Definitions
Pre-treatment assessment and management
Principles of pontic design
Specifications for pontic design
Classifications
Individual design according to Rosenstiel
Other type of pontics
Split pontic technique
Multiple hygiene pontics
Free-end pontics
Bonded pontics
Fiber reinforced composite resin pontics
Use of Natural Tooth as a Pontic
Post operative care
Conclusion
Non rigid connectors in fixed prosthesis / 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.
This document discusses concepts and techniques related to occlusal rehabilitation. It covers topics such as centric relation, anterior guidance, restoring anterior and posterior teeth, and solving various occlusion problems. The Pankey-Mann-Schuyler philosophy advocates establishing stable centric stops, proper anterior guidance in harmony with jaw movements, disclusion of posterior teeth in protrusion, and non-interference of teeth during lateral excursions. The document provides guidelines for determining tooth contours and positions to achieve optimal function, stability, and aesthetics.
This document discusses attachments used in prosthodontics. It begins with an introduction to attachments, defining them as mechanical devices used to retain and stabilize prostheses. The document then covers the history, classification, indications, disadvantages, and selection of attachments. It discusses both intracoronal and extracoronal attachments. In summary, the document provides an overview of attachments, their uses in prosthodontics, and factors to consider in selecting the appropriate attachment.
Occlusal equilibration is a procedure to precisely alter the occlusal surfaces of teeth to improve the contact pattern. It involves selectively grinding tooth structures that interfere with terminal hinge axis closure, lateral excursion, and protrusive movement. Common tools used include paste, spray or paint to identify contact points requiring adjustment. The basic rules of selective grinding include narrowing cusp tips before reshaping fossae, and adjusting the inclines of upper and lower teeth in opposing directions depending on the path of slide. Occlusal errors in complete dentures can be caused by incorrect registration of the retruded contact position or irregularities during setting and processing of the teeth.
Gingival finish lines in fixed partial denture(FPD) with referencesNAMITHA ANAND
1) The document discusses different types of finish lines (margins) that can be used in fixed prosthodontic treatments, including subgingival, equigingival, and supragingival margin placements.
2) It describes various margin designs such as chamfer, shoulder, knife edge, and their advantages and disadvantages. The chamfer is preferred for metal restorations due to its distinct shape and ability to distribute stresses.
3) Factors like preservation of tooth structure, retention, resistance to fracture, and health of the surrounding tissues must be considered when determining the location and design of finish lines. Subgingival margins can cause more inflammation and are best avoided unless necessary for esthetics or contour.
This document discusses the prosthodontic management of endodontically treated teeth through post and core restoration. It provides background on the historical development of post and core systems. It describes the characteristics of endodontically treated teeth and outlines the principles and methodology for post and core treatment, including post selection, preparation, and fabrication. Key factors that influence post and core treatment like remaining tooth structure, ferrule effect, stresses, and materials are discussed. The document serves as a guide for proper prosthodontic management of teeth requiring post and core restoration.
This document discusses different types of connectors used in fixed partial dentures (FPDs). It describes rigid connectors that do not allow movement, including cast, soldered, loop, and rigidly-joined multi-unit FPD connectors. It also describes non-rigid connectors that allow limited movement, such as tenon-mortise, split pontic, and cross-pin/wing connectors, which are indicated for situations requiring some flexibility like pier abutments. Special considerations for pier abutments, cantilever FPDs, and replacing canines are also covered.
Provisional restoration in fixed partial denturebhuvanesh4668
This document discusses various techniques for fabricating provisional restorations. It begins by defining provisional restorations and outlining their key requirements and purposes. It then describes common provisional luting materials and different types of provisional restorations that can be used. The remainder of the document focuses on detailing specific techniques for fabricating provisional restorations, including direct fabrication techniques, indirect techniques using impressions or templates, and the use of prefabricated crowns. Key steps are outlined for a variety of techniques.
Non rigid connectors in fixed prosthesis / 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.
This document discusses concepts and techniques related to occlusal rehabilitation. It covers topics such as centric relation, anterior guidance, restoring anterior and posterior teeth, and solving various occlusion problems. The Pankey-Mann-Schuyler philosophy advocates establishing stable centric stops, proper anterior guidance in harmony with jaw movements, disclusion of posterior teeth in protrusion, and non-interference of teeth during lateral excursions. The document provides guidelines for determining tooth contours and positions to achieve optimal function, stability, and aesthetics.
This document discusses attachments used in prosthodontics. It begins with an introduction to attachments, defining them as mechanical devices used to retain and stabilize prostheses. The document then covers the history, classification, indications, disadvantages, and selection of attachments. It discusses both intracoronal and extracoronal attachments. In summary, the document provides an overview of attachments, their uses in prosthodontics, and factors to consider in selecting the appropriate attachment.
Occlusal equilibration is a procedure to precisely alter the occlusal surfaces of teeth to improve the contact pattern. It involves selectively grinding tooth structures that interfere with terminal hinge axis closure, lateral excursion, and protrusive movement. Common tools used include paste, spray or paint to identify contact points requiring adjustment. The basic rules of selective grinding include narrowing cusp tips before reshaping fossae, and adjusting the inclines of upper and lower teeth in opposing directions depending on the path of slide. Occlusal errors in complete dentures can be caused by incorrect registration of the retruded contact position or irregularities during setting and processing of the teeth.
Gingival finish lines in fixed partial denture(FPD) with referencesNAMITHA ANAND
1) The document discusses different types of finish lines (margins) that can be used in fixed prosthodontic treatments, including subgingival, equigingival, and supragingival margin placements.
2) It describes various margin designs such as chamfer, shoulder, knife edge, and their advantages and disadvantages. The chamfer is preferred for metal restorations due to its distinct shape and ability to distribute stresses.
3) Factors like preservation of tooth structure, retention, resistance to fracture, and health of the surrounding tissues must be considered when determining the location and design of finish lines. Subgingival margins can cause more inflammation and are best avoided unless necessary for esthetics or contour.
This document discusses the prosthodontic management of endodontically treated teeth through post and core restoration. It provides background on the historical development of post and core systems. It describes the characteristics of endodontically treated teeth and outlines the principles and methodology for post and core treatment, including post selection, preparation, and fabrication. Key factors that influence post and core treatment like remaining tooth structure, ferrule effect, stresses, and materials are discussed. The document serves as a guide for proper prosthodontic management of teeth requiring post and core restoration.
This document discusses different types of connectors used in fixed partial dentures (FPDs). It describes rigid connectors that do not allow movement, including cast, soldered, loop, and rigidly-joined multi-unit FPD connectors. It also describes non-rigid connectors that allow limited movement, such as tenon-mortise, split pontic, and cross-pin/wing connectors, which are indicated for situations requiring some flexibility like pier abutments. Special considerations for pier abutments, cantilever FPDs, and replacing canines are also covered.
Provisional restoration in fixed partial denturebhuvanesh4668
This document discusses various techniques for fabricating provisional restorations. It begins by defining provisional restorations and outlining their key requirements and purposes. It then describes common provisional luting materials and different types of provisional restorations that can be used. The remainder of the document focuses on detailing specific techniques for fabricating provisional restorations, including direct fabrication techniques, indirect techniques using impressions or templates, and the use of prefabricated crowns. Key steps are outlined for a variety of techniques.
1. The functionally generated pathway technique involves recording the paths of tooth movement during excursive jaw motions using wax or other materials.
2. This recording is used to develop the occlusal morphology for dental restorations like crowns, ensuring optimal occlusion during all jaw motions.
3. Studies have found that the functionally generated pathway technique results in restorations with better functional articulation compared to conventional single casting techniques, with less adjustment needed and higher patient satisfaction.
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
Abutment & Its Selection In Fixed Partial DentureSelf employed
This document discusses factors to consider when selecting abutment teeth for fixed partial dentures (FPDs). It defines an abutment tooth and outlines how to assess potential abutments, including taking radiographs and evaluating crown morphology, root configuration, crown-to-root ratio, and other anatomical features. Good abutment teeth are vital with adequate bone and root support and crown structure to withstand forces from the FPD. Location, occlusion, tooth structure and root health must be optimized for successful force distribution from the prosthesis.
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.
This document provides an overview of occlusion concepts in fixed partial dentures. It discusses theories of occlusion such as Bonwill's triangular theory, the conical theory, and the spherical theory. It also covers classifications of occlusion by Dawson, concepts such as bilateral balanced occlusion and mutually protected occlusion, determinants of occlusion including condylar guidance and anterior guidance, and curves of occlusion like the curves of Spee and Wilson. The document is intended as a reference for understanding occlusion in prosthodontic treatments involving fixed partial dentures.
Attachments in removable partial prosthesishamide norouzi
An attachment is a connector used in removable and fixed prosthodontics that consists of two parts: a female part attached to a tooth, implant, or ridge that acts as a retainer, and a male part attached to the prosthesis. Attachments are classified based on their location, fabrication method, retention mechanism, and degree of movement allowed. Key factors to consider when selecting an attachment include the condition of the abutment teeth and ridge, space available, and the patient's dexterity. Common attachment types include intracoronal, extracoronal, stud, bar, and telescopic attachments.
The document discusses immediate dentures, which are dentures fabricated and inserted immediately following tooth extraction. It describes the different types of immediate dentures, including conventional/classic immediate dentures, interim immediate dentures, labial flange dentures, partial flange dentures, and flangeless/socketed dentures. The advantages of immediate dentures include maintaining a patient's appearance without teeth, providing a bandage effect to extraction sites, and allowing easier adaptation to dentures during healing. However, immediate dentures also present challenges like reduced retention from undercuts caused by remaining posterior teeth.
The document discusses various concepts of occlusion for fixed partial dentures, including bilaterally balanced occlusion, unilaterally balanced occlusion, and mutually protected occlusion. Bilaterally balanced occlusion aims for simultaneous contact on both sides but is difficult to achieve, while unilaterally balanced occlusion distributes forces to multiple teeth on the working side only. Mutually protected occlusion relies on anterior guidance to prevent posterior contact during excursive movements. The concepts vary in their distribution of forces and indications depending on a patient's needs.
This document provides an overview of surveying and surveying tools used in the process of designing removable partial dentures (RPDs). It discusses the history and development of surveying, types of surveyors, principles of surveying including survey lines and path of insertion. The document outlines the step-by-step survey process including orienting the cast, tilting, marking survey lines, measuring undercuts, identifying interferences, and tripoding the cast for future reference. Various surveying tools such as the analyzing rod, carbon marker, undercut gauges, and wax trimmers are also described.
This document discusses provisional restorations and their requirements. It defines provisional restorations as temporary restorations designed to enhance function and aesthetics until definitive treatment. Provisional restorations must meet biological, mechanical, and aesthetic requirements. Biologically, they must protect the pulp, maintain periodontal health, and provide positional stability. Mechanically, they must resist functional loads and removal forces. Aesthetically, they must match the tooth's color, shape, and texture. The document discusses various materials used for provisional restorations including acrylic resins, bis-acryl composites, and light-cured resins.
This document discusses different types of connectors used in fixed partial dentures (FPDs). It defines connectors and lists their requirements. Rigid connectors include cast, soldered, welded, and loop connectors. Non-rigid connectors involve dovetail, split pontic, cross pin, and wing connectors. Design considerations for connectors include hygiene, biomechanics, aesthetics, and strength. Common rigid connector fabrication methods and their pros and cons are outlined. Indications for different connector types depend on factors like abutment alignment and span length.
Prosthodontics - realeff relevance in complete dentureKIIT ,BHUBANESWAR
The document discusses the Realeff effect, which refers to the resiliency and compressibility of oral mucosa that complete dentures rest on. It affects all steps of complete denture fabrication from impressions to final insertion. Factors like tissue health, consistency, and age can influence the Realeff effect. Understanding this effect is important for denture stability and preventing trauma to supporting tissues during the denture fabrication process.
This document discusses functionally generated path occlusion, which is a technique for developing occlusion without using an articulator. It involves having the patient move their jaw through various motions while wax is placed on their teeth, capturing the path of jaw movement. This wax tracing is then used to create a stone cast, called a functional core, which reproduces the jaw motion. This core can be mounted along with the dental casts to fabricate restorations that align with the patient's natural jaw function. The document outlines the specific steps for using this technique to develop occlusion for fixed dental prosthetics.
This document outlines the planning sequence for designing removable partial dentures (RPDs). It begins with a diagnostic assessment and preliminary impressions to obtain diagnostic casts. The casts are then mounted in centric relation. The ideal RPD design is then drawn on paper, considering factors like abutment teeth, the dental arch, and occlusion. The design is surveyed on the study casts to determine the most advantageous path of insertion and withdrawal. The design is then revised and finalized. Key steps in the design process are discussed, including the use of rests, connectors, and different types of retainers for mandibular and maxillary designs. Issues to consider for each component are also outlined.
Centric relation is a controversial concept in dentistry that refers to the maxillomandibular relationship where the condyles are in their most anterior and superior position against the articular eminences, allowing purely rotary movement of the mandible. There have been many changes to the definition of centric relation over time as understanding has evolved. It is important for proper functioning and to develop centric occlusion in artificial dentures. However, accurately recording centric relation can be difficult due to various biological, psychological and mechanical factors that must be addressed. Common methods include using interocclusal records with or without central bearing devices as well as functional recording techniques.
This document discusses occlusion in removable partial dentures. It outlines several types of occlusion including static and dynamic occlusion. Desirable occlusal contacts are bilateral contacts of posterior teeth in centric occlusion. Methods for establishing occlusion include direct apposition of casts if enough teeth remain, interocclusal records with posterior teeth, or using occlusal rims. The functionally generated path method can also be used to develop a dynamic occlusion record without an articulator. Proper occlusion is important for the success, comfort and longevity of removable partial dentures.
1. A tooth supported overdenture is a removable partial or complete denture that covers and receives support from one or more remaining natural teeth or dental implants.
2. It provides advantages like ridge preservation, improved retention, stability and support compared to conventional complete dentures.
3. Tooth supported overdentures can be classified based on the type of abutment preparation (coping vs non-coping) and the timing of placement (immediate, interim or definitive).
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 provides an overview of pontic design in fixed partial dentures (FPDs). It discusses the definitions, principles, specifications, classifications, and types of pontic design. The principles of pontic design include biological, esthetic, and mechanical considerations. Pontics must be designed to maintain the residual ridge and abutment teeth, allow for oral hygiene, and withstand occlusal forces. Common classifications include those based on mucosal contact, materials used, and prefabricated designs. Individual pontic designs like the saddle, modified ridge lap, and ovate are also described.
1. The functionally generated pathway technique involves recording the paths of tooth movement during excursive jaw motions using wax or other materials.
2. This recording is used to develop the occlusal morphology for dental restorations like crowns, ensuring optimal occlusion during all jaw motions.
3. Studies have found that the functionally generated pathway technique results in restorations with better functional articulation compared to conventional single casting techniques, with less adjustment needed and higher patient satisfaction.
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
Abutment & Its Selection In Fixed Partial DentureSelf employed
This document discusses factors to consider when selecting abutment teeth for fixed partial dentures (FPDs). It defines an abutment tooth and outlines how to assess potential abutments, including taking radiographs and evaluating crown morphology, root configuration, crown-to-root ratio, and other anatomical features. Good abutment teeth are vital with adequate bone and root support and crown structure to withstand forces from the FPD. Location, occlusion, tooth structure and root health must be optimized for successful force distribution from the prosthesis.
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.
This document provides an overview of occlusion concepts in fixed partial dentures. It discusses theories of occlusion such as Bonwill's triangular theory, the conical theory, and the spherical theory. It also covers classifications of occlusion by Dawson, concepts such as bilateral balanced occlusion and mutually protected occlusion, determinants of occlusion including condylar guidance and anterior guidance, and curves of occlusion like the curves of Spee and Wilson. The document is intended as a reference for understanding occlusion in prosthodontic treatments involving fixed partial dentures.
Attachments in removable partial prosthesishamide norouzi
An attachment is a connector used in removable and fixed prosthodontics that consists of two parts: a female part attached to a tooth, implant, or ridge that acts as a retainer, and a male part attached to the prosthesis. Attachments are classified based on their location, fabrication method, retention mechanism, and degree of movement allowed. Key factors to consider when selecting an attachment include the condition of the abutment teeth and ridge, space available, and the patient's dexterity. Common attachment types include intracoronal, extracoronal, stud, bar, and telescopic attachments.
The document discusses immediate dentures, which are dentures fabricated and inserted immediately following tooth extraction. It describes the different types of immediate dentures, including conventional/classic immediate dentures, interim immediate dentures, labial flange dentures, partial flange dentures, and flangeless/socketed dentures. The advantages of immediate dentures include maintaining a patient's appearance without teeth, providing a bandage effect to extraction sites, and allowing easier adaptation to dentures during healing. However, immediate dentures also present challenges like reduced retention from undercuts caused by remaining posterior teeth.
The document discusses various concepts of occlusion for fixed partial dentures, including bilaterally balanced occlusion, unilaterally balanced occlusion, and mutually protected occlusion. Bilaterally balanced occlusion aims for simultaneous contact on both sides but is difficult to achieve, while unilaterally balanced occlusion distributes forces to multiple teeth on the working side only. Mutually protected occlusion relies on anterior guidance to prevent posterior contact during excursive movements. The concepts vary in their distribution of forces and indications depending on a patient's needs.
This document provides an overview of surveying and surveying tools used in the process of designing removable partial dentures (RPDs). It discusses the history and development of surveying, types of surveyors, principles of surveying including survey lines and path of insertion. The document outlines the step-by-step survey process including orienting the cast, tilting, marking survey lines, measuring undercuts, identifying interferences, and tripoding the cast for future reference. Various surveying tools such as the analyzing rod, carbon marker, undercut gauges, and wax trimmers are also described.
This document discusses provisional restorations and their requirements. It defines provisional restorations as temporary restorations designed to enhance function and aesthetics until definitive treatment. Provisional restorations must meet biological, mechanical, and aesthetic requirements. Biologically, they must protect the pulp, maintain periodontal health, and provide positional stability. Mechanically, they must resist functional loads and removal forces. Aesthetically, they must match the tooth's color, shape, and texture. The document discusses various materials used for provisional restorations including acrylic resins, bis-acryl composites, and light-cured resins.
This document discusses different types of connectors used in fixed partial dentures (FPDs). It defines connectors and lists their requirements. Rigid connectors include cast, soldered, welded, and loop connectors. Non-rigid connectors involve dovetail, split pontic, cross pin, and wing connectors. Design considerations for connectors include hygiene, biomechanics, aesthetics, and strength. Common rigid connector fabrication methods and their pros and cons are outlined. Indications for different connector types depend on factors like abutment alignment and span length.
Prosthodontics - realeff relevance in complete dentureKIIT ,BHUBANESWAR
The document discusses the Realeff effect, which refers to the resiliency and compressibility of oral mucosa that complete dentures rest on. It affects all steps of complete denture fabrication from impressions to final insertion. Factors like tissue health, consistency, and age can influence the Realeff effect. Understanding this effect is important for denture stability and preventing trauma to supporting tissues during the denture fabrication process.
This document discusses functionally generated path occlusion, which is a technique for developing occlusion without using an articulator. It involves having the patient move their jaw through various motions while wax is placed on their teeth, capturing the path of jaw movement. This wax tracing is then used to create a stone cast, called a functional core, which reproduces the jaw motion. This core can be mounted along with the dental casts to fabricate restorations that align with the patient's natural jaw function. The document outlines the specific steps for using this technique to develop occlusion for fixed dental prosthetics.
This document outlines the planning sequence for designing removable partial dentures (RPDs). It begins with a diagnostic assessment and preliminary impressions to obtain diagnostic casts. The casts are then mounted in centric relation. The ideal RPD design is then drawn on paper, considering factors like abutment teeth, the dental arch, and occlusion. The design is surveyed on the study casts to determine the most advantageous path of insertion and withdrawal. The design is then revised and finalized. Key steps in the design process are discussed, including the use of rests, connectors, and different types of retainers for mandibular and maxillary designs. Issues to consider for each component are also outlined.
Centric relation is a controversial concept in dentistry that refers to the maxillomandibular relationship where the condyles are in their most anterior and superior position against the articular eminences, allowing purely rotary movement of the mandible. There have been many changes to the definition of centric relation over time as understanding has evolved. It is important for proper functioning and to develop centric occlusion in artificial dentures. However, accurately recording centric relation can be difficult due to various biological, psychological and mechanical factors that must be addressed. Common methods include using interocclusal records with or without central bearing devices as well as functional recording techniques.
This document discusses occlusion in removable partial dentures. It outlines several types of occlusion including static and dynamic occlusion. Desirable occlusal contacts are bilateral contacts of posterior teeth in centric occlusion. Methods for establishing occlusion include direct apposition of casts if enough teeth remain, interocclusal records with posterior teeth, or using occlusal rims. The functionally generated path method can also be used to develop a dynamic occlusion record without an articulator. Proper occlusion is important for the success, comfort and longevity of removable partial dentures.
1. A tooth supported overdenture is a removable partial or complete denture that covers and receives support from one or more remaining natural teeth or dental implants.
2. It provides advantages like ridge preservation, improved retention, stability and support compared to conventional complete dentures.
3. Tooth supported overdentures can be classified based on the type of abutment preparation (coping vs non-coping) and the timing of placement (immediate, interim or definitive).
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 provides an overview of pontic design in fixed partial dentures (FPDs). It discusses the definitions, principles, specifications, classifications, and types of pontic design. The principles of pontic design include biological, esthetic, and mechanical considerations. Pontics must be designed to maintain the residual ridge and abutment teeth, allow for oral hygiene, and withstand occlusal forces. Common classifications include those based on mucosal contact, materials used, and prefabricated designs. Individual pontic designs like the saddle, modified ridge lap, and ovate are also described.
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.
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.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
The document discusses pontic design for fixed partial dentures (FPDs). It provides definitions of pontics, outlines requirements and basic design principles focusing on cleansability, appearance and strength. Key considerations in pontic design include biological factors like ridge contact, oral hygiene and materials used, as well as mechanical factors. Common pontic types are described based on their relationship to soft tissues, materials and retention features. Pre-treatment assessment of the pontic space and tissues is also emphasized for successful pontic design.
Provisional restorations in crowns and bridgesDR PAAVANA
Provisional restorations are temporary restorations used during dental treatment before final restorations are placed. They provide protection, stabilization, and function during treatment. Provisional restorations can be prefabricated or custom-made and are made from materials like polycarbonate, acrylic resin, or bis-acryl composites. They are fabricated using direct or indirect techniques and help evaluate treatment plans before permanent restorations are made.
The document discusses resin bonded fixed partial dentures (RBFPDs), also known as adhesive bridges. It covers the history, definitions, classifications, indications, contraindications, and various types of RBFPDs including bonded pontics, cast perforated resin-retained FPDs, etched cast resin-retained FPDs, and macro-mechanical retention resin-retained FPDs. Preparation designs for anterior and posterior teeth are described. Bonding involves cleaning, etching, priming, and using composite resin cements.
This document discusses the restoration of endodontically treated teeth. It covers the history of posts and cores dating back to 1747, definitions of key terms like dowel, core and ferrule. It explains why restoring endodontically treated teeth is important due to issues like dehydrated dentin and impaired neurosensory feedback. The document discusses various post and core systems including custom cast, prefabricated, and fiber posts. It also covers principles of tooth preparation including conservation of tooth structure, achieving retention and resistance form, and the importance of incorporating a ferrule.
The document discusses connectors in fixed partial dentures. Connectors are defined as the portion of a fixed dental prosthesis that unites the retainers and pontics. Connectors must be sufficiently strong, elliptical in cross-section, and placed as lingually and incisally as possible in anterior teeth and in the occlusal third for posterior teeth. Rigid connectors include cast, soldered, and loop connectors while non-rigid connectors allow limited movement and include dovetail, split, and cross-pin connectors. Soldering techniques such as torch, oven, laser, and infrared soldering are described for joining connectors along with considerations for solder composition and properties.
Tooth preparation for full veneer crowns /certified fixed orthodontic course...Indian dental academy
The Indian Dental Academy is the Leader in
continuing dental education , training dentists
in all aspects of dentistry and offering a wide
range of dental certified courses in different
formats.
Indian dental academy provides dental crown &
Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit
www.indiandentalacademy.com ,or call
0091-9248678078
Acid etches bridges and its scope/certified fixed orthodontic courses by Indi...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
This document discusses the key components of a fixed partial denture (FPD), including the pontic, retainers, connectors, and different classifications of each. It describes the pontic as the artificial tooth that replaces the missing tooth. Pontics can be classified based on their mucosal contact, material used, and fabrication method. Retainers are the portions that unite the pontic to the abutment teeth and can be full or partial crowns. Connectors provide rigidity and come in rigid cast/soldered or more flexible designs like tenon-mortise, loop, and split pontic connectors. The document provides illustrations and considerations for selecting different component designs based on factors like esthetics, oral hy
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 different types of full coverage restorations for anterior primary teeth in pediatric dentistry. It begins with an introduction describing the shift from extracting decayed primary teeth to restoring them. It then covers indications for full coverage of anterior teeth and contraindications. The main types discussed are stainless steel/open faced crowns, composite strip crowns, polycarbonate crowns, pre-veneered crowns, and zirconia crowns. For each type, the document describes advantages and disadvantages. It concludes that esthetics are now important in pediatric dentistry and different full coverage options allow restoring decayed anterior primary teeth while considering function, durability and aesthetics.
This document discusses semi-permanent crowns used in pediatric dentistry. It begins by introducing the author and defining semi-permanent crowns. It then covers the indications and contraindications for full coverage restorations. Five different types of crowns are described in detail: 1) preformed metal crowns, 2) stainless steel crowns with composite facings, 3) composite crowns, 4) preveneered stainless steel crowns, and 5) zirconia crowns. The conclusion reiterates that various crown options exist for restoring carious primary teeth, each with their own advantages and disadvantages.
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
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.
How to Make a Field Mandatory in Odoo 17Celine George
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
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3. Presented by:
Dr. Ch.Praveena,
Second year Graduate student,
Dept. of Prosthodontics and Crown &Bridge,
Sibar Institute of Dental Sciences,
Guntur-09.
Seminar on
PONTICS IN FPD
4. Contents
• Introduction
• Definitions
• Pre-treatment assessment and management
• Principles of pontic design
• Specifications for pontic design
• Classifications
• Individual design according to Rosenstiel
11/11/2022 4
Pontics in FPD- 84
5. • Other type of pontics
– Split pontic technique
– Multiple hygiene pontics
– Free-end pontics
– Bonded pontics
– Fiber reinforced composite resin pontics
– Use of Natural Tooth as a Pontic
• Post operative care
• Conclusion
• Bibliography and References
11/11/2022 5
Pontics in FPD- 84
6. Previous questions
• Analyse the importance of pontic designing in
preservation of the periodontium and abutment
(NTRUHS 2002, 20marks)
• Ovate pontic (RGUHS 2004, 20 marks)
• Classify pontic design in FPD (RGUHS 2009, 10
marks)
• Discuss the pontics in FPD design
• Discuss the present day concept and principles in
designing the pontics in FPD
• Prosthesis with special references to pontic design
11/11/2022 Pontics in FPD- 84 6
8. • Pontic name is derived from the Latin word pons,
meaning bridge.
• It is not a simple replacement, because placing an exact
anatomic replica of the tooth in the space is difficult as it
interferes with hygiene maintenance.
11/11/2022 8
Pontics in FPD- 84
9. Definitions
• “ An artificial teeth on a fixed dental prosthesis that
replaces a missing natural teeth, restores it’s function,
and usually fills the space previously occupied by the
clinical crown. “
GPT-8
• Tylman defines pontic as “the suspended member of a
fixed partial denture. It replaces the lost natural tooth,
restores function and occupies the space of the missing
tooth.”
11/11/2022 9
Pontics in FPD- 84
10. History
• Ancient relics of early civilization
– detached natural teeth from one mouth adjusted
to another by means of ligature wires
• Phoeniceans were the first to construct dental bridge
work
• Kerr & Roger in 1877 suggested that teeth of ivory or
bone secured by copper wire or catgut string .
11/11/2022 Pontics in FPD- 84 10
11. • Pierre Fouchard 1923- Father of modern
dental prosthesis.
He used “Tenons” which were in reality
dowels or pivots screwed into the roots to
retain some of his bridges.
• Seldberg in 1936
– Gold or porcelain or combination of two
11/11/2022 Pontics in FPD- 84 11
13. Pontic space
• Assessment for adequate function,
esthetic and also selection of
design.
• Way to assess clinical intraoral
examination, diagnostic cast and
mounting, radiographs.
11/11/2022 Pontics in FPD- 84 13
14. • Determination of pontic space
• One function of an FPD is to prevent
tilting or drifting of the adjacent teeth
into the edentulous space.
• Supra eruption
11/11/2022 14
Pontics in FPD- 84
15. • If pontic space is less, conditions increasing the
proximal contours of the adjacent teeth may be
better than making an FPD with under sized pontics.
• Small pontics are unacceptable because they trap
food and are difficult to clean.
11/11/2022 15
Pontics in FPD- 84
16. Residual ridge contour
• Ridge width and height should allow
the placement of pontic that appears
to emergence from the ridge.
• It must be free of high Frenal
attachment.
• Loss of residual ridge contour leads to
black triangles, food impaction and
percolation of saliva during speech.
11/11/2022 16
Pontics in FPD- 84
17. Residual ridge defects
Siebert classification
• Class I defects- faciolingual
loss of tissue width with
normal ridge height.
• Class II defects- loss of ridge
height with normal ridge
width.
11/11/2022 17
Pontics in FPD- 84
Class II defect
Class I defect
18. • Class III defects- a combination of loss in both
dimensions
• Class O – no defect
11/11/2022 Pontics in FPD- 84 18
Class III defect
Class O defect
19. Surgical corrections of ridge defects
• Roll technique
• Pouch technique
Class I defect
• Inter positional
graft
• Onlay graft
Class II & III
defect
11/11/2022 19
Pontics in FPD- 84
27. Pontic modifications
1. Patient’s inability to undergo surgery because of
cost.
2. Patient’s with medically compromised condition.
3. Ridges with severe defects, where 2 or more pontics
must be used to fill the space.
• By means of
11/11/2022 27
Pontics in FPD- 84
1. Gingival masks
2. Andrews bridge system
28. 11/11/2022 28
Pontics in FPD- 84
Gingival masks
• Edelhoff D,. A review of esthetic pontic design options.
Quintessence ini 2002:33:736-746.
Indication
30. Principles of pontic design
11/11/2022 Pontics in FPD- 84 30
Biological
Esthetic
Mechanical
31. Biologic principles of pontic design pertain to the
maintenance and preservation of
Residual ridge
Abutment & opposing teeth
Supporting tissues
11/11/2022 31
Pontics in FPD- 84
Biologic principles
33. Pontic ridge contact
Contact only facial to
the crest of the ridge
Tip of pontic must restricted
to keratinized gingiva
11/11/2022 33
Pontics in FPD- 84
34. 11/11/2022 34
Pontics in FPD- 84
Reduced keratinisation
Ulceration
Cavazos E . Tissue response to fixed partial denture pontics. J prosthet dent
1968;20(2): 143-153.
35. Oral hygiene considerations
• The chief cause of ridge irritation is the toxins released
from microbial plaque, which accumulate between the
gingival surface of the pontic and the residual ridge,
causing tissue inflammation and calculus formation.
• Gingival embrasures around the pontic should be wide
enough to permit oral hygiene aids.
11/11/2022 Pontics in FPD- 84 35
36. 11/11/2022 Pontics in FPD- 84 36
Sten RS in JPD 1958
“for a patient to maintain good oral hygiene to
prevent formation of plaques and to enjoy the
assurance of longevity of post dental restoration”
37. Biological aspect of Pontic material
• Any material chosen to fabricate the pontic should provide
• Glazed porcelain is generally considered the most
biocompatible of the available pontic. Well polished gold
is smoother, less prone to corrosion, and less retentive of
plaque than an unpolished or porous casting.
11/11/2022 37
Pontics in FPD- 84
38. Clayton JA in JPD 1970
• Concluded that test surfaces of glazed porcelain
were significantly rougher than polished test
surfaces of either acrylic resin or cast gold
Behrend DA in JPD 1981 & Henry PJ in JPD
1966
• Stated that glazed porcelain was most hygienic
material used and it is superior in terms of
esthetics and cleaning
11/11/2022 Pontics in FPD- 84 38
39. Occlusal forces
• Potentially harmful forces are more likely to
encounter if an FPD is loaded by an accidental biting
on a hard object or para functional activities like
bruxism.
• These forces are not reduced by narrowing the
occlusal table
11/11/2022 Pontics in FPD- 84 39
40. Mechanical problems may be caused by
• These factors can lead to fracture of the prosthesis
or displacement of the retainers.
11/11/2022 Pontics in FPD- 84 40
Mechanical principles
41. • Long-span posterior FPDs are particularly susceptible
to mechanical problems.
• Fracture of a long span metal ceramic FPD due to
high stress.
11/11/2022 Pontics in FPD- 84 41
42. Mechanical aspect of pontic materials
• Some fixed partial dentures are fabricated entirely of
• Acrylic resin veneered pontics have had limited
acceptance because of their reduced durability (wear
and discoloration).
11/11/2022 Pontics in FPD- 84 42
43. Metal ceramic pontics
• A well fabricated metal-ceramic
pontic is strong, easy to keep clean,
and looks natural.
• Mechanical failures are
Excessive thickness of porcelain
contributes to inadequate support
and predispose to fracture.
11/11/2022 Pontics in FPD- 84 43
44. • The metal surfaces to be veneered must be smooth
and free of pits. This leads to voids at interface.
• Sharp angles on the veneering area should be
rounded. They produce increased stress
concentrations that can cause mechanical failure.
11/11/2022 Pontics in FPD- 84 44
45. Resin-veneered pontic
• Historically, acrylic resin-veneered restorations had
deficiencies that made them acceptable only as
longer term provisional's.
• Their resistance to abrasion was lower then enamel
or porcelain, and noticeable wear occurred with
normal tooth-brushing.
11/11/2022 Pontics in FPD- 84 45
46. Fiber reinforced composite resin
pontics
• Composite resin can be used in FPD without a metal
substructure.
• A substructure matrix of impregnated glass or
polymer fiber provides structural strength.
11/11/2022 Pontics in FPD- 84 46
47. • An esthetically successful pontic should replicate
The form,
Contours,
Incisal edge,
Gingival and incisal embrasures,
Color of adjacent teeth.
11/11/2022 Pontics in FPD- 84 47
Esthetic Considerations
48. • A pontic should be interpreted as "growing" out of
the gingival tissue.
• Modified ridge lap pontic is recommended in anterior
situations.
11/11/2022 Pontics in FPD- 84 48
51. Mesiodistal width
• Frequently, the space available for a pontic will be
greater or smaller than the width of the contra
lateral tooth.
• This is usually due to uncontrolled tooth movement
that occurred when a tooth was removed and not
replaced.
• If possible, such a discrepancy should be corrected
by orthodontic treatment.
11/11/2022 Pontics in FPD- 84 51
52. • The width of an anterior tooth is usually identified by
the relative positions of the mesiofacial and
distofacial line angles.
• The features of the contra lateral tooth should be
duplicated as precisely as possible in the pontic, and
the space discrepancy can be compensated by
altering the shape of the proximal areas.
11/11/2022 Pontics in FPD- 84 52
53. • Space discrepancy presents less
of a problem when posterior
teeth are being replaced because
their distal halves are not
normally visible from the front.
• A discrepancy here can be
managed by duplicating the
visible mesial half of the tooth
and adjusting the size of the
distal half.
11/11/2022 Pontics in FPD- 84 53
54. 11/11/2022 Pontics in FPD- 84 54
Edelhoff, spiekermann and yildirim in
Quintessence Int 2002
• Pontic design is primarily influenced by
esthetic and phonetic considerations
• Local defects of the alveolar ridge often
complicate restorative measures
• They advocated modification of the pontic
design and pretreatment of the recipient site
for the pontic
55. Specifications for pontic design
• All surfaces should be smooth and convex
and properly finished .
• Contact with the labial mucosa should be
minimal and pressure free.
• Esthetics may require a long area of
contact to prevent the “black space
appearance”.
11/11/2022 Pontics in FPD- 84 55
Anterior pontic design
56. Posterior pontic design
• All surfaces should be convex and properly finish.
• Contact with buccal contagious slope should be
minimal and pressure free.
• Buccal and lingual shunting mechanism should
confirm to that of adjacent teeth.
• The occlusal table must be in functional harmony
with the occlusion of all the teeth.
• The overall length of the buccal surface should be
equal to that of the adjacent abutment teeth.
11/11/2022 Pontics in FPD- 84 56
58. According to Tylman’s
Pontics
Shape of the surface
contacting the ridge
Spheriodal
Conical
Ride lap
Modified
ridge lap
Materials used in
constructing a pontic
All metal
Metal
porcelains
Combination of
metal and resins
Pontics prefabricated by
manufracture
Flat backs
Trupontics
Long-pin pontics
Pontips
Reverse pin facings
Custom made
pontics
11/11/2022 58
Pontics in FPD- 84
60. According to Shillingburg
• Based on pontic design
• Saddle (ridge lap)
• Modified ridge lap
• Hygienic
• Conical
• Ovate
• Prefabricated pontic facings
• Metal-ceramic pontics
11/11/2022 60
Pontics in FPD- 84
61. According to Rosenstiel
11/11/2022 61
Pontics in FPD- 84
MUCOSAL CONTACT
Ridge lap
Modified Ridge lap
Ovate
Conical
NO MUCOSAL CONTACT
Sanitary
Modified sanitary
62. 11/11/2022 Pontics in FPD- 84 62
Description of individual pontics
according to Rosenstiel
63. SADDLE or RIDGE LAP PONTIC
• The saddle pontic has a concave fitting surface that
overlaps the residual ridge buccolingually, simulating
the contours and emergence profile of the missing
tooth on both sides of the residual ridge.
11/11/2022 63
Pontics in FPD- 84
ulceration
64. MODIFIED RIDGE LAP PONTIC
• The modified ridge lap pontic combines the best
features of the hygienic and saddle pontic designs,
combining esthetics with easy cleaning.
11/11/2022 Pontics in FPD- 84 64
Cross section
65. CONICAL PONTIC
• Often called egg-shaped, bullet-shaped, or heart-
shaped, the conical pontic is easy for the patient to
keep clean.
• It should be made as convex as possible, with only one
point of contact at the center of the residual ridge.
11/11/2022 Pontics in FPD- 84 65
66. OVATE PONTIC
• Developed by ABRAM in 1980
• The ovate pontic is the most esthetically appealing
pontic design, because it emerge from gingiva.
• It requires faciolingual width and apicocoronal thickness.
11/11/2022 Pontics in FPD- 84 66
67. MODIFIED OVATE PONTIC
• Developed to circumvent the problems encountered
with ovate Pontic by Liu 2003
• It does not require as much faciolingual thickness to
create an emergence profile .
11/11/2022 Pontics in FPD- 84 67
68. SANITARY OR HYGIENIC PONTIC
• Sanitary pontic allows easy cleaning, because its
tissue surface remains clear of the residual ridge.
• It’s disadvantages include entrapment of food
particles, which may lead to tongue habits that may
annoy the patient and less esthetic.
11/11/2022 Pontics in FPD- 84 68
69. MODIFIED SANITARY PONTIC
• Its gingival portion is shaped like an archway between
the retainers.
• This geometry permits increased connector size while
decreasing the stress concentrated in the pontic and
connectors.
• It is also less susceptible to tissue proliferation that can
occur when a pontic is too close to the residual ridge.
11/11/2022 Pontics in FPD- 84 69
71. SPLIT PONTIC TECHNIQUE
• It is an attachment placed entirely
within pontic.
• Use with tilted abutments to avoid
cutting deep box on distal of mesial
retainer.
• Plastic key or keyway is placed in
gingival third of pontic using surveyor.
11/11/2022 71
Pontics in FPD- 84
Shillingburg TH et al.,: Fundamentals of fixed prosthodontics, 3rd
ed. Carol Stream, Quintessence, 1997, pp. 531-532.
72. MULTIPLE HYGIENIC PONTIC
• This design is particularly well suited for long-
span FPDs because the metal casting is
extremely rigid.
• Mandibular anterior region.
11/11/2022 72
Pontics in FPD- 84
Zuckarman GR. A hygienic multiple pontic design.
Quint. Int 1997;28(4):259-262.
73. Features of multiple hygienic pontic
• Incompletely developed labiogingival
embrasures between adjacent pontics.
• Elimination of the linguiogingival
embrasures between adjacent pontics.
• Wide embrasures between the pontics
and the retainers.
11/11/2022 73
Pontics in FPD- 84
74. FREE-END PONTICS USED ON FPD
• The most typical free-end pontic on fixed partial dentures is a
single pontic attached to a single abutment casting.
• For example, a missing upper lateral incisor is restored with the
cuspid as the abutment tooth, by soldering the lateral incisor
pontic to the cuspid with no direct attachment on its mesial
surface.
11/11/2022 Pontics in FPD- 84 74
Schweitzer JM, Schweitzer RD, Schweitzer J. Free end pontics used on fixed
partial denture. J Prosthet Dent 1968;20(2):120-138
75. BONDED PONTICS
• The earliest resin bonded prosthesis were extracted
natural teeth or acrylic teeth used as pontics bonded
to the proximal and lingual surfaces of abutment
teeth with composite resins.
• Cast perforated resin
retained FPD s (mechanical)
- Rochette
11/11/2022 Pontics in FPD- 84 75
76. • Etched cast retained FPD s (micro mechanical) -
Maryland
• Macroscopic mechanical retention resin retained FPD s
– Virginia.
11/11/2022 Pontics in FPD- 84 76
77. USE OF NATURAL TOOTH AS A PONTIC
• Using the natural tooth as a pontic offers the
benefits of being the right size, shape and colour.
Moreover, the positive psychological value to the
patient in using his or her natural tooth is an added
benefit.
11/11/2022 Pontics in FPD- 84 77
Kukreja BJ, Kukreja P. Use of Natural Tooth as a Pontic . Clinical Dentistry 2012;44-49
79. FIBER REINFORCED COMPOSITE RESIN
PONTICS
• Drawbacks of metal substructure used for metal
ceramic
1. Undergo corrosion and may elicit allergic
reactions.
2. Causes acute or chronic hazard to laboratory
personnel.
3. Lack of esthetic
11/11/2022 Pontics in FPD- 84 79
80. • Composite resin can be used in
FPD without a metal
substructure.
• A substructure matrix of
impregnated glass or polymer
fiber provides structural strength.
11/11/2022 Pontics in FPD- 84 80
81. Post Operative Care
• Patient should be instructed to use oral hygiene aids such as
floss threads and brushes around pontic.
• Floss can be looped throw the embrasures spaces on each
sides, and loop can be pulled tightly the convex pontic
surface.
• A slide motion is then used to remove plaque.
• Periodic recall check up
11/11/2022 81
Pontics in FPD- 84
84. References
• Rosenstiel FS, Land FM, Fujimoto J: Contemporary fixed
prosthodontics, 4th ed. St. Louis, Elsevier,2011, pp.616-648.
• Shillingburg TH et al.,: Fundamentals of fixed prosthodontics,
3rd ed. Carol Stream, Quintessence, 1997, pp. 485-507.
• Malone FP et al.,: Tylman’s theory and practice of fixed
prosthodontics, 8th ed. St. Louis, Ishiyaku EuroAmerica, 1997,
pp. 375-370.
• Bernard GN Smith.Planning and making Crowns and Bridges,
3rd ed. London, Martin Dunitz, 2000, pp. 41-61,215-222.
11/11/2022 Pontics in FPD- 84 84
85. • Edelhoff D,. A review of esthetic pontic design options.
Quintessence ini 2002:33:736-746.
• Cavazos E . Tissue response to fixed partial denture pontics. J
prosthet dent 1968;20(2): 143-153.
• Stein RS. Pontic residual ridge relationship: A research. J
Prosthet Dent 1966;16:251.
• Schweitzer JM, Schweitzer RD, Schweitzer J. Free end pontics
used on fixed partial denture. J Prosthet Dent
1968;20(2):120-138
11/11/2022 Pontics in FPD- 84 85
References
86. • Zuckarman GR. A hygienic multiple pontic design. Quint. Int
1997;28(4):259-262.
• Kukreja BJ, Kukreja P. Use of Natural Tooth as a Pontic .
Clinical Dentistry 2012;44-49
11/11/2022 Pontics in FPD- 84 86
References
Editor's Notes
Way to assess clinical intraoral examination, diagnostic cast and mounting, radiographs
For esthetic and health of tissue.
Wedge shaped graft
Cut residual ridge for revascularization
Preservation of the alveolar process can be achieved through immediate restorative and periodontal intervention at the time of tooth removal.
By conditioning the extraction site and providing a matrix for healing, the pre extraction gingival architecture, or socket can be preserved.
Prepare the abutment teeth
Prepare the interim FPD indirect technique
Preserve facial plate of the bone and scalloped architecture of the interproximal bone, it is essential for preservation of interdental pabilla
After extraction pontic should be ovate 2.5 mm apical to facial free gingival margine. Because scoket begin to collapse immeiatly of the extraction.
Light force used to extrude the tooth to be extraction, leads to apposition of bone occur.
Red line reference point. Blue and yellow line denotes change in gingival crest height
Small defect treated with pink porcelain
Large defect treated with Andrews bridge
Black trianges collect plaque, interfere with floss, reduce rigidity of pontic span
It should support with metal frame work otherv wise leads to fracture
Fixed retainers are connected by rectangular bar ,
Slightly wider mesiodistally at facial and narrow at lingual aspect and the contact should not gingivofacial line angle
FPDs should be made as rigid as possible, because any flexure during mastication or Para function may cause pressure on the gingiva and cause fractures of the veneering material.
Narrowing the occlusal table may impede or even preclude the development of harmonious and stable occlusal relationship.
Most pontics are fabricated by the metal-ceramic technique.
1 The framework must provide a uniform veneer of porcelain (approximately 1.2mm).
Surface irregularities will cause incomplete wetting by the porcelain slurry, leading to voids at the porcelain metal interface that reduce bond strength and increase the possibility of mechanical failure.
Continuous dimensional change of the veneers often caused leakage at the metal-resin interface, with subsequent discoloration of the restoration.
The pontics simulation of a natural tooth is most often betrayed at the tissue-pontic interface.
A, A pontic should have the same incisogingival height (H) as the original tooth. B, Correctly contoured pontic. C, Incorrect contour. (The dotted lines in B and C show the original tooth contour.) The shelf at the gingival margin may trap food and create an esthetically unacceptable shadow.
Uncontrolled tooth movement leads to lack of space it should be correct by orthodontic corrections.
Not indicated because it causes ulceration and difficult to clean.
Advantage is esthetic
Disadvantage -Less esthetic
This design is recommended for mandibular posterior teeth where esthetics is a lesser concern.
Advantage is pleasing appearance and strength. Extraction socket
Its major disadvantage is that it requires a sufficient faciolingual width and apicocoronal thickness to house the ovate pontic within the edentulous ridge. Otherwise it require augmentation procedures.
Ease to clean than ovate
Strong cuspid with lateral pontic, weakest lateral supporting central pontic
There are certain advantages to using polymeric materials instead of ceramics.
They are easy to manipulate and repair and do not require the high melting range alloys needed for metal-ceramic techniques.
New generation indirect resin have a higher density of inorganic ceramic filler than traditional direct and indirect composite resin.
Economic of pt.
Missing 31 modified ridge lap pontic is given for the natural teeth then tooth is articulated and bonded to the fiber splint then it is bonded with light cure composite.
Immediate pontic technique’ suggested by Spear maintains the interdental papilla following anterior tooth removal.
The pontic design is said to determine the success or failure of a bridge. Designs that allow easy plaque control are especially important to a pontic’s long term success.
Minimizing tissue contact by maximizing the convexity of the pontic’s gingival surface is essential.
Special consideration is also needed to create a design that combines easy maintenance with natural appearance and adequate mechanical strength.