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.
CEMENTATION PROCEDURES IN FIXED PARTIAL DENTURES/ dental crown & bridge coursesIndian dental academy
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses the process of making dentures from start to finish. This includes taking impressions of the mouth, selecting teeth, arranging the teeth, injecting plastic to form the denture bases, curing the plastic, and finishing the dentures. The goal is to produce dentures that fit properly and allow patients to chew and speak comfortably. Proper jaw alignment and centric relation are emphasized throughout the process to ensure optimal function.
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.
This document discusses pontic design in fixed partial dentures. It begins with definitions of a pontic and outlines key considerations for pontic design including pretreatment assessment of the pontic space and residual ridge contour, classification of pontics, and biologic, mechanical and esthetic factors. Optimal pontic design aims to provide an esthetic appearance while enabling adequate oral hygiene and preventing tissue irritation. Pontic selection depends on factors like location and materials used. The document discusses various pontic designs like sanitary, modified sanitary, saddle/ridge lap and ovate pontics and their appropriate uses. Biologic considerations for pontic design include maintaining pressure-free contact to prevent inflammation.
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.
3 basic principles for designing class ii and iii and ivAmal Kaddah
Designing Kennedy class II partial dentures usually follows the same basic principles as class I partial dentures. The main challenges are lack of proper posterior support and retention due to the absence of a posterior saddle. Indirect retention is important to counteract rotational forces on the denture. Problems with class II dentures can be reduced by adding retention on the dentulous side, using a clasp line that divides the denture in half, and indirect retainers to reduce lateral loading and denture rotation. Stress on the residual ridge and abutment teeth is minimized through broad denture base coverage, accurate impressions, improving the ridge condition, using narrow teeth, and proper choice of direct retainers.
The document discusses relining and rebasing of dentures. Relining involves resurfacing the tissue side of a denture with new base material to improve adaptation, while rebasing replaces the entire denture base. The main objectives are to re-establish correct denture-tissue relationship and restore stability, retention, and occlusion. Common indications include alveolar resorption, decreased vertical dimension, and immediate dentures. Contraindications include excessive ridge resorption and poor jaw relations. Clinical procedures involve tissue and denture preparation before making new impressions, while laboratory procedures include articulation, reverse flasking, and jig methods.
This document discusses various impression techniques used in fixed prosthodontics (FPD). It describes 12 different techniques including putty-wash, dual-phase, mono-phase, hydrocolloid laminate, copper-band, vacuum-adapted splints, preformed crown shells, dual-arch, functional check bite, matrix system, cast impression coping, and digital impressions. For each technique, it explains the materials and steps involved and notes advantages and disadvantages. It concludes that the accuracy of an impression depends on the material, tray, and technique used and the operator should select what best suits the clinical situation.
CEMENTATION PROCEDURES IN FIXED PARTIAL DENTURES/ dental crown & bridge coursesIndian dental academy
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The document discusses the process of making dentures from start to finish. This includes taking impressions of the mouth, selecting teeth, arranging the teeth, injecting plastic to form the denture bases, curing the plastic, and finishing the dentures. The goal is to produce dentures that fit properly and allow patients to chew and speak comfortably. Proper jaw alignment and centric relation are emphasized throughout the process to ensure optimal function.
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.
This document discusses pontic design in fixed partial dentures. It begins with definitions of a pontic and outlines key considerations for pontic design including pretreatment assessment of the pontic space and residual ridge contour, classification of pontics, and biologic, mechanical and esthetic factors. Optimal pontic design aims to provide an esthetic appearance while enabling adequate oral hygiene and preventing tissue irritation. Pontic selection depends on factors like location and materials used. The document discusses various pontic designs like sanitary, modified sanitary, saddle/ridge lap and ovate pontics and their appropriate uses. Biologic considerations for pontic design include maintaining pressure-free contact to prevent inflammation.
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.
3 basic principles for designing class ii and iii and ivAmal Kaddah
Designing Kennedy class II partial dentures usually follows the same basic principles as class I partial dentures. The main challenges are lack of proper posterior support and retention due to the absence of a posterior saddle. Indirect retention is important to counteract rotational forces on the denture. Problems with class II dentures can be reduced by adding retention on the dentulous side, using a clasp line that divides the denture in half, and indirect retainers to reduce lateral loading and denture rotation. Stress on the residual ridge and abutment teeth is minimized through broad denture base coverage, accurate impressions, improving the ridge condition, using narrow teeth, and proper choice of direct retainers.
The document discusses relining and rebasing of dentures. Relining involves resurfacing the tissue side of a denture with new base material to improve adaptation, while rebasing replaces the entire denture base. The main objectives are to re-establish correct denture-tissue relationship and restore stability, retention, and occlusion. Common indications include alveolar resorption, decreased vertical dimension, and immediate dentures. Contraindications include excessive ridge resorption and poor jaw relations. Clinical procedures involve tissue and denture preparation before making new impressions, while laboratory procedures include articulation, reverse flasking, and jig methods.
This document discusses various impression techniques used in fixed prosthodontics (FPD). It describes 12 different techniques including putty-wash, dual-phase, mono-phase, hydrocolloid laminate, copper-band, vacuum-adapted splints, preformed crown shells, dual-arch, functional check bite, matrix system, cast impression coping, and digital impressions. For each technique, it explains the materials and steps involved and notes advantages and disadvantages. It concludes that the accuracy of an impression depends on the material, tray, and technique used and the operator should select what best suits the clinical situation.
This document discusses preparations for partial veneer crowns. It covers indications, contraindications, advantages, disadvantages, and preparations for both posterior and anterior teeth. For posterior teeth, it describes preparations for maxillary premolar and molar three-quarter and seven-eighth crowns, as well as mandibular premolar modified three-quarter crowns. For anterior teeth, it discusses maxillary canine three-quarter crowns and pinledge preparations for maxillary central incisors. The goal of partial veneer crowns is to preserve tooth structure while providing retention, resistance, and rigidity. Proper preparation design and metal coverage are important for successful partial crowns.
The document discusses face bows, which are used to record the spatial relationship between the maxilla and temporomandibular joints. This allows for accurate transfer of jaw relations to an articulator. The document covers the history and evolution of face bows, from early prototypes to modern designs. It describes the parts of face bows including the U-shaped frame, condylar rods/earpieces, bite fork, and locking/reference points. Different types are classified including arbitrary, fascia, and earpiece models. The uses, advantages, and limitations of various designs are also outlined.
The document discusses different types of laminate veneer preparations. Type I is called a window preparation with no incisal edge reduction. Type II, called a butt-joint preparation, involves 2 mm of incisal reduction without a palatal chamfer. Type III, or wrap-around preparation, includes 1-3 mm of incisal reduction with a 1 mm palatal chamfer to restrict angle fractures and enhance esthetics. The preparations are performed using round or tapered diamond burs to reduce enamel in a uniform and conservative manner confined to the facial surface of teeth.
This document discusses the history and evolution of dental surveyors from their introduction in 1918 to modern computer-aided designs. It outlines key developments in surveyor models over time from early prototypes to current instruments. The purposes of surveyors are to determine the optimal path of insertion for removable partial dentures, identify areas requiring modification, and delineate retentive undercuts and interferences.
Posterior tooth preparations /certified fixed orthodontic courses by Indian d...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
1) There are two main hardening mechanisms for dental cements - acid-base reactions and polymerization reactions. Common cements that use acid-base reactions include zinc phosphate, polycarboxylate, and glass ionomer cements. Resin cements use a polymerization reaction.
2) Zinc phosphate cement has a long history of success but lacks adhesion and fluoride release. Polycarboxylate cement bonds to tooth structure and has short mixing/working times. Glass ionomer cement releases fluoride and bonds to tooth structure.
3) Resin-modified glass ionomer cement combines the benefits of glass ionomer cement with the strength and handling of resin, providing good early strength and reduced moisture sensitivity.
The document discusses various types of failures that can occur with crowns and bridges. It covers biological failures like caries, periodontal disease, and pulp issues. Mechanical failures such as loss of retention, fractures, and wear are described. Esthetic failures involving color mismatches are also outlined. The classifications of these failures are provided along with their causes and management approaches. Design failures involving inadequate bridge design and marginal deficiencies are explained.
This document provides instructions on making preliminary impressions for complete dentures using an irreversible hydrocolloid (alginate) syringe technique. It emphasizes the importance of custom trays and border molding to accurately capture critical anatomical details like the vestibular tissues. This helps prevent distortion and ensures an effective denture seal for retention. The syringe technique is recommended to ensure alginate captures anatomy sometimes missed using simple tray impressions. Diagnostic casts poured from the preliminary impressions allow for custom tray fabrication.
This document discusses the history and classification of precision dental attachments. It begins by outlining some of the early developments in attachment designs from the 19th century. It then classifies attachments based on their fabrication method, relationship to abutment teeth, stiffness, and geometric configuration. The advantages and disadvantages of attachments are provided. Key factors in selecting abutment teeth are identified. Requirements for ideal abutment teeth are outlined. Contraindications and the role of attachments in different types of prosthodontic treatments are summarized.
The document discusses denture bases and methods for attaching teeth. It defines a denture base as the part of a removable partial denture that rests on tissues and attaches teeth. The main types are acrylic resin bases and metal bases. Acrylic resin is commonly used for its esthetics but can warp, while metal bases are stronger but harder to adjust. Teeth can be attached to bases using acrylic resin, cement, or casting them with the metal framework.
The document discusses NiTi endodontic files, specifically the HyFlex CM file. It describes how NiTi files work using shape memory properties to improve flexibility and reduce problems like ledges. The HyFlex CM file uses controlled memory processing to further increase flexibility without rebound. This allows for superior canal tracking and reduces procedural errors. Studies show the HyFlex CM files have up to 339% higher fatigue resistance than standard NiTi files and less debris extrusion and dentinal cracks compared to other file types.
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 tissue conditioners and soft denture liners. It defines tissue conditioners as temporary resilient materials placed inside a denture for a short period to allow healing of traumatized tissues. Soft denture liners provide long-term cushioning and are made of materials like silicone or soft acrylic. The document outlines the ideal properties, uses, and application process for tissue conditioners. It also discusses the requirements for resilient denture liners to be biologically compatible, resilient, dimensionally stable, and resistant to staining and abrasion.
The document discusses different types of partial veneer crowns, including maxillary and mandibular posterior three-quarter crowns. It describes the tooth preparation steps for each type in detail, including occlusal and axial reduction, placement of grooves and bevels, and finishing. The advantages of partial crowns include preserving more tooth structure while still providing adequate restoration of function. Key factors in the preparation like extent of reduction, groove placement and size, and bevel design help ensure strength and longevity of the restoration.
The document discusses endocrowns, which are adhesive restorations that extend into the pulp chamber as an alternative to post-core restorations. The objectives of endocrowns are to prevent microleakage, protect tooth structure, and restore form, function and aesthetics. Endocrowns consist of a 1-1.2mm circumferential butt margin and central retention cavity that provides stability through adhesive bonding. They are indicated when post-cores cannot be used or for limited interocclusal space and are fabricated through pressable or CAD/CAM techniques using lithium disilicate or resin-matrix ceramics.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
Gingival finish lines in fixed prosthodonticsNAMITHA ANAND
This document discusses different finish line designs used in fixed prosthodontics. It defines a finish line as the junction between prepared and unprepared tooth structure. Common finish line locations are subgingival, equigingival, and supragingival. Common designs include chamfer, shoulder, bevelled shoulder, and knife edge. A chamfer is the preferred design as it provides greater angulation than knife edge but less width than shoulder. Placement depends on factors like esthetics, plaque control, and periodontal health. Subgingival margins are not recommended but may be used when esthetics require. Equigingival placement at the gingival crest is optimal when possible.
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.
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
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
The document discusses tooth preparation for full veneer crowns. It provides an introduction and history of full veneer crowns, defines key terminology, and describes the rotary instruments used for tooth preparation. It also discusses preparation techniques for different types of full veneer crowns, including complete cast metal crowns, anterior and posterior metal-ceramic crowns, porcelain jacket crowns, and cast ceramic crowns. The document emphasizes that tooth preparation is a critical phase that impacts outcomes like pulpal health, aesthetics, occlusion and restoration longevity.
This document discusses preparations for partial veneer crowns. It covers indications, contraindications, advantages, disadvantages, and preparations for both posterior and anterior teeth. For posterior teeth, it describes preparations for maxillary premolar and molar three-quarter and seven-eighth crowns, as well as mandibular premolar modified three-quarter crowns. For anterior teeth, it discusses maxillary canine three-quarter crowns and pinledge preparations for maxillary central incisors. The goal of partial veneer crowns is to preserve tooth structure while providing retention, resistance, and rigidity. Proper preparation design and metal coverage are important for successful partial crowns.
The document discusses face bows, which are used to record the spatial relationship between the maxilla and temporomandibular joints. This allows for accurate transfer of jaw relations to an articulator. The document covers the history and evolution of face bows, from early prototypes to modern designs. It describes the parts of face bows including the U-shaped frame, condylar rods/earpieces, bite fork, and locking/reference points. Different types are classified including arbitrary, fascia, and earpiece models. The uses, advantages, and limitations of various designs are also outlined.
The document discusses different types of laminate veneer preparations. Type I is called a window preparation with no incisal edge reduction. Type II, called a butt-joint preparation, involves 2 mm of incisal reduction without a palatal chamfer. Type III, or wrap-around preparation, includes 1-3 mm of incisal reduction with a 1 mm palatal chamfer to restrict angle fractures and enhance esthetics. The preparations are performed using round or tapered diamond burs to reduce enamel in a uniform and conservative manner confined to the facial surface of teeth.
This document discusses the history and evolution of dental surveyors from their introduction in 1918 to modern computer-aided designs. It outlines key developments in surveyor models over time from early prototypes to current instruments. The purposes of surveyors are to determine the optimal path of insertion for removable partial dentures, identify areas requiring modification, and delineate retentive undercuts and interferences.
Posterior tooth preparations /certified fixed orthodontic courses by Indian d...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
1) There are two main hardening mechanisms for dental cements - acid-base reactions and polymerization reactions. Common cements that use acid-base reactions include zinc phosphate, polycarboxylate, and glass ionomer cements. Resin cements use a polymerization reaction.
2) Zinc phosphate cement has a long history of success but lacks adhesion and fluoride release. Polycarboxylate cement bonds to tooth structure and has short mixing/working times. Glass ionomer cement releases fluoride and bonds to tooth structure.
3) Resin-modified glass ionomer cement combines the benefits of glass ionomer cement with the strength and handling of resin, providing good early strength and reduced moisture sensitivity.
The document discusses various types of failures that can occur with crowns and bridges. It covers biological failures like caries, periodontal disease, and pulp issues. Mechanical failures such as loss of retention, fractures, and wear are described. Esthetic failures involving color mismatches are also outlined. The classifications of these failures are provided along with their causes and management approaches. Design failures involving inadequate bridge design and marginal deficiencies are explained.
This document provides instructions on making preliminary impressions for complete dentures using an irreversible hydrocolloid (alginate) syringe technique. It emphasizes the importance of custom trays and border molding to accurately capture critical anatomical details like the vestibular tissues. This helps prevent distortion and ensures an effective denture seal for retention. The syringe technique is recommended to ensure alginate captures anatomy sometimes missed using simple tray impressions. Diagnostic casts poured from the preliminary impressions allow for custom tray fabrication.
This document discusses the history and classification of precision dental attachments. It begins by outlining some of the early developments in attachment designs from the 19th century. It then classifies attachments based on their fabrication method, relationship to abutment teeth, stiffness, and geometric configuration. The advantages and disadvantages of attachments are provided. Key factors in selecting abutment teeth are identified. Requirements for ideal abutment teeth are outlined. Contraindications and the role of attachments in different types of prosthodontic treatments are summarized.
The document discusses denture bases and methods for attaching teeth. It defines a denture base as the part of a removable partial denture that rests on tissues and attaches teeth. The main types are acrylic resin bases and metal bases. Acrylic resin is commonly used for its esthetics but can warp, while metal bases are stronger but harder to adjust. Teeth can be attached to bases using acrylic resin, cement, or casting them with the metal framework.
The document discusses NiTi endodontic files, specifically the HyFlex CM file. It describes how NiTi files work using shape memory properties to improve flexibility and reduce problems like ledges. The HyFlex CM file uses controlled memory processing to further increase flexibility without rebound. This allows for superior canal tracking and reduces procedural errors. Studies show the HyFlex CM files have up to 339% higher fatigue resistance than standard NiTi files and less debris extrusion and dentinal cracks compared to other file types.
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 tissue conditioners and soft denture liners. It defines tissue conditioners as temporary resilient materials placed inside a denture for a short period to allow healing of traumatized tissues. Soft denture liners provide long-term cushioning and are made of materials like silicone or soft acrylic. The document outlines the ideal properties, uses, and application process for tissue conditioners. It also discusses the requirements for resilient denture liners to be biologically compatible, resilient, dimensionally stable, and resistant to staining and abrasion.
The document discusses different types of partial veneer crowns, including maxillary and mandibular posterior three-quarter crowns. It describes the tooth preparation steps for each type in detail, including occlusal and axial reduction, placement of grooves and bevels, and finishing. The advantages of partial crowns include preserving more tooth structure while still providing adequate restoration of function. Key factors in the preparation like extent of reduction, groove placement and size, and bevel design help ensure strength and longevity of the restoration.
The document discusses endocrowns, which are adhesive restorations that extend into the pulp chamber as an alternative to post-core restorations. The objectives of endocrowns are to prevent microleakage, protect tooth structure, and restore form, function and aesthetics. Endocrowns consist of a 1-1.2mm circumferential butt margin and central retention cavity that provides stability through adhesive bonding. They are indicated when post-cores cannot be used or for limited interocclusal space and are fabricated through pressable or CAD/CAM techniques using lithium disilicate or resin-matrix ceramics.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
Gingival finish lines in fixed prosthodonticsNAMITHA ANAND
This document discusses different finish line designs used in fixed prosthodontics. It defines a finish line as the junction between prepared and unprepared tooth structure. Common finish line locations are subgingival, equigingival, and supragingival. Common designs include chamfer, shoulder, bevelled shoulder, and knife edge. A chamfer is the preferred design as it provides greater angulation than knife edge but less width than shoulder. Placement depends on factors like esthetics, plaque control, and periodontal health. Subgingival margins are not recommended but may be used when esthetics require. Equigingival placement at the gingival crest is optimal when possible.
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.
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
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
The document discusses tooth preparation for full veneer crowns. It provides an introduction and history of full veneer crowns, defines key terminology, and describes the rotary instruments used for tooth preparation. It also discusses preparation techniques for different types of full veneer crowns, including complete cast metal crowns, anterior and posterior metal-ceramic crowns, porcelain jacket crowns, and cast ceramic crowns. The document emphasizes that tooth preparation is a critical phase that impacts outcomes like pulpal health, aesthetics, occlusion and restoration longevity.
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.
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
Publishid Simplyfinig direct post pattern technique using fiber postReda Dimashkieh
This article presents a simplified direct-indirect technique for fabricating custom cast post and core restorations using prefabricated fiber posts and polyvinyl siloxane material. A post space is prepared and a fiber post is selected to match the drill size. The fiber post is placed in polyvinyl siloxane putty to create a mold, which is filled with resin to create a preformed post pattern. The pattern can be customized intraorally before being cast to create the final post and core restoration, allowing fabrication of multiple patterns chairside in a simplified manner compared to conventional direct techniques.
An acrylic partial denture (APD) is one of the options available for replacing missing teeth and is the most cost effective treatment option. However, APDs have disadvantages like poor strength and are generally not considered a permanent treatment. They are commonly used as permanent prostheses in less affluent societies due to their low cost. Principles of design for APDs are the same as for metal partial dentures, emphasizing tooth support, retention, and a single path of insertion. With proper design and techniques, the disadvantages of APDs can be minimized.
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.
RECENT ADVANCES IN REMOVABLE PARTIAL DENTURESNAMITHA ANAND
This document discusses recent advances in removable partial dentures (RPDs). It begins with an introduction noting that while healthcare technology has advanced, RPD design and fabrication has not significantly changed since the 1950s. It then discusses pros and cons of various materials commonly used for RPDs like metals, flexibles, and acrylic. New high performance polymers and CAD/CAM systems for digital design and manufacturing of RPD frameworks are also covered. The use of polymers like PEEK and implant-assisted RPDs to improve support, retention and stability is summarized. The document concludes with a review of the literature on the accuracy of CAD-CAM systems for RPD frameworks and a clinical case report on the use of 3D-printed
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.
AN INTRODUCTION TO REMOVABLE PARTIAL PROSTHODONTICS INCLUDING ITS CLASSIFICATION, MATERIALS USED, AND THE INSIGHTS OF THE TREATMENT.
THE PRESENTATION IS MADE BY GOING THROUGH VARIOUS ARTICLES BASED ON REMOVABLE PARTIAL DENTURE.
AND ADVANCEMENTS IN THE FIELD OF CAST PARTIAL DENTURE.
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.
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.
Provisionalization : -
To establish esthetics, occlusal stability, and function for a limited time in preparation for the definitive prosthesis; to verify therapeutic outcome and patient acceptance before the definitive prostheses
Managment of endodontically treated tooth /certified fixed orthodontic cours...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
00919248678078
This document discusses and compares the advantages and disadvantages of various types of removable partial dentures (RPDs), including cast metal RPDs, conventional rigid acrylic RPDs, and nylon flexible dentures. It provides details on the composition, manipulation, and commercial products of nylon flexible dentures. While flexible dentures are more comfortable and esthetic than other options, they also have limitations such as being intended only for temporary use, difficulty in repairing or relining, and lack of occlusal rests. The document analyzes factors to consider when selecting between RPD materials based on a patient's needs and dental situation.
DECLARATION OF HELSINKI - History and principlesanaghabharat01
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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
9/25/2023 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
9/25/2023 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
9/25/2023 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.
9/25/2023 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.”
9/25/2023 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 .
9/25/2023 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
9/25/2023 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.
9/25/2023 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
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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
9/25/2023 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
9/25/2023 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
9/25/2023 27
Pontics in FPD- 84
1. Gingival masks
2. Andrews bridge system
28. 9/25/2023 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
9/25/2023 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
9/25/2023 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
9/25/2023 33
Pontics in FPD- 84
34. 9/25/2023 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.
9/25/2023 Pontics in FPD- 84 35
36. 9/25/2023 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.
9/25/2023 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
9/25/2023 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
9/25/2023 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.
9/25/2023 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.
9/25/2023 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).
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 Pontics in FPD- 84 53
54. 9/25/2023 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”.
9/25/2023 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.
9/25/2023 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
9/25/2023 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
9/25/2023 60
Pontics in FPD- 84
61. According to Rosenstiel
9/25/2023 61
Pontics in FPD- 84
MUCOSAL CONTACT
Ridge lap
Modified Ridge lap
Ovate
Conical
NO MUCOSAL CONTACT
Sanitary
Modified sanitary
62. 9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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 .
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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.
9/25/2023 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 linguogingival
embrasures between adjacent pontics.
• Wide embrasures between the pontics
and the retainers.
9/25/2023 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.
9/25/2023 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
9/25/2023 Pontics in FPD- 84 75
76. • Etched cast retained FPD s (micro mechanical) -
Maryland
• Macroscopic mechanical retention resin retained FPD s
– Virginia.
9/25/2023 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.
9/25/2023 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
9/25/2023 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.
9/25/2023 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
9/25/2023 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.
9/25/2023 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
9/25/2023 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
9/25/2023 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.