with high accuracy. Consequences of working length that is too long or too short are also outlined.
This document discusses crown lengthening procedures and biological width. It defines biological width as the natural distance between the base of the gingival sulcus and alveolar bone, which is typically 2mm. Crown lengthening surgically exposes more tooth structure above the bone to avoid violating the biological width and prevent inflammation. The document outlines different types of crown lengthening procedures based on the available soft and hard tissue dimensions, as well as factors to consider like gingival biotype and restoration design. Maintaining at least 3mm of tooth structure above bone is recommended to allow for proper restorative margins and healing.
1. The document discusses the history, principles, types, and mechanisms of bone grafts. It provides definitions of key terms like graft, flap, osteogenesis, osteoinduction, and osteoconduction.
2. The main types of bone grafts discussed are autogenous grafts, allografts, xenografts, alloplasts, and composite grafts. Autogenous grafts are considered the gold standard due to their osteogenic, osteoinductive and osteoconductive properties but require a second surgical site.
3. Allografts avoid a second surgical site but have reduced osteoinductive potential and risks of disease transmission or immune rejection. Growth factor based grafts and
This document provides an overview of endodontic surgery. It begins with a brief history of endodontic surgery dating back over 1500 years. It then discusses the definition, rationale, objectives, and indications for endodontic surgery. The document outlines the classification of endodontic surgery and describes various surgical procedures like periradicular surgery, root-end resection, and root-end filling. It provides details on surgical instruments, treatment planning considerations, and techniques for achieving profound local anesthesia. In summary, the document provides a comprehensive review of the principles and procedures involved in endodontic surgery.
1. Periodontal therapy aims to establish a healthy dentition through non-surgical and surgical treatment. Surgical treatment often involves raising a periodontal flap to access the root surface.
2. There have been many advances in periodontal flap design since the 19th century aimed at improving access, visibility and outcomes. Factors such as blood supply, extent of disease, osseous defects and esthetics inform the choice of flap.
3. Modern periodontal flap surgery techniques emphasize preserving blood supply through careful incision placement, minimizing trauma, and obtaining adequate access and closure.
Applications of ultrasonics in endodonticsMettinaAngela
This document discusses various applications of ultrasonics in endodontics. It covers topics like ultrasonic retreatment to remove gutta percha fillings, using ultrasonics for access refinement and to manage calcifications, removing separated instruments from the root canal, and retrieving old posts. Ultrasonics provides benefits for these procedures like more efficient removal of materials, enhanced safety and control, and minimal damage to tooth structure compared to other techniques. Specific tips, techniques and case reports are presented for different clinical applications of ultrasonics in endodontic retreatment and procedures.
This document discusses the use of lasers in pediatric dentistry. It begins with an introduction to lasers and their history and classifications. The main advantages of lasers are reduced pain and bleeding. Applications discussed include caries removal and prevention, frenectomy for ankyloglossia, and pulpotomy. Lasers allow these procedures to be performed in a less stressful manner for children. However, high costs and need for additional training are limitations to their use in pediatric dentistry.
Photobiomodulation technique uses low intensity lasers and light in the red to near infrared zone (600 to 1000 nm wavelength) which brings about biological changes at the cellular level thus initiating the bone remodeling. As a result accelerates orthodontic tooth movement without causing any harm to the periodontal tissues
Laser technology provides several benefits for prosthodontic and implant dentistry procedures. Lasers allow for precise soft and hard tissue incisions, coagulation to control bleeding, and reduction of postoperative pain and swelling. The erbium family of lasers can be used for soft tissue procedures as well as bone removal or contouring. This makes lasers useful for denture support surgery like vestibuloplasty and tuberosity reduction. Lasers also aid in second stage implant surgery by providing a dry, clean surgical site for immediate impressions. While many lasers can be used, erbium and carbon dioxide lasers interact minimally with dental implants.
The document provides information on internal derangement of the temporomandibular joint (TMJ). It begins with definitions of internal derangement and Wilkes classification system for stages of derangement. It then discusses etiology, including trauma as a common cause. Physical findings and non-surgical and surgical treatment procedures are outlined. Non-surgical options include splint therapy, medications, acupuncture and others aimed at reducing pain and improving joint function.
This document discusses several techniques for removing caries from teeth in a less invasive manner than traditional drilling. It describes techniques such as ozone therapy, air abrasion, chemomechanical caries removal, use of smart burs that only remove decayed tooth structure, stepwise excavation, and use of lasers or ultrasonics. For each technique, it provides brief details about how the technique works and its advantages, such as being less painful for patients and removing only decayed tooth material while leaving healthy tooth structure intact. The goal of these alternative caries removal techniques is to better preserve the pulp and reduce risks of negative pulpal outcomes.
CBCT provides high quality 3D images that allow for more accurate implant planning compared to traditional 2D radiography. It allows visualization of anatomical structures in multiple planes, and accurate measurements. While it provides more information, inexperienced clinicians may misinterpret data. CBCT is recommended for implant planning in aesthetic zones, complex cases, and when vital anatomy needs to be assessed. Virtual planning with CBCT can be used to determine grafting needs, tumor resection plans, and angled implant positions to avoid lifting sinus floors.
The document discusses the importance of magnification in endodontics. It begins by explaining how endodontic procedures were previously done without visualization and relied solely on tactile sensitivity. The introduction of the operating microscope 15 years ago revolutionized the field by allowing endodontists to visualize the root canal system. The document then discusses the relative sizes of bacteria, cells, and other microscopic structures to emphasize the limitations of the unaided human eye. It explains how magnification tools like microscopes, loupes, and lights allow dentists to see structures smaller than what the naked eye can see and improve clinical outcomes. Finally, it describes different types of loupes and their optical configurations, working distances, and magnification ranges.
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.
Magnification is an important tool in dentistry that improves visualization of small structures. While loupes provide 2-5x magnification, microscopes allow for higher magnification of 6-40x as well as enhanced lighting. The key components of a microscope include the supporting structure, body with eyepieces, magnification changers, objective lens, and light source. Microscopes provide superior magnification, illumination, depth of field, and allow for documentation compared to loupes. Accessories like filters, cameras, and assistant scopes further enhance the utility of microscopes for dental procedures.
The Dahl concept uses a removable appliance to create space for restoring anterior teeth affected by tooth surface loss. It works by suprerrupting posterior teeth and intruding anterior teeth. This generates space to add restorations to anterior teeth with minimal preparation. The document discusses two clinical cases where the Dahl appliance was used successfully to create space and allow for conservative restorations to improve aesthetics and function for patients with localized anterior tooth surface loss.
This document discusses bone grafting techniques used in dentistry. It defines a graft as viable tissue transplanted from a donor site to a host tissue. Bone grafts are classified based on their source and mode of action. Autografts from the patient are considered the gold standard as they are osteogenic, osteoinductive, and osteoconductive. Key steps in the bone grafting procedure are incision, flap design, root debridement, defect debridement, graft material preparation and placement, and suturing. Evaluation methods include clinical measurements, radiographs, surgical re-entry, and histology. Autografts provide the best outcomes but alloplastic grafts and other options are also discussed.
Osseointegration, definition, history, process of osseointegration, factors influencing osseointegration, methods for evaluation of osseointegration, failure of osseointegration
Basic to recent advances in local drug delivery also covering the effects of GCF flow on local drugs as well as use of local drugs used in periimplantitis.
The document discusses piezoelectric surgery, which uses ultrasonic microvibrations from piezoelectric inserts to cut bone precisely while sparing soft tissues. Key points:
1. Piezoelectric surgery was invented in 1988 and uses modulated ultrasonic frequencies (25-30 kHz) to cut mineralized tissue selectively.
2. It allows for precise cuts with less bleeding and better visibility due to cavitation. Post-operative pain and healing time are reduced compared to traditional techniques.
3. Indications include various dental and medical procedures like sinus lifts, grafting and extractions where selective bone cuts are needed to protect adjacent soft tissues.
This document discusses root coverage procedures for improving esthetics of the smile, including treatment of gummy smiles, lip repositioning, papilla reconstruction, and gingival depigmentation. It describes the normal anatomy and proportions of a healthy smile. It then provides details on the diagnosis and treatment options for each root coverage procedure, including gingivectomy/flap surgery to treat excess gingival display, various surgical techniques for reconstructing papillae between teeth, and methods for depigmenting hyperpigmented gingiva such as bur abrasion, chemicals, surgical scraping and lasers. The conclusion emphasizes that achieving an esthetic smile often requires a multidisciplinary approach across several dental specialties.
The document discusses working length determination in endodontics. It defines working length as the distance from a coronal reference point to the point where canal preparation and obturation should terminate. This is usually 1mm short of the apical foramen. Several methods of determining working length are discussed, including radiographic methods and the use of electronic apex locators, which provide objective measurements with high accuracy. Consequences of working length that is too long or too short are also outlined.
This document discusses crown lengthening procedures and biological width. It defines biological width as the natural distance between the base of the gingival sulcus and alveolar bone, which is typically 2mm. Crown lengthening surgically exposes more tooth structure above the bone to avoid violating the biological width and prevent inflammation. The document outlines different types of crown lengthening procedures based on the available soft and hard tissue dimensions, as well as factors to consider like gingival biotype and restoration design. Maintaining at least 3mm of tooth structure above bone is recommended to allow for proper restorative margins and healing.
1. The document discusses the history, principles, types, and mechanisms of bone grafts. It provides definitions of key terms like graft, flap, osteogenesis, osteoinduction, and osteoconduction.
2. The main types of bone grafts discussed are autogenous grafts, allografts, xenografts, alloplasts, and composite grafts. Autogenous grafts are considered the gold standard due to their osteogenic, osteoinductive and osteoconductive properties but require a second surgical site.
3. Allografts avoid a second surgical site but have reduced osteoinductive potential and risks of disease transmission or immune rejection. Growth factor based grafts and
This document provides an overview of endodontic surgery. It begins with a brief history of endodontic surgery dating back over 1500 years. It then discusses the definition, rationale, objectives, and indications for endodontic surgery. The document outlines the classification of endodontic surgery and describes various surgical procedures like periradicular surgery, root-end resection, and root-end filling. It provides details on surgical instruments, treatment planning considerations, and techniques for achieving profound local anesthesia. In summary, the document provides a comprehensive review of the principles and procedures involved in endodontic surgery.
1. Periodontal therapy aims to establish a healthy dentition through non-surgical and surgical treatment. Surgical treatment often involves raising a periodontal flap to access the root surface.
2. There have been many advances in periodontal flap design since the 19th century aimed at improving access, visibility and outcomes. Factors such as blood supply, extent of disease, osseous defects and esthetics inform the choice of flap.
3. Modern periodontal flap surgery techniques emphasize preserving blood supply through careful incision placement, minimizing trauma, and obtaining adequate access and closure.
Applications of ultrasonics in endodonticsMettinaAngela
This document discusses various applications of ultrasonics in endodontics. It covers topics like ultrasonic retreatment to remove gutta percha fillings, using ultrasonics for access refinement and to manage calcifications, removing separated instruments from the root canal, and retrieving old posts. Ultrasonics provides benefits for these procedures like more efficient removal of materials, enhanced safety and control, and minimal damage to tooth structure compared to other techniques. Specific tips, techniques and case reports are presented for different clinical applications of ultrasonics in endodontic retreatment and procedures.
This document discusses the use of lasers in pediatric dentistry. It begins with an introduction to lasers and their history and classifications. The main advantages of lasers are reduced pain and bleeding. Applications discussed include caries removal and prevention, frenectomy for ankyloglossia, and pulpotomy. Lasers allow these procedures to be performed in a less stressful manner for children. However, high costs and need for additional training are limitations to their use in pediatric dentistry.
Lasers have various applications in operative dentistry including cavity preparation, caries detection, bleaching, and composite resin polymerization. Different types of lasers such as Er:YAG, CO2, and diode lasers can be used to ablate dental hard tissues with little pulp damage. Lasers also increase the resistance of enamel and dentin to caries, aid in caries diagnosis, and accelerate tooth whitening. Their precision and ability to coagulate tissues make lasers beneficial for various dental procedures with advantages such reduced pain and scarring.
The document discusses the history and applications of lasers in orthodontics. It begins with the history of lasers, describing their development in the 1960s. It then covers the various types of lasers used in dentistry and orthodontics, including CO2, Nd:YAG, and diode lasers. Applications of lasers in orthodontics discussed include polymerizing adhesives, preventing enamel scars, increasing bracket bond strength, reducing pain, debonding brackets, facial analysis, digital models, gingival contouring, and measuring pulpal blood flow. Potential harmful effects like fires, eye damage, and laser plume are also reviewed. In conclusion, lasers are now an accepted treatment mod
Lasers have many applications in operative dentistry including caries detection, cavity preparation, prevention of dental caries, bleaching, and photopolymerization of composite resin. Different types of lasers like Er:YAG, CO2, and diode lasers can be used safely for hard and soft tissue procedures with benefits like minimal damage, hemostasis, reduced post-operative pain and inflammation, and sterilization of wounds. While lasers provide advantages, training is required for their safe use and they can be costly to obtain.
The term LASER is an acronym for ‘Light Amplification by the Stimulated Emission of Radiation’. As its first application in dentistry by Miaman, in 1960, the laser has seen various hard and soft tissue applications. In the last two decades, there has been an explosion of research studies in laser application. In hard tissue application, the laser is used for caries prevention, bleaching, restorative removal and curing, cavity preparation, dentinal hypersensitivity, growth modulation and for diagnostic purposes, whereas soft tissue application includes wound healing, removal of hyperplastic tissue to uncovering of impacted or partially erupted tooth, photodynamic therapy for malignancies, photostimulation of herpetic lesion. Use of the laser proved to be an effective tool to increase efficiency, specificity, ease, and cost and comfort of the dental treatment.
This document summarizes a study that compares the bond strength of orthodontic brackets bonded to enamel surfaces prepared by different methods: phosphoric acid etching, Er:YAG laser etching, a combination of acid etching and laser etching, and laser etching followed by acid etching. Sixty human premolars were divided into four groups based on the enamel preparation method used. Brackets were bonded to the prepared enamel surfaces using a standard protocol. The bond strength of each sample was then tested using a universal testing machine. The study aims to investigate methods that provide maximum bond strength and analyze the fracture mode for each preparation method.
LASERS – IT’S ROLE IN PERIODONTAL REGENERATIONhiij
The use of lasers has evolved as clinical experience along with scientific investigation. The dental
lasers of today have benefited from decades of laser research and have their basis in certain
theories from the field of quantum mechanics. When used efficaciously and ethically, lasers are an
exceptional modality of treatment for many clinical conditions that dental specialists treat on a
daily basis. The concept of using lasers for the treatment of periodontal disease elicits very strong
reactions from all sides of spectrum. Evidence suggests that lasers are useful as an adjunct or
alternative to traditional approaches in periodontal therapy. Future direction of lasers would be
towards a minimally invasive regenerative procedures along with laser assisted calculus detection
systems using laser fluorescence that is optical coherence tomography and a laser system which
selectively and completely removes the plaque and calculus that is under development. With recent
advances and development of wide range of laser wavelengths, different instrument designs and
different delivery systems, the purpose of this review is to determine the application and current
concept of lasers in the regeneration of periodontal tissues.
LASERS – IT’S ROLE IN PERIODONTAL REGENERATIONhiij
The use of lasers has evolved as clinical experience along with scientific investigation. The dental
lasers of today have benefited from decades of laser research and have their basis in certain
theories from the field of quantum mechanics. When used efficaciously and ethically, lasers are an
exceptional modality of treatment for many clinical conditions that dental specialists treat on a
daily basis. The concept of using lasers for the treatment of periodontal disease elicits very strong
reactions from all sides of spectrum. Evidence suggests that lasers are useful as an adjunct or
alternative to traditional approaches in periodontal therapy. Future direction of lasers would be
towards a minimally invasive regenerative procedures along with laser assisted calculus detection
systems using laser fluorescence that is optical coherence tomography and a laser system which
selectively and completely removes the plaque and calculus that is under development. With recent
advances and development of wide range of laser wavelengths, different instrument designs and
different delivery systems, the purpose of this review is to determine the application and current
concept of lasers in the regeneration of periodontal tissues.
LASERS – IT’S ROLE IN PERIODONTAL REGENERATIONhiij
The use of lasers has evolved as clinical experience along with scientific investigation. The dental lasers of today have benefited from decades of laser research and have their basis in certain theories from the field of quantum mechanics. When used efficaciously and ethically, lasers are an exceptional modality of treatment for many clinical conditions that dental specialists treat on a daily basis. The concept of using lasers for the treatment of periodontal disease elicits very strong reactions from all sides of spectrum. Evidence suggests that lasers are useful as an adjunct or alternative to traditional approaches in periodontal therapy. Future direction of lasers would be towards a minimally invasive regenerative procedures along with laser assisted calculus detection systems using laser fluorescence that is optical coherence tomography and a laser system which selectively and completely removes the plaque and calculus that is under development. With recent advances and development of wide range of laser wavelengths, different instrument designs and different delivery systems, the purpose of this review is to determine the application and current concept of lasers in the regeneration of periodontal tissues.
This document provides an overview of lasers used in dentistry, including their history, mechanisms of action, applications, and safety measures. It discusses how lasers were first developed in the 1960s and introduced to dentistry in the 1990s. The main types of lasers used include CO2, Nd:YAG, Er:YAG, and KTP lasers. Lasers can be used for both hard and soft tissue procedures, such as caries removal, gingivectomies, and lesion removal, with advantages like reduced pain, bleeding, and recovery time compared to traditional techniques. Safety precautions must be followed when using lasers to protect patients and operators.
The document discusses the uses of lasers in dentistry. Lasers emit light through stimulated emission and can treat small, targeted areas without damaging surrounding tissues. They are used for hard tissue procedures like caries removal and bone contouring, as well as soft tissue procedures like biopsy, lesion removal, and gum surgery. Lasers can also reduce pain, minimize bleeding and swelling, and sterilize the treatment area. While lasers have advantages, traditional drills are still sometimes needed and lasers do not eliminate the need for anesthesia.
Lasers have various applications in prosthodontics including gingival retraction, crown lengthening, edentulous site preparation, osseous recontouring, soft tissue management, and removable prosthodontics. Different lasers such as diode, Nd:YAG, Er:YAG, and CO2 lasers can be used depending on whether hard or soft tissue is being treated, with Er lasers able to recontour bone. Lasers provide benefits like precision, hemostasis, and improved tissue healing compared to traditional methods.
This document discusses lasers and high-speed technology used in dentistry. It provides information on different types of lasers, how they work, and their applications. It also outlines the evolution of rotary dental equipment from early hand-powered drills to modern high-speed air turbine handpieces that can spin up to 300,000 RPM. Lasers and high-speed equipment have improved dental procedures by making them faster, less uncomfortable for patients, and allowing for more precise treatment.
The document discusses lasers used in dentistry. It begins with an introduction to lasers and their history in dentistry. Key topics covered include the mechanism of action of lasers, common dental laser therapies, and safety measures when using lasers. Examples are provided of how different types of lasers like CO2, Nd:YAG, and diode lasers are used for both soft tissue and hard tissue procedures in dentistry.
The use of lasers in dentistry, particularly in periodontics and peri-implant diseases, is becoming
increasingly common nowadays. Since their introduction in the late 20th century, they have revolutionized the
treatment options available for the management of periodontal disease. They allow the clinician to reach inside the
deeper pockets and help in reducing the bacterial load. They offer various advantages and have variations according
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Laser-Assisted Rhinoplasty_ The Future Generation Rhinoplasty Technique to Preserve Anatomy_ A Series of Patients Compared to Patients Undergoing Standard Open Rhinoplasty
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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
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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
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1. Soft and Hard Tissue
Management Using
Lasers in Esthetic
Restoration
Hugh D. Flax, DDS
a,b,
*
Laser technology has become preeminent in the evolution of appearance enhance-
ments. Dentistry has seen a huge breakthrough with the introduction of a combination
hard-soft tissue erbium wavelength. The conservative nature of this technique has
created a firm footing in the antiaging trend that is spanning the globe. Among the
many benefits of this technique are less invasive care and quicker healing responses.
Furthermore, these techniques can allow a cosmetic dentist to control gingival and
osseous contours with added artistry in the pursuit of esthetic dental principles and
more efficient use of patient time; thus raising customer service experiences.
In this article, conservative laser and cosmetic modalities are discussed that allows
a clinician to be more comfortable in buying a soft/hard tissue laser and also to more
quickly become adept with implementing these techniques.
HISTORICAL LASER BACKGROUND
In 1960, Theodore Maiman, a scientist with Hughes Aircraft Corporation, developed
the first working laser, emitting energy from a ruby crystal. This same technology
was applied to teeth by Dr Leon Goldman in 1965, causing painless surface crazing
of enamel. In the 1970s and 1980s, researchers attempted using other media, such
as CO2 (wavelength 10,600 nm), to better treat soft and hard dental structures. In
1987, the Food and Drug Administration (FDA) approved Myers and Myers’ Nd:YAG
The author has nothing to disclose.
Case reports 1 and 2 are reprinted from The Journal of Cosmetic Dentistry, 2010 American
Academy of Cosmetic Dentistry, All rights reserved, www.aacd.com; with permission.
a
American Academy of Cosmetic Dentistry, 402 West Wilson Street, Madison, WI 53703, USA
b
Private Practice, Atlanta, GA, USA
* 1100 Lake Hearn Drive, Suite 440, Atlanta, GA 30342.
E-mail address: h.flax@FlaxDental.com
KEYWORDS
Lasers Cosmetic dentistry Minimally invasive
Closed flap gum lifts
Dent Clin N Am 55 (2011) 383–402
doi:10.1016/j.cden.2011.01.008 dental.theclinics.com
0011-8532/11/$ – see front matter Ó 2011 Elsevier Inc. All rights reserved.
2. laser for commercial purposes to treat dental soft tissues.1
Three years later, the Kavo
Key Laser (Kaltenbach and Voight GmbH and Co, Biberach/ Ris, Germany) introduced
successful hard tissue treatment to German dentistry using an erbium:yttrium-
aluminium-garnet system (ER:YAG, wavelength 2940 nm). It was not until 1997 that
the FDA cleared use of this breakthrough in the United States for caries removal, cavity
preparation, and tooth conditioning. With the introduction of the ErCr:YSGG wave-
length (erbium, chromium: yttrium-scandium-gallium-garnet, 2780 nm), dentists had
the ability to precisely alter bone and dental hard tissues, as well as perform some
minor soft tissue modifications.2
A visual perspective of the many choices in laser
wavelengths is shown in Fig. 1.
BIOLOGIC MECHANISMS AND ADVANTAGES OF LASERS
Laser light can have many interactions with their target tissues. Because dental tissues
have complex compositions, the light is affected by the pigmentation and water
content, as well as the wavelength and mode of emission of the light. As a rule of
thumb, wavelengths 1000 nm or shorter are well absorbed by darker tissues and
hemoglobin. Furthermore, those wavelengths longer than 1000 nm tend to interact
well with water and hydroxyapatite, found in bone and tooth structures. Table 1
summarizes this wavelength absorption. It is important to remember that although
therapeutic effects are optimized by following these characteristics, the critical issues
in treatment are how easily the light can be delivered to the tissue, any potential for
necrosis, and the goals of treatment.
The advantages of lasers when properly used by well-trained clinicians (who under-
stand physics in laser usage) are the following3
:
Ability to seal blood vessels, creating a more bloodless field and decreased need
for sutures
Seal lymphatic vessels, decreasing postoperative swelling and scarring
Reduced mechanical trauma
Instant sterilization of the surgical site that can be helpful in operative procedures
and surgical care, including implant placement and rescue4
Fig. 1. Full spectrum of wavelengths in the medical field.
Flax384
3. Reduced bacteremia
Minimal postoperative discomfort.
Taking advantage of these benefits is huge clinically. Furthermore, patients prosper
from decreased fears of discomfort and postprocedure complications, and the added
precision minimizes the invasiveness of procedures. Undoubtedly, these advantages
clearly improve the perception and marketability of a dental practice, both by retaining
and attracting patients and staff.
The mechanism of action for laser treatment of hard tissues with erbium lasers is the
rapid subsurface expansion of the interstitially trapped water within the mineral
substrate that causes a massive volume expansion leading to microexplosions in
the surrounding tissues. Using water coolant and short pulse duration minimizes the
heat transfer to the tooth.2,5
Soft tissue procedures, such as incision, contouring, abla-
tion, and hemostasis, are performed better at other wavelengths, such as that emitted
by the diode (wavelength 812–980 nm). However, by adjusting the power density (the
relationship of the wattage and focal distance of the laser beam, defined as W/cm2
),
erbium lasers can still be used as a multipurpose modality with same microexplosion
mechanism as hard tissue. The difference is that there is more of a “shaving” or “plan-
ning” of soft tissue than the deeper absorbed dedicated soft tissue laser.6
Although lasers are less traumatic and more comfortable, it has also been found that
the application to tooth structure has allowed “radiation scattered in enamel and dentin
to be entrapped by these natural waveguides and transported to the pulp chamber.”7
It
has been postulated that there is a shift in pain fiber sensitivity with a reduction in the
action of the sodium-potassium pump at the cellular level, thereby slowing or even stop-
ping nerve conduction in the pulpal tissues long enough to more comfortably ablate
enamel and dentin without the use of anesthesia in most cases.8
Furthermore, Glockner
and colleagues9
reported a decrease in pulpal temperature and thermal damage from
37
C to between 25
C and 30
C after a few seconds of erbium laser exposure.
One area of great debate is the reported increase in bond strengths when using
erbium lasers as a result of the microcratering of enamel and dentin.10,11
Although
the roughening of the surface may increase the surface area and physical retention,
it is still prudent to continue chemical etching until definitive studies are conclusive.
CAVITY TREATMENT WITH LASERS
Because of the aforementioned advantages of the laser modality, treatment of carious
lesions is improved. Using conservative microdentistry principles formulated by
Table 1
Wavelength absorption characteristics of dental lasers
Laser Wavelength (nm) Absorbant
Alexandrite (2x) 377 Calculus
Argon 488 515 Hemoglobin, melanin, resin catalyst
HeNe 632 Melanin
Diode 810–980 Melanin, water
Nd:YAG 1064 Melanin, water, dentin
Ho:YAG 2120 Water, dentin
ErCr:YSGG 2780 Water, hydroxyapatite
Er:YAG 2940 Water, hydroxyapatite
CO2 10,600 Hydroxyapatite, water
Soft and Hard Tissue Management 385
4. Knight12
and Millicich and Rainey,13
it is important to follow a risk management
protocol advocated by CAMBRA (CAries Management By Risk Assessment)14
as
follows:
Diagnose before treatment using DIAGNOdent (KaVo Dental, Charlotte, NC,
USA) readings and magnification to visualize risky anatomy, as well as perform
CariFree (Oral BioTech, Albany, OR, USA) testing and treatment to help reminer-
alize and possibly reverse suspicious borderline lesions that are close to the
threshold measurement of 20.15
Make treatment decisions based on risk.
Use caries detection die when appropriate so that defective hard tissue is selec-
tively removed by lasers or air abrasion, and preserve the peripheral rim of
enamel (Fig. 2).
A sandwich technique that uses glass ionomer composites (GICs) is advanta-
geous to give a predictable seal because of minimized shrinkage and a reminer-
alization effect when restoring decayed lesions (Fig. 3).
After managing the patient’s expectations for care (ie, discussing the laser experi-
ence), an Isolite (Isolite Systems, Santa Barbara, CA) is applied to improve isolation
in a comfortable manner. A ninety second “laser analgesia” application is performed
with laser tip (usually a 600 mm glass quartz tip) defocused from and perpendicular
to the enamel surface at a height of 10 mm, with a setting 4.5 W, 60% water, 30%
air. When the analgesia cycle is completed, the laser tip is brought with a 0.5–1.0
mm of the enamel and pointed at a buccal or lingual angle parallel to the enamel
rods to improve cutting efficiency on the occlusal surface (a perpendicular approach
works fine on smooth surface lesions, Fig. 4). Carefully dissecting and ablating the
decalcified and carious areas along the grooves and trying to preserve the triangular
ridges, the enamel is cleansed at this setting, while the less mineralized, more carious
dentin is ablated at 3.5 W, 60% water, 30% air. Since the laser tip is only end cutting,
any small areas undermining enamel can be removed with spoons or a sharp slow
speed round bur, that patient tends not to object. Any white “cratering” caused on
the cavosurface or esthetic areas should be smoothed with a medium diamond to
avoid any shine through in the future bonding. When the decay is removed, the tooth
is restored using a “closed sandwich technique”-with the GIC sealing/replacing the
dentin and protected from oral fluids by composite that is acting as an enamel
replacement.16
Composite materials are chosen based on the remaining tooth
Fig. 2. The peripheral rim of enamel (red) acts like a bicycle rim to maintain biomechanical
strength of the tooth, where the triangular ridges act like the spokes.
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5. Fig. 3. Treatment of the occlusal decay with a laser. Unlike typical operative approaches to
breaking through the enamel “roof” over the decalcified enamel and dentin, the laser cuts
more efficiently by using an angulation parallel to the enamel rods versus the standard
perpendicular to the enamel surface. Smooth surface caries can be treated in a more
customary manner.
Fig. 4. The closed sandwich technique (labeled) allows for a decreased polymerization
shrinkage and direction remineralization of the dentin by glass ionomer.
Soft and Hard Tissue Management 387
6. structure available, particularly in the critical biomechanical areas of the peripheral rim
of enamel and triangular ridges.
A video (MMC 1) of this technique is provided.
Supplementary data. The following are the Supplementary data related to this
article:
Supplementary data related to this article can be found online at doi: 10.1016/j.
cden.2011.01.008.
LASER COSMETIC SMILE ENHANCEMENT
Charles Darwin said that “Beauty is the association of many complex associations.”
Undoubtedly, this theory can be applied to the art and science of esthetic dentistry.
Harmony of function, biology, and appearance is paramount in creating long-term
results for patients. Fortunately, the efforts of many pioneers such as Pankey and
Mann,17
Dawson,18
and Lee19
have allowed contemporaries to achieve bioesthetic
results more predictably.
One of the more challenging aspects of these multiple associations is gingival
symmetry and health. Rufenacht20
and Chiche21
have detailed the artistic compo-
nents (contours, proportions) of a memorable smile. Dolt and Robbins22
describe
a differential diagnostic process for recognizing, diagnosing, and treating esthetic
dilemmas in gingival/tooth architecture. The classic study by Kois23
defined the
anatomic relationships of the dentogingival complex (DGC). Maintaining biologic width
is predictable when measured clinically at 3 mm direct facially and at 3 mm to 5 mm
interproximally from the free gingival margin to the osseous crest. Ultimately, the
gingival margin must mimic the osseous curvatures to maintain a healthy gingival
restorative interface.
The study by Wang24
showed that osseous crown lengthening with ErCr:YSGG
laser could be completed without laying a flap, suturing, or damaging the bone.
This finding is further supported in the literature by Rizoiu25
who found that the thermal
coagulative results and ablation qualities were similar to those created by a dental bur.
From a patient perspective, the decreased need for suturing and shorter healing times
should definitely increase case acceptance to complement the growing demand for
esthetic dentistry. In addition, the restorative dentist can have increased artistic
control of the periodontal framework.
SMILE DESIGN CONSIDERATIONS
There are many books and articles that cover this topic well. Calamia and colleagues26
have created an evaluation form that covers the details in a systematic and thorough
manner for data collection and diagnostic planning. Furthermore, using the American
Academy of Cosmetic Dentistry series of photography is critical for collaborative
planning27
(Fig. 5).26
Although smile design is subjective, these are some key areas to focus on:
The golden proportion of anterior teeth from canine to canine should be
considered.
The width to length ratio of central incisors should be considered. Because
the centrals are the main starting point for smile design, the incisal edge
position is most critical in facially generated planning. However, if they are
too square or elongated, the disproportion can disrupt the esthetics of
a smile. The recommended width to length ratio is 0.75:0.80. If a periodontal
Flax388
7. Fig. 5. Organizing data in smile design helps improve predictability in the final result, as well as document information medicolegally when dealing
with subjective outcomes. To avail this form, e-mail Dr John R. Calamia at jrc1@nyu.edu.
SoftandHardTissueManagement389
8. solution is appropriate, erbium laser treatment allows for soft and hard tissue
adjustments in proportion.
The incisal plane is ideally suited to a horizontal orientation, often parallel to the
interpupillary line (unless the eyes are canted). The edges should also follow
a curve created by a symmetrically curved lower lip. Furthermore, the posterior
occlusal plane should blend into the incisal orientation to avoid a tilt in vertical
orientation, the buccal corridor of a smile. A corollary to this is that gingival plane
should be similar to the incisal plane. Failure to do this creates a divergent
tension between the soft and hard tissues, creating a “crooked smile” instead
of one that is beautiful and believable. A solution to this is to use 2 “stick bites”
that orient the incisal edges in diagnostic planning/wax-ups and one for focusing
on gingival height alignment during periodontal surgery.
Midline placement can be affected horizontally by skeletal orientation and tooth
position. However, vertical canting must be perpendicular to the incisal plane.
Gingivally, a more attractive smile demonstrates symmetry on both sides of the
midline (Fig. 6). Furthermore, as a rule of thumb, the central incisor and canine
gingival levels are the same, although the lateral incisor soft tissue crest is
approximately 1 mm shorter.
Geometric progressions take place when viewing an ideal smile. According to
Rufenacht,20
there should be a progression of acute to obtuse angles in the
embrasure forms between teeth when moving anteriorly to posteriorly. This
progression occurs in the incisal and the gingival areas, respectively (Fig. 7).
Creating similarities in gingival curvatures and zeniths create attractive smiles
that look natural.
CASE REPORT 1
A 38-year-old female patient presented for correction of what she termed her “tilted
smile” (Fig. 8). Given that she was starting a new sales career, she also desired to
make her teeth brighter and the smile much broader. Furthermore, while trying to
balance the responsibilities of motherhood, the patient shared her frustration with
previous dental consultations that focused only on orthodontic or surgical solutions
without considering a more practical approach that fit her lifestyle. Her smile analysis
established a collapse of the bicuspids in the buccal corridor. Furthermore, the axial
inclinations and irregular gingival margins and incisal edges created a downward tilt
to the patient’s right because of tooth positioning. Close-up imaging showed healthy
Fig. 6. Gingival symmetry from a labial view. Notice that the plane follows the curvature of
the upper lip.
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9. gingival tissues as well as a weakened right central incisor from a large composite
(Fig. 9).
Full clinical examination with radiographs and mounted models revealed the
following:
Biomechanically, most of the patient’s teeth remained strong because of previ-
ously received dental care.
The periodontal condition of the soft and hard tissues was healthy.
Occlusally, load testing was normal (after muscle relaxation) and there was
obvious centric relation–centric occlusion anterior-vertical slide because of
a premature contact at tooth number 30.
Esthetically, the width-length ratio of upper centrals was 1.20, far from the ideal
range of 0.75 to 1.00. Tooth shade was a Vita A2.
Fig. 8. Visualizing the entire oral-facial composition helps diagnose the less harmonious
features of the smile.
Fig. 7. A geometric progression from acute to obtuse angles occurring in the incisal and
gingival embrasures in a smile when following the teeth in an anterior-posterior direction.
This architecture was created immediately after laser sculpting of the soft tissue before ad-
justing the osseous contour via a closed flap approach.
Soft and Hard Tissue Management 391
10. Given the patient’s previous history and her desire for minimally invasive dental
care, a conservative strategy was devised that allows the correction of the problems
and causes in a multitasking manner:
Muscle and bite therapy with a Tanner appliance followed by careful equilibration
aided by the T-scan (Tekscan System, South Boston, MA, USA)
Three-dimensional wax-up using a Stratos articulator (Ivoclar-Vivadent,
Amherst, NY, USA) Fig. 10
Home bleaching of the lower teeth with Opalescence 15% (Ultradent, South
Jordan, UT, USA)
Closed-flap periodontal modification with the Waterlase ErCr:YSGG (Biolase
Technology, San Clemente, CA, USA) while the first 3 items were being accom-
plished. The combination of these 4 steps allowed to save time and also to care-
fully monitor the progress on a weekly basis
Definitive restorative care with porcelain veneers and a crown on tooth number 8.
At the initial closed periodontal lift, the ErCr:YSGG laser was used in 3 modes (ie,
gingival sculpting, osseous recontouring, and biostimulation). Before anesthesia, the
desired framework was planned and outlined using a fine marker (Fig. 11). Further-
more, a stick bite was used to not only establish an ideal incisal plane but also properly
align the gingival margins (Fig. 12).
With the settings of 2 W, 20 pulses per second, 20% air, and 20% water, a G-6 tip
(600 mm in diameter) was used to shape the labial gingival region. No tissue necrosis or
significant bleeding occurred as a result of using the laser’s relatively lower settings.
Fig. 9. Close-up photography is essential to planning periorestorative care.
Fig. 10. A mounted diagnostic wax-up is a critical road map to planning a realistic result.
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11. All areas were “sounded” using a periodontal probe (Fig. 13). At the facial margins,
osseous sculpting required great precision to maintain a 3-mm DGC. A specially
tapered T4 tip (400 micrometers in diameter) was used at a 25% higher wattage of
2.5 W. Before usage, the tip was measured and marked to 3 mm to maintain controlled
adjustments within the gingival sulcus during periodontal probing movement of the tip
(Fig. 14). The resection was smoothed with a 7/8 curette (Fig. 15). Using low-level
laser therapy, at a setting of 0.25 W, a decrease in the release of inflammatory hista-
mine and increased fibroblasts for junctional epithelial growth was achieved by
“frosting” the outer epithelium and injection sites (Fig. 16). There was immediate
improvement of the geometric progression of gingival embrasures. The patient was
placed on a vigorous homecare regimen (Oxygel; Oxyfresh, Coeur d’Alene, ID, USA)
and closely monitored for a month while occlusal therapy and bleaching procedures
were performed.
Four weeks postsurgically, the tissues were healed and restorative care could be
initiated. The patient’s teeth were prepared for veneers and a crown with mild soft
tissue reshaping to fine-tune the previous treatment. After impressions and bite regis-
trations, prototype provisionals (eg, Luxatemp Plus; Zenith DMG, Englewood, NJ,
USA) were fabricated using the “shrink-wrap” technique.
The patient was sent home with the same home care regimen and to “test-drive” her
new smile for esthetics and function. She returned in a week to perfect the prototype’s
occlusion, color, and morphology. Photos and models were sent to the laboratory
providing a final blueprint for the porcelain restorations (Fig. 17).
Four weeks later, the provisionals and cement were carefully removed from the
teeth. All restorations were tried in individually and as a group to verify fit and esthetics.
Fig. 11. Outlining the desired gingival margins, before anesthesia, communicates a blue-
print to the patient and restorative team.
Fig. 12. A stick bite helps verify that the incisal and gingival planes are parallel.
Soft and Hard Tissue Management 393
12. Fig. 13. Sounding to bone after atraumatic soft tissue sculpting.
Fig. 14. To modify the bone, a very tight up and down movement is performed using the
black mark as a reference after the gingival scallop.
Fig. 15. A curette helps clean and smooth the sulcus of any debris.
Fig. 16. A “laser bandage” was placed along the area of treatment to improve the healing
time and decrease patient discomfort.
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13. After the patient’s enthusiastic approval, the porcelain was bonded using the 2 Â 2
technique and isolation. Margins were smoothed and polished, and occlusion was
balanced with the T-scan. A protective nighttime appliance was created to add
longevity to the rehabilitation. The patient felt that the results exceeded her expecta-
tions (Figs. 18 and 19).
Use of a hard/soft tissue laser is a wonderful adjunctive tool for cosmetic and restor-
ative dentistry. The above case demonstrates that this type of laser technology gives
dentists the ability to make significant soft and hard tissue changes while being mini-
mally invasive. These changes not only improve the final esthetic outcome of the case
but also provide the physiologic functional parameters required for successful
dentistry.
CASE REPORT 2
A 62-year-old female patient presented for correction of what she termed her
“Spongebob smile” (Figs. 20 and 21). Clinical photographs demonstrated how
Fig. 17. Detailed information helps the laboratory translate clinical results to the porcelain
restorations.
Fig. 18. Great improvement in esthetics boosted this patient’s self-confidence and pride in
her dental care.
Soft and Hard Tissue Management 395
14. Fig. 19. Ideal proportions and emergence profiles create long-term healthy tissues and
bioesthetics.
Fig. 20. The large midline was a major detriment to this patient’s appearance.
Fig. 21. Broad widths of the gingival papillae created an unfavorable framework to create
more harmonious esthetics.
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15. self-conscious the patient was about her smile’s appearance. A large midline dia-
stema that measured approximately 4 mm was the centerpiece of a dentition that
had missing maxillary canines and discolored metal-ceramic restorations that had
been placed without a master plan for complete dental health and appearance.
Consequently, the patient was frustrated that her previous care would prevent her
from achieving an improved smile. Further challenges included the presence of
a deep overbite and a thick deep labial frenum. Other considerations were budgeting
and time constraints, as well as a desire to use a conservative approach.
Diastema closure is an art form that involves not only the repositioning of proximal
surfaces but also integrating the gingival interface and occlusion to create ideal
proportions and natural contours that can be easily cleansed. Specialty referral was
ruled out by the patient because of the aforementioned concerns. A plan was, there-
fore, devised to laser sculpt the soft and hard tissue to create an external framework to
train the gingival (first stage) and eventually place porcelain restorations from teeth
number 4 through teeth number 14 (second stage). These new contours would be
determined with the aid of a mounted diagnostic wax-up (Fig. 22). Because the
patient’s time was at a minimum, whitening and occlusal procedures were also per-
formed during the first stage of periodontal-restorative procedures.
At the initial closed periodontal lift, a Waterlase ErCr:YSGG laser was used in 3
modes (ie, gingival sculpting, osseous recontouring and smoothing, and frenectomy).
The desired framework was planned and outlined using a fine marker, and a G-6 tip
was subsequently used to shape the gingival region. No tissue necrosis or significant
bleeding occurred as a result of using the laser’s relatively lower settings. A flowable
composite was then cemented along the mesial aspects of teeth numbers 8 and 9.
After smoothing with a “safe end” bur (H135TDF; Axis Dental, Irving, TX, USA), a solid
matrix was created to mold the midline papilla (Fig. 23). Osseous sculpting required
great precision to maintain a 3-mm DGC. A specially tapered T4 tip was used at
a higher wattage of 2.5 W. Before usage, the tip was measured and marked to 3
mm to maintain controlled adjustments within the gingival sulcus during a machine
stitch movement of the tip. The resection was smoothed with a 7/8 curette. The fre-
nectomy was cleanly performed at the soft tissue setting, causing a release of the
midline papilla and great freedom of the upper lip (Fig. 24). At a setting of 0.25 W, bio-
stimulation of the outer epithelium helped to decrease the release of histamine and
increased fibroblasts for junctional epithelial growth. The patient was placed on
a vigorous homecare regimen (Oxygel) and closely monitored for a month while
occlusal therapy procedures were performed.
Fig. 22. A mounted diagnostic wax-up is a critical road map to planning a realistic result.
Soft and Hard Tissue Management 397
16. At 4 weeks postoperatively, the tissues were healed and restorative care was initi-
ated. Using the diagnostic wax-up as a guide, the width of the midline papilla was
determined and modified horizontally to match the blueprint (Figs. 25 and 26). The
patient’s teeth were prepared for veneers/crowns, and mild soft tissue reshaping
was performed. After impressions and bite registrations, prototype provisionals
(Luxatemp Plus) were fabricated. Improvement and acute angles for the papillae,
which are a reflection of the ideal geometric esthetic progression from anterior to
posterior, are observed (Fig. 27).
The patient was provisionalized for 30 days. Minimal modifications were necessary
to improve the patient’s appearance and bite. Measurements and photos were sent to
the ceramist. Using the temporary model, a labioincisal matrix was created to maintain
a consistent aesthetic and functional relationship (Fig. 28).
The restorations were returned from the laboratory preetched and silanated. They
were inspected for contour and fit not only labially for aesthetics but also occlusally
for hygiene purposes (Fig. 29). Using isolation procedures, the Authentic porcelain
(Microstar Dental, Lawrenceville, GA, USA) was bonded using translucent resin
cement (eg, Variolink II, Ivoclar Vivadent, Amherst, NY, USA). The patient was ecstatic
about the aesthetic results achieved through the periorestorative procedure (Figs. 30
and 31).
Fig. 23. After the soft tissue was laser sculpted, flowable composite was placed and polished
to train the contour of the proximal surfaces of the midline papilla.
Fig. 24. A frenectomy was performed at a soft tissue setting after the osseous sculpting was
completed. Note the minimal trauma and bleeding after use of the laser.
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17. Fig. 25. The width of the midline papilla is critical to achieving the planned geometric
progression from anterior to posterior teeth.
Fig. 26. The midline papilla is checked intraorally. Note that the margins are placed subgin-
givally to optimize the emergence profile of the porcelain.
Fig. 27. Provisionals are test-driven to fine-tune function and the patient’s esthetic desires.
Soft and Hard Tissue Management 399
18. Fig. 28. Mounting of the approved prototypes allows the laboratory to create a labial incisal
silicon matrix.
Fig. 29. Natural incisal thicknesses and proximal embrasures promote better function and
health.
Fig. 30. Great improvement in esthetics made this patient’s smile brighter.
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19. SUMMARY
With expanding emphasis on minimally invasive care (eg, Botox, mesotherapy),
dentistry has as amazing an ally in laser technology. The literature demonstrating
the health benefits is being augmented with the cosmetic advantages as well. Care-
fully using the hard and soft tissue lasers gives cosmetic dentistry a patient friendly
tool to predictably and comfortably compliment the many advances in smile design.
These are truly exciting times for patients and professionals alike!
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