This document provides information on unconventional fixed partial dentures. It discusses resin bonded fixed partial dentures, including definitions, advantages, disadvantages, indications, contraindications and different types. It describes procedures for tooth preparation and fabrication of resin bonded FPD frameworks. Different techniques for resin to metal bonding are also summarized, including electrolytic etching, chemical etching and macroscopic retention methods.
This document discusses obturators used for acquired maxillary defects. It begins by defining an obturator and reviewing the history of obturators dating back to Ambroise Pare in the 1540s. It then covers classifications of maxillary defects, designs of obturators for different defect classes, functions of obturators, materials used, and considerations for fabrication. The document emphasizes that obturators are designed to close tissue openings, restore oral function, and rehabilitate patients with maxillary defects through adequate support, retention and stability.
Full mouth rehabilitation using pankey mann schulyer techniqueFebel Huda
This document describes the full mouth rehabilitation technique using the Pankey-Mann-Schuyler method. It discusses the treatment objectives of comfort, stable occlusion, and aesthetics. It outlines the indications and goals for occlusal rehabilitation, including multiple tooth contacts and protected occlusion. It then describes the specific steps of the Pankey-Mann technique, including facebow transfer, mounting casts, wax pattern fabrication, and functionally generated paths to achieve the treatment goals.
This document provides an overview of prosthodontic management of mandibular defects. It begins by classifying mandibular defects and outlining various complications that can arise. Several key factors that affect treatment are then discussed, including the location and extent of the defect, remaining teeth/implants, degree of deviation/rotation, mouth opening, tongue function, vestibular depth, skin grafting, radiation therapy, and previous denture experience. The relationship between surgical reconstruction techniques and prosthodontic rehabilitation is explored. Finally, general principles of complete denture construction for these patients are covered, along with various treatment options and techniques for impressions and provisional bases.
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.
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 occlusal schemes for implants, known as implant protective occlusion (IPO). IPO aims to reduce stress at the implant-bone interface through 14 considerations including eliminating premature contacts, positioning occlusal contacts over implant bodies, reducing cantilever lengths, and decreasing crown heights. The goals of IPO are to reduce force magnification, improve force direction, and increase the implant support area to promote implant longevity and success.
MANAGEMENT OF SEVERELY RESORBED RIDGES Kate Maundu
Flabby ridges occur due to excessive load and bone resorption, resulting in mobile tissue. Management includes conservative approaches like tissue rest and massage, denture modifications, and tissue conditioning. Impression techniques aim to support flabby tissue without displacement. Surgical techniques can provide firm tissue but risk further resorption. Implants avoid tissue support. Severely resorbed ridges have multiple etiological factors and require extensive denture modifications or surgery to improve support and retention.
The document discusses surgical and prosthetic techniques for maxillofacial rehabilitation following cancer resection, noting that the goal is to restore both function and cosmesis through a combination of surgery, such as skin grafting, and prosthetics like obturators and implants to replace missing structures of the face, jaw, and oral cavity.
This document discusses obturators used for acquired maxillary defects. It begins by defining an obturator and reviewing the history of obturators dating back to Ambroise Pare in the 1540s. It then covers classifications of maxillary defects, designs of obturators for different defect classes, functions of obturators, materials used, and considerations for fabrication. The document emphasizes that obturators are designed to close tissue openings, restore oral function, and rehabilitate patients with maxillary defects through adequate support, retention and stability.
Full mouth rehabilitation using pankey mann schulyer techniqueFebel Huda
This document describes the full mouth rehabilitation technique using the Pankey-Mann-Schuyler method. It discusses the treatment objectives of comfort, stable occlusion, and aesthetics. It outlines the indications and goals for occlusal rehabilitation, including multiple tooth contacts and protected occlusion. It then describes the specific steps of the Pankey-Mann technique, including facebow transfer, mounting casts, wax pattern fabrication, and functionally generated paths to achieve the treatment goals.
This document provides an overview of prosthodontic management of mandibular defects. It begins by classifying mandibular defects and outlining various complications that can arise. Several key factors that affect treatment are then discussed, including the location and extent of the defect, remaining teeth/implants, degree of deviation/rotation, mouth opening, tongue function, vestibular depth, skin grafting, radiation therapy, and previous denture experience. The relationship between surgical reconstruction techniques and prosthodontic rehabilitation is explored. Finally, general principles of complete denture construction for these patients are covered, along with various treatment options and techniques for impressions and provisional bases.
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.
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 occlusal schemes for implants, known as implant protective occlusion (IPO). IPO aims to reduce stress at the implant-bone interface through 14 considerations including eliminating premature contacts, positioning occlusal contacts over implant bodies, reducing cantilever lengths, and decreasing crown heights. The goals of IPO are to reduce force magnification, improve force direction, and increase the implant support area to promote implant longevity and success.
MANAGEMENT OF SEVERELY RESORBED RIDGES Kate Maundu
Flabby ridges occur due to excessive load and bone resorption, resulting in mobile tissue. Management includes conservative approaches like tissue rest and massage, denture modifications, and tissue conditioning. Impression techniques aim to support flabby tissue without displacement. Surgical techniques can provide firm tissue but risk further resorption. Implants avoid tissue support. Severely resorbed ridges have multiple etiological factors and require extensive denture modifications or surgery to improve support and retention.
The document discusses surgical and prosthetic techniques for maxillofacial rehabilitation following cancer resection, noting that the goal is to restore both function and cosmesis through a combination of surgery, such as skin grafting, and prosthetics like obturators and implants to replace missing structures of the face, jaw, and oral cavity.
1) The document discusses different types of occlusion including mutually protected occlusion, group function occlusion, balanced occlusion, and occlusion for complete dentures, removable partial dentures, fixed partial dentures, and osseointegrated prostheses.
2) It describes the desirable characteristics of occlusion for each type of prosthesis, such as bilateral simultaneous contacts, anterior guidance, disclusion of posterior teeth on protrusion, and distribution of forces.
3) The key advantages of different occlusal schemes like mutually protected occlusion and group function occlusion are minimizing tooth contacts and distributing lateral pressures.
This document discusses precision attachments used in removable prosthodontics. It begins with an introduction and history, then covers definitions, classifications, indications, advantages and disadvantages. It describes the selection process for abutment teeth and attachments, including requirements. It examines intracoronal and extracoronal attachments in detail, discussing various types such as the Chayes attachment, O-ring attachment, and bar attachments. It explores the role of attachments in breaking stress and their mechanics of retention. In conclusion, precision attachments can provide improved function, retention and aesthetics for removable partial dentures when the appropriate abutment teeth and attachment are selected.
Implant treatment plan for completely edentulous patientDr. Shashi Kiran
This document discusses classification and treatment planning for completely edentulous patients. It begins by classifying available bone into four categories (A-D). It then classifies edentulous ridges into three types based on bone quality in different regions. Treatment options for the edentulous mandible include removable overdentures (OD1-OD5) supported by 2-5 implants, as well as fixed restorations. The OD options involve placing implants between the mental foramina and adding more implants and connections to improve stability. Fixed options either place implants between the foramina with distal cantilevers or add implants above the foramina to improve support in flexing areas.
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.
Full mouth rehabilitation (FMR) involves extensive restorative procedures to modify the occlusal plane and accomplish equilibration. The goals of FMR are to establish a static centric occlusion in harmony with centric relation, evenly distribute stresses during function, and restore normal masticatory function. FMR is indicated for impaired occlusion, preserving remaining teeth, maintaining periodontal health, improving esthetics, and resolving pain. Diagnostic tools include study models, radiographs, photographs, and diagnostic wax-ups to develop the treatment plan.
JOURNAL CLUB PRESENTATION IN PROSTHODONTICS on ANDREW'S BRIDGE SYSTEMNAMITHA ANAND
This document summarizes a journal club presentation about the Andrews Bridge System. Key points include:
- The Andrews Bridge System is a fixed-removable partial denture that combines fixed retainers connected by a bar with removable pontics for esthetic rehabilitation of edentulous ridges.
- Advantages include improved esthetics, hygiene, phonetics and stress distribution compared to removable partial dentures.
- A clinical case report describes using the system to restore a patient missing maxillary and mandibular anterior teeth following trauma. Post-treatment, the patient had pleasing esthetics and function.
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.
This document provides an overview of full mouth rehabilitation. It defines full mouth rehabilitation according to GPT-8 as restoring the form and function of the masticatory apparatus as nearly normal as possible. It discusses the objectives and indications for full mouth rehabilitation. It classifies full mouth rehabilitation into three categories based on the degree of wear and available space. It reviews different occlusal approaches, schemes, concepts and philosophies for full mouth rehabilitation including balanced articulation, group function and mutually protected articulation. It also discusses Hobo's twin table and twin stage techniques.
Blood pressure & Its Prosthodontic Implication Self employed
This document discusses blood pressure considerations for prosthodontic treatments. It begins by defining hypertension and classifying blood pressure levels. It then covers dental management strategies for patients with hypertension, including only providing conservative treatment for those with poorly controlled high blood pressure. Procedures requiring antibiotic prophylaxis are outlined, as well as implications of medications like NSAIDs and local anesthetics containing vasoconstrictors. Overall, the document provides guidance for prosthodontists on evaluating and treating patients with varying levels of hypertension.
This document discusses implant supported overdentures. It begins by defining an overdenture and explaining how implants can enhance support, retention and stability of dentures. Some key advantages of implant supported overdentures are presented, such as preventing bone loss and improved function. Classification systems for prosthesis movement are covered, along with different types of overdenture attachments like ball attachments and O-rings. The document concludes by outlining two treatment options for implant supported overdentures.
The document summarizes the neutral zone impression technique for constructing complete dentures. It describes the neutral zone as the area where the forces of the tongue pressing outwards are balanced by the forces of the cheeks and lips pressing inwards. The technique involves making an impression of the neutral zone using a tissue conditioner material while the patient performs functions like swallowing and talking to determine the optimal denture position and shape. This impression is then used by the dental technician to construct a wax denture try-in that precisely follows the contours of the neutral zone.
The patient who requires a single denture opposing a natural or restored dentition challenges the clinician even more than the completely edentulous patient does. This is due to the biomechanical differences in the supporting tissues of the opposing arches. So a proper evaluation, correction of the existing factors and proper sequence of denture construction is necessary to give a more stable prosthesis.
Screw vs cement retained implant prosthesisApurva Thampi
This is a journal club presentation featuring a recent article regarding a screw and cement retained implant prosthesis.
the presentation and all its related material is available on request. Mail me at apurvathampi@gmail.com
One of the best seminar of the author. Covered in detail regarding the increasing vertical dimension, centric relation, methods to record centric relation, philosophies of occlusion and in detail everything about full mouth rehabilitation.
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 all-on-6 dental implants procedure is used to replace the entire upper or lower set of teeth. This dental procedure is used to restructure a patient’s mouth, generally done when the patients have lost a significant number of teeth in one or both jaws.
The All-on-6 dental implant procedure creates a permanent prosthesis by using six dental implants. It acts as a support for a bridge or over-denture. Six implants are positioned in the lower or upper jawbone to anchor prosthetic teeth in place permanently.
All-on-6 dental implant offers several benefits such as quick recovery, pearl white smile, no need of removable dentures, patient can bite and chew food, just like natural teeth.
To book an appointment contact :
Dr.Rajat Sachdeva
MDS MS MBA
Director & Mentor
Dr Sachdeva’s Dental Aesthetic And Implant Institute
I 101, Ashok Vihar Phase 1, Delhi- 110052
Contact us at
Phone : +919818894041,01142464041
• Our Websites:
• www.sachdevadentalcare.com
• www.dentalimplantindia.co.in
• www.dentalclinicindelhi.com
• www.dentalcoursesdelhi.com
• Google+ link: https://goo.gl/vqAmvr
• Facebook link: https://goo.gl/tui98A
• Youtube link: https://goo.gl/mk7jfm
• Linkedin link: https://goo.gl/PrPgpB
• Slideshare link : http://goo.gl/0HY6ep
• Twitter Page : https://goo.gl/tohkcI
• Instagram page : https://goo.gl/OOGVig
• For Dentists : https://goo.gl/6t8DD5
this presentation has all the techniques in impression making in the fabrication of an RPD.
The presentation is available on request. Mail me at apurvathampi@gmail.com
The scope of fixed prosthodontics treatment can range from the restoration of a single tooth to the rehabilitation of the entire occlusion. Single teeth can be restored to full function, and improvement in
esthetics can be achieved. Missing teeth can be replaced with fixed prostheses that will improve patient comfort and masticatory ability, maintain the health and integrity of the dental arches, and, in many instances, elevate the patient’s self-image.
The document discusses the neutrocentric concept for arranging teeth in complete dentures. The neutrocentric concept proposes using flat teeth without any inclines in any direction to minimize forces that could cause denture instability. The key aspects are using a single flat plane of occlusion parallel to the residual ridges and eliminating cusps and inclines on posterior teeth to direct forces towards the supporting tissues. This concept aims to preserve residual ridge integrity by preventing destructive forces.
This document discusses provisional restorations, including their importance, requirements, materials used, and how material properties influence treatment outcomes. Provisional restorations act as a temporary restoration while a final restoration is fabricated and must adequately protect the tooth, maintain function and esthetics. Common materials used are acrylics and resin composites, with various advantages and disadvantages to each. Material properties like marginal accuracy, strength and durability are important to provisional success and patient health.
1) The document discusses different types of occlusion including mutually protected occlusion, group function occlusion, balanced occlusion, and occlusion for complete dentures, removable partial dentures, fixed partial dentures, and osseointegrated prostheses.
2) It describes the desirable characteristics of occlusion for each type of prosthesis, such as bilateral simultaneous contacts, anterior guidance, disclusion of posterior teeth on protrusion, and distribution of forces.
3) The key advantages of different occlusal schemes like mutually protected occlusion and group function occlusion are minimizing tooth contacts and distributing lateral pressures.
This document discusses precision attachments used in removable prosthodontics. It begins with an introduction and history, then covers definitions, classifications, indications, advantages and disadvantages. It describes the selection process for abutment teeth and attachments, including requirements. It examines intracoronal and extracoronal attachments in detail, discussing various types such as the Chayes attachment, O-ring attachment, and bar attachments. It explores the role of attachments in breaking stress and their mechanics of retention. In conclusion, precision attachments can provide improved function, retention and aesthetics for removable partial dentures when the appropriate abutment teeth and attachment are selected.
Implant treatment plan for completely edentulous patientDr. Shashi Kiran
This document discusses classification and treatment planning for completely edentulous patients. It begins by classifying available bone into four categories (A-D). It then classifies edentulous ridges into three types based on bone quality in different regions. Treatment options for the edentulous mandible include removable overdentures (OD1-OD5) supported by 2-5 implants, as well as fixed restorations. The OD options involve placing implants between the mental foramina and adding more implants and connections to improve stability. Fixed options either place implants between the foramina with distal cantilevers or add implants above the foramina to improve support in flexing areas.
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.
Full mouth rehabilitation (FMR) involves extensive restorative procedures to modify the occlusal plane and accomplish equilibration. The goals of FMR are to establish a static centric occlusion in harmony with centric relation, evenly distribute stresses during function, and restore normal masticatory function. FMR is indicated for impaired occlusion, preserving remaining teeth, maintaining periodontal health, improving esthetics, and resolving pain. Diagnostic tools include study models, radiographs, photographs, and diagnostic wax-ups to develop the treatment plan.
JOURNAL CLUB PRESENTATION IN PROSTHODONTICS on ANDREW'S BRIDGE SYSTEMNAMITHA ANAND
This document summarizes a journal club presentation about the Andrews Bridge System. Key points include:
- The Andrews Bridge System is a fixed-removable partial denture that combines fixed retainers connected by a bar with removable pontics for esthetic rehabilitation of edentulous ridges.
- Advantages include improved esthetics, hygiene, phonetics and stress distribution compared to removable partial dentures.
- A clinical case report describes using the system to restore a patient missing maxillary and mandibular anterior teeth following trauma. Post-treatment, the patient had pleasing esthetics and function.
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.
This document provides an overview of full mouth rehabilitation. It defines full mouth rehabilitation according to GPT-8 as restoring the form and function of the masticatory apparatus as nearly normal as possible. It discusses the objectives and indications for full mouth rehabilitation. It classifies full mouth rehabilitation into three categories based on the degree of wear and available space. It reviews different occlusal approaches, schemes, concepts and philosophies for full mouth rehabilitation including balanced articulation, group function and mutually protected articulation. It also discusses Hobo's twin table and twin stage techniques.
Blood pressure & Its Prosthodontic Implication Self employed
This document discusses blood pressure considerations for prosthodontic treatments. It begins by defining hypertension and classifying blood pressure levels. It then covers dental management strategies for patients with hypertension, including only providing conservative treatment for those with poorly controlled high blood pressure. Procedures requiring antibiotic prophylaxis are outlined, as well as implications of medications like NSAIDs and local anesthetics containing vasoconstrictors. Overall, the document provides guidance for prosthodontists on evaluating and treating patients with varying levels of hypertension.
This document discusses implant supported overdentures. It begins by defining an overdenture and explaining how implants can enhance support, retention and stability of dentures. Some key advantages of implant supported overdentures are presented, such as preventing bone loss and improved function. Classification systems for prosthesis movement are covered, along with different types of overdenture attachments like ball attachments and O-rings. The document concludes by outlining two treatment options for implant supported overdentures.
The document summarizes the neutral zone impression technique for constructing complete dentures. It describes the neutral zone as the area where the forces of the tongue pressing outwards are balanced by the forces of the cheeks and lips pressing inwards. The technique involves making an impression of the neutral zone using a tissue conditioner material while the patient performs functions like swallowing and talking to determine the optimal denture position and shape. This impression is then used by the dental technician to construct a wax denture try-in that precisely follows the contours of the neutral zone.
The patient who requires a single denture opposing a natural or restored dentition challenges the clinician even more than the completely edentulous patient does. This is due to the biomechanical differences in the supporting tissues of the opposing arches. So a proper evaluation, correction of the existing factors and proper sequence of denture construction is necessary to give a more stable prosthesis.
Screw vs cement retained implant prosthesisApurva Thampi
This is a journal club presentation featuring a recent article regarding a screw and cement retained implant prosthesis.
the presentation and all its related material is available on request. Mail me at apurvathampi@gmail.com
One of the best seminar of the author. Covered in detail regarding the increasing vertical dimension, centric relation, methods to record centric relation, philosophies of occlusion and in detail everything about full mouth rehabilitation.
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 all-on-6 dental implants procedure is used to replace the entire upper or lower set of teeth. This dental procedure is used to restructure a patient’s mouth, generally done when the patients have lost a significant number of teeth in one or both jaws.
The All-on-6 dental implant procedure creates a permanent prosthesis by using six dental implants. It acts as a support for a bridge or over-denture. Six implants are positioned in the lower or upper jawbone to anchor prosthetic teeth in place permanently.
All-on-6 dental implant offers several benefits such as quick recovery, pearl white smile, no need of removable dentures, patient can bite and chew food, just like natural teeth.
To book an appointment contact :
Dr.Rajat Sachdeva
MDS MS MBA
Director & Mentor
Dr Sachdeva’s Dental Aesthetic And Implant Institute
I 101, Ashok Vihar Phase 1, Delhi- 110052
Contact us at
Phone : +919818894041,01142464041
• Our Websites:
• www.sachdevadentalcare.com
• www.dentalimplantindia.co.in
• www.dentalclinicindelhi.com
• www.dentalcoursesdelhi.com
• Google+ link: https://goo.gl/vqAmvr
• Facebook link: https://goo.gl/tui98A
• Youtube link: https://goo.gl/mk7jfm
• Linkedin link: https://goo.gl/PrPgpB
• Slideshare link : http://goo.gl/0HY6ep
• Twitter Page : https://goo.gl/tohkcI
• Instagram page : https://goo.gl/OOGVig
• For Dentists : https://goo.gl/6t8DD5
this presentation has all the techniques in impression making in the fabrication of an RPD.
The presentation is available on request. Mail me at apurvathampi@gmail.com
The scope of fixed prosthodontics treatment can range from the restoration of a single tooth to the rehabilitation of the entire occlusion. Single teeth can be restored to full function, and improvement in
esthetics can be achieved. Missing teeth can be replaced with fixed prostheses that will improve patient comfort and masticatory ability, maintain the health and integrity of the dental arches, and, in many instances, elevate the patient’s self-image.
The document discusses the neutrocentric concept for arranging teeth in complete dentures. The neutrocentric concept proposes using flat teeth without any inclines in any direction to minimize forces that could cause denture instability. The key aspects are using a single flat plane of occlusion parallel to the residual ridges and eliminating cusps and inclines on posterior teeth to direct forces towards the supporting tissues. This concept aims to preserve residual ridge integrity by preventing destructive forces.
This document discusses provisional restorations, including their importance, requirements, materials used, and how material properties influence treatment outcomes. Provisional restorations act as a temporary restoration while a final restoration is fabricated and must adequately protect the tooth, maintain function and esthetics. Common materials used are acrylics and resin composites, with various advantages and disadvantages to each. Material properties like marginal accuracy, strength and durability are important to provisional success and patient health.
The document discusses the etiology of temporomandibular disorders (TMDs). It covers the history and terminology of TMDs and various theories that have been proposed to explain their etiology, including the mechanical displacement theory, trauma theory, biomedical theory, osteoarthritic theory, muscle theory, neuromuscular theory, psychophysiological theory, multifactorial theory, and biopsychosocial model. It also discusses predisposing factors, initiating factors, perpetuating factors, and contributing factors to TMDs. Specific etiologic considerations covered include occlusal factors, trauma, emotional stress, deep pain input, and parafunctional habits.
The document discusses various theories regarding the etiology of temporomandibular disorders (TMDs). It covers early theories that emphasized occlusal factors or trauma, as well as more modern theories that consider TMDs to have a multifactorial etiology influenced by predisposing, initiating, and perpetuating factors. These factors include occlusal condition, trauma, emotional stress, deep pain input, and parafunctional habits. The document also discusses how functional and parafunctional muscle activities can be affected by the occlusal condition.
This document discusses phonetics as they relate to complete dentures. It begins with definitions of speech and phonetics. The history of considerations of phonetics in denture design is reviewed. The normal mechanisms of speech production are described, including the motor, vibrator, resonator, enunciators, and initiator components. Speech sounds are classified and various consonants are discussed in terms of their place and manner of production. The document focuses on considerations for 's', 't', 'd', 'n', 'l', and 'th' sounds and implications for denture design.
This document discusses articulators, which are mechanical devices used to simulate jaw movement. It begins by defining articulators and describing basic mandibular movements. It then discusses the basic components and classifications of articulators, including classifications based on adjustability and the location of condylar elements. Common articulators are described, including the Hanau articulator and mean value articulator. The relationship between the maxilla and mandible is transferred from patient to articulator using records like the facebow transfer and centric jaw relation record.
This document provides information on unconventional fixed partial dentures. It discusses resin bonded fixed partial dentures, including definitions, advantages, disadvantages, indications, contraindications and different types. It describes procedures for tooth preparation and fabrication of resin bonded FPD frameworks. Different designs are covered, including Rochette, Maryland and Virginia bridges. Methods for resin bonding to metal, such as electrolytic etching and macroscopic retention techniques, are also summarized.
This document discusses phonetics as they relate to complete dentures. It begins with definitions of speech and phonetics. The history of considerations of phonetics in denture design is reviewed. The normal mechanisms of speech production are described, including the motor, vibrator, resonator, enunciators, and initiator components. Speech sounds are classified and various consonant groups are defined based on their place and manner of articulation. The document discusses the prosthodontic implications of different speech sounds and examines how denture design can affect speech. Tests for evaluating speech and potential speech defects are also mentioned.
Acrylics are a family of transparent plastics that include polymethyl methacrylate (PMMA). PMMA was first synthesized in 1877 and commercialized in the 1930s for uses like aircraft canopies. It is produced through radical polymerization of methyl methacrylate. PMMA has good clarity, weatherability, and scratch resistance but limited chemical resistance. It finds wide use in glazing, lighting, medical devices, and coatings. Other acrylics include polyacrylamide, used as a flocculant and soil conditioner, and sodium polyacrylate, a super absorbent polymer used in diapers and water-retention products.
2. principles of designing rpd with special emphsis on support and periodr zarir ruttonji
This document provides an overview of principles of removable partial dentures, with a focus on supporting remaining teeth. It discusses indications for RPDs, principles of design, stress considerations, forces acting on partial dentures including levers and fulcrums. It covers biomechanical considerations of individual components like rests, major/minor connectors, direct retainers, and indirect retainers. Clasp designs are discussed as well as strategic clasp positioning to control stresses. The document emphasizes supporting remaining teeth and distributing stresses across components of the partial denture.
This document discusses the different types and functions of minor connectors used in dentures. Minor connectors connect denture teeth to the major connector and provide unification, rigidity, stress distribution, and guidance during insertion. The main types discussed are embrasure minor connectors, which fit between two adjacent teeth, and gridwork minor connectors, which connect multiple teeth and spaces to the major connector. Gridwork comes in mesh or lattice designs and requires relief wax to be placed underneath to allow for acrylic retention. Proper design and placement of minor connectors is important for denture strength and function.
The document discusses centric relation in prosthodontics. It defines centric relation according to GPT-1 and GPT-8 standards. It describes various theories of centric relation including muscle theory, ligament theory, osteofibre theory, and meniscus theory. The document outlines techniques for recording centric relation including the physiological method, graphic method, and functional method. It discusses indications, contraindications, and limitations of different centric relation recording techniques.
The document discusses various materials used in maxillofacial prosthetics. It describes ideal materials as being biocompatible, flexible, colorable, chemically stable, easy to process, and strong. Room temperature vulcanizing materials and modeling materials like clay, plaster, and wax are introduced. The fabrication phase uses extraoral materials like acrylics, vinyl polymers, and elastomers like polyurethane and silicone, which are considered most desirable due to their strength. High temperature vulcanizing silicone provides good strength and detail but requires specialized equipment for processing.
The document discusses various aspects of recording jaw relations and establishing occlusion for removable partial dentures. It covers topics such as determining vertical dimension, recording horizontal jaw relations in centric relation and centric occlusion, methods for establishing the occlusal relationship like direct apposition of casts or using occlusion rims, selection and arrangement of prosthetic teeth, and establishing an occlusal scheme based on the number and position of remaining natural teeth. The goal is to create a harmonious occlusion that provides an efficient and comfortable masticatory mechanism for the patient.
Essentials of clinical periodontology and periodonticsDr.Jaffar Raza BDS
This document provides information about a DVD on clinical periodontology and periodontics. It lists the system requirements to play the DVD, including needing Windows XP or above and Power DVD or Windows Media Player software. It notes that the accompanying DVD is only playable on a computer, not a standalone DVD player. It instructs users to wait for the DVD to automatically run or to manually open the DVD file if it does not auto-run. The document also provides information about the author and publisher of the accompanying book and DVD.
This document summarizes recent advances in implant dentistry. It discusses advances in diagnostic imaging techniques like cone beam CT that provide high quality images with lower radiation. It also discusses advances in implant materials, coatings, and surface modifications like hydroxyapatite that promote faster osseointegration. Surgical techniques have advanced as well, with concepts like all-on-4 that allow for full arch reconstruction in one day. Overall the document outlines the major technological developments that have improved outcomes for dental implant patients.
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 discusses articulators, which are mechanical devices that simulate jaw movement. It covers the purposes, uses, requirements, advantages, limitations, and classifications of articulators. Articulators are used to mount dental casts and simulate jaw motions like opening and closing in order to diagnose occlusion, plan treatments, fabricate dental restorations, and arrange artificial teeth. They must accurately maintain the spatial relationship of dental casts and allow for various jaw motions and records. The document classifies articulators based on their function, the theories of occlusion they are based on, the records they can accept, and their degree of adjustability.
Glass ionomer cement is a tooth-colored dental restorative material introduced in 1972. It bonds chemically to tooth structure and releases fluoride for a long period. It sets via an acid-base reaction between glass powder and polyacrylic acid liquid. Glass ionomer cement has properties like adhesion to tooth structure, anticariogenic activity due to fluoride release, and biocompatibility. However, its strength and esthetics are inferior to dental composites. Modifications to glass ionomer cement include resin-modified and metal-modified varieties to improve strength. The sandwich technique combines the benefits of glass ionomer cement with those of composite resin.
GLASS IONOMER CEMENT AND ITS RECENT ADVANCES- by Dr. JAGADEESH KODITYALAJagadeesh Kodityala
This document provides an overview of glass ionomer cement, including its definition, history, composition, classification, setting reaction, properties, and recent advances. Key points include:
- Glass ionomer cement was invented in 1969 and first reported in 1971, consisting of a glass powder and aqueous solution of polyacrylic acid.
- It is classified based on its intended use, such as luting cement, restorative cement, or liner/base material.
- The setting reaction involves an acid-base reaction between the glass powder and polyacrylic acid, forming bonds through a calcium polyacrylate matrix that continues to harden over time.
- Properties include adhesion to tooth structure, biocompatibility, fluoride
Acid etches bridges and its scope/certified fixed orthodontic courses by Indi...Indian dental academy
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Decision Making in Restoration of Endodontically-Treated TeethMohamed Zeglam
This document discusses decision making in the restoration of endodontically treated teeth. It covers various types of posts that can be used including pre-fabricated and custom made posts. It discusses the ferrule effect and how it helps prevent root fractures. Fiber posts are described as a viable alternative to cast metal posts that have advantages like elasticity similar to dentin. Proper adhesion and cementation techniques are important when using fiber posts. Indications and contraindications of different post systems are provided. The document emphasizes selecting the most suitable post and core system based on the clinical situation and amount of remaining tooth structure.
The document discusses principles of tooth preparation for restorations. It covers 3 main categories: biologic considerations to protect surrounding tissues, mechanical considerations to provide retention and resistance for the restoration, and esthetic considerations for appearance. Specific topics include margin placement, adaptation and geometry, conservation of tooth structure, prevention of pulpal damage, and providing adequate taper, surface area, and freedom of displacement for retention.
This document describes a technique for repairing fractured porcelain on a porcelain-fused-to-metal bridge pontic. The key steps are to prepare the fractured area by removing porcelain and extending into the metal to gain surface area for bonding, take an impression, fabricate a porcelain overlay crown with a metal coping that fits into the prepared area like a puzzle, and cement it in place with resin cement. This repair procedure is less costly and invasive than replacing the entire bridge, though case selection is important to identify fractures that could reoccur.
Resin bonded bridge: A forgotten first frontier for an aesthetically critical...iosrjce
This case report describes the restoration of a missing maxillary right central incisor in a 17-year-old male patient using a resin bonded bridge (RBB). A RBB was determined to be the most suitable treatment option given the patient's young age, financial limitations that precluded an implant, and presence of an anterior open bite. The abutment teeth were prepared with intra-enamel reductions and grooves to allow path of insertion for a three-unit RBB framework. The framework was fabricated from nickel-chromium alloy and cemented in place using resin cement. At follow-up the patient was satisfied with the aesthetic results and RBB was concluded to be an excellent treatment for restoring this aesthetically critical ed
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This document discusses failures in fixed partial dentures (FPDs). It begins by summarizing early writings on FPD failures from 1920, which identified faulty diagnosis, infection, disregard for tooth form, improper embrasures and interproximal spaces, and faulty occlusion as causes. It then classifies FPD failures into categories such as loss of retention, mechanical failures of components, changes in abutment teeth, design failures, inadequate technique, and occlusal problems. Under each category, specific causes and types of failures are detailed. The document provides an in-depth overview of FPD failures and their causes.
This document discusses resin bonded fixed partial dentures (RBFPDs). It defines RBFPDs as prostheses that are luted to tooth structure using composite resin. Various types are described, including cantilever, fixed-fixed, and hybrid bridges. Advantages include reduced cost and minimal tooth preparation. Indications are for replacing single missing teeth with caries-free abutments. A case example describes using an RBFPD to replace a missing mandibular incisor and splint mobile abutment teeth.
Provisional crowns or fixed partial dentures are essential to successful Prosthodontic therapy. The word provisional means established for the time being, pending a permanent arrangement.
Unfortunately the term temporary is quite often used which denotes something of little value. After tooth preparation, a temporary protective/functional restoration is fabricated over the prepared tooth to be used until the fabrication of the final prosthesis.
Failures in Fixed Partial Denture
(Prosthodontics FPD- Dental science)
Various types of failures in the fabrication of fixed partial denture
Dr.Sachin Sunny Otta
St.Gregorios Dental College,Kothamangalam,Ernakulam
This document discusses various types of unconventional fixed partial dentures. It begins by describing fixed partial dentures and their classification based on support provided. The main types discussed are:
- Fixed-fixed bridges which provide rigid support on both ends of the pontic and require more tooth reduction but provide maximum retention and strength.
- Cantilever bridges which provide rigid support at one end only and are more conservative but the pontic requires rigid construction to avoid distortion.
- Spring cantilever bridges which use a long metal arm for support of a single pontic.
Other types discussed include resin-retained bridges using minimal preparation, Maryland bridges using electrolytic etching for micromechanical retention, and fiber
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 resin bonded fixed partial dentures (FPDs). It begins by defining resin bonded FPDs and describing their history. It then covers indications and contraindications, advantages and disadvantages, classifications based on retention type, and fabrication process including tooth preparation, impressions, provisionals, and bonding. Resin bonded FPDs are adhesive bridges that replace missing teeth using thin metal retainers bonded to abutment teeth with resin cement. They conserve tooth structure and have advantages over traditional FPDs like reduced cost and chairtime.
This document discusses resin bonded fixed dental prostheses (FPDs). It begins by defining resin bonded FPDs as bridges that are bonded to etched enamel using resin cement, providing mechanical retention without preparation of dentin or pulp. It then covers the indications and contraindications, advantages and disadvantages, classifications including mechanical, micromechanical, macromechanical and chemical types, fabrication process including tooth preparation and bonding, and concludes that resin bonded FPDs can be viable options when carefully indicated and fabricated, requiring the same attention to detail as conventional FPDs.
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.
This document discusses the restoration of endodontically treated teeth. It begins by outlining the changes that occur to teeth after endodontic treatment, including loss of tooth structure and changes to physical and esthetic characteristics. It then discusses general considerations for restoring such teeth, including risks of fracture or reinfection. Various factors for treatment planning are outlined, including remaining tooth structure, position, function, and esthetics. Types of posts are described, including active vs. passive posts and various materials. Key principles for posts involving retention, resistance, length, preservation of tooth structure, and the ferrule effect are explained.
The document discusses recent advances in prosthodontics presented by Dr. J. Koshy Joseph. It covers various topics including complete dentures, fixed partial dentures, removable partial dentures, maxillofacial prosthetics, implantology, materials and instrumentation. New techniques and materials discussed include the use of lasers in denture fabrication, CAD/CAM systems for complete dentures, magnets and denture liners in prosthodontics, and all-on implants. The document provides an overview of the latest developments across different areas of prosthodontics.
This document discusses principles of tooth preparation. It begins by defining tooth preparation as the process of removing tooth structure to receive a restoration. The principles of tooth preparation aim to satisfy biologic, mechanical, and esthetic needs. Specifically, it is important to preserve tooth structure, provide adequate retention and resistance form, maintain structural integrity of the restoration, ensure marginal integrity, and preserve the periodontium. Factors like taper, surface area, and roughness influence the retention of a restoration. Care must also be taken to avoid damaging adjacent teeth, soft tissues, or the pulp during preparation.
Bridge and Pontic Design 2023,by dr. Mohammed Alqadasi.
talking about the principles and considerations for proper bridge and pontic design , the pretreatment assessment and evaluation ,type of fixed partial denture and type of pontic , stage of design,and materials that used.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
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How to Make a Field Mandatory in Odoo 17Celine George
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it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
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Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
4. Procedures
1. Tooth preparation
2. Fabrication of the frame work
3. Bonding of the restoration
Fiber Reinforced Composite Resin FPD
F i x e d / d e t a c h a b l e ( h y b r i d )
Summary
References
4
9. DEFINITION
According to the glossary of prosthodontic terms
Resin bonded prosthesis: A prosthesis that is
luted to tooth structures primarily enamel
which has been etched to provide mechanical
retention for the resin cement.
Goal:
Replacement of missing teeth and maximum
conservation of tooth structure.
9
10. Advantages
1. Minimal removal of tooth structure.
2.Non invasive to dentin
3. Minimal potential for pulpal trauma.
4. Tissue tolerant because of supragingival
margins without gingival irritation.
10
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 3rd ed
11. 5. Esthetically more appealing since only lingual surface
of anterior teeth are covered
6. No anesthesia hence less trauma to patient.
7. Simplified impression procedures
8. Interim restorations usually not required.
11
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 3rd ed
12. 9. Reduced chair side time
10. Reduced patient cost…
11. Re-bonding possible.
12Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd
ed. Mosby Harcourt brace and Co; 2001
13. Disadvantages
1. Reduced restoration longevity
2. Enamel modifications are required
3. Good alignment of teeth are needed
4. Very thin or translucent anterior teeth are
limiting factor because of esthetics.
5. Usually restricted to single tooth
replacement
13
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
14. 6. No space and alignment correction.
7. Difficult temporization.
8. Uncertain longevity.
9. Esthetics is compromised on posterior teeth
replacement.
14
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
15. INDICATIONS
1. Replacement of congenitally missing tooth or
teeth lost by traumatic injuries especially in
young patients.
2. Splinting of periodontally compromised teeth.
3. Stabilizing dentition after orthodontic
treatment or movement.
4. Short span and in case on open bite.
15
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
16. 5. Retainers of FPD for abutment with sufficient
enamel to etch for retention.
6. Significant crown length.
7. Unrestored abutments.
8. Medically compromised and adolescent
patients.
16
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
17. CONTRAINDICATIONS
1. Patients sensitivity to base metal alloy.
2. Parafunctional habits.
3. Long span involving 3 or more abutments.
4. Restored or damaged abutments.
5.Compromised enamel.
17
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
18. 6. Significant pontic discrepancy.
7. Deep vertical overlap.
8. When facial esthetics of abutment require
improvement eg: stained, malformed or
malposed teeth.
9. Insufficient occlusal clearance to provide 2-3
mm vertical retention. eg: abraded teeth.
10. Incisors with extremely thin facilingual
dimension
18
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
19. Types Of Resin Bonded Fixed
Partial Denture Designs
1) Rochette
2) Maryland
3) Virginia
4)Fungs
19
20. CAST PERFORATED RESIN-RETAINED
FPDS: (ROCHETTE BRIDGE)
Alain Rochette in 1973
introduced this type of
bridge.
Bonding through
mechanical retention.
The metal retainer had
flared perforation so that
the bonding material gets
locked mechanically.
20
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
21. To prevent weakening
of the framework-
Too large and too
closely placed
perforations should
be avoided.
The perforations
should be
approximately 1 mm
apart and have a
maximum diameter
of 1.5mm.
21
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
22. Replacement of
posterior teeth –
Livaditis
Extension –
interproximally and
onto occlusal
surfaces.
Survival rate -3
years
22
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
23. ADVANTAGES
1) It is easy to see the retentive perforations in
the metal.
2) If the bridge must be replaced, the composite
resin can be cut away in the perforations to
aid in the removal process.
3) No metal etching is required.
23
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
24. Disadvantages
1) The perforations would weaken the retainers
if improperly sized or spaced.
2) The exposed resin is subjected to wear.
3) It is not possible to place perforations in
proximal surface or in the rest.
24
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
25. ETCHED CAST RESIN RETAINED FPDS:
(MARYLAND BRIDGE)
Thompson and
Livaditis developed
this type of FPD at
University of
Maryland.
The retention is
micro mechanical
ie, through
electrolytic etching
of Ni-Cr and Cr-Co 25
26. Lividatis and Thompson used a
3.5% solution of nitric acid with a current of 250 mA/cm
for 5 min,
Followed by immersion in an 18% hydrochloric acid
solution in an ultrosonic cleaner for 10 min
This technique was specific to non beryllium nickel
chrome alloy.
26
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
27. Thompson et al reported that
10% sulphuric acid at 300 mA/cm2,
followed by same cleaning methods, would
produce similar results in beryllium
containing nickel chrome alloy.
27
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
28. Advantages
1. It is reported to have improved bond
strength.
2. Retention is improved because the resin-to-
etched metal bond can be substantially
stronger than the resin-to-etched enamel.
3. Instead of perforations, the tooth side of
the framework is electrolytically etched,
which produces microscopic undercuts.
28
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
29. 4. It can be used for both anterior and posterior
bridges
5. The retainers can be thinner and still resist
flexing.
6. The oral surface of the cast retainers is highly
polished and resists plaque accumulation.
29
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
30. Disadvantages
Although this design has been reported to be
stronger, it is more technique sensitive
because the retainers may not be properly
etched or may be contaminated before
cementation.
Because the retentive features are not seen with
the unaided eye the etched surface must be
examined with a microscope to verify proper
etching.
30
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
31. 3. MACROSCOPIC MECHANICAL RETENTION
RESIN RETAINED FPD: (VIRGINIA BRIDGE)
Moon and Hudgins et al produced particle roughened
retainers by incorporating salt crystals into the
retainer patterns to produce roughness on the inner
surfaces.
This method is also known as lost salt technique
31
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
32. LOST SALT TECHNIQUE
The framework is outlined on the die with a wax
pencil and the area to be bonded is coated first
with model spray and then with lubricant.
Sieved cubic salt crystal (NaCl), ranging in size
from 150 to 250 mų are sprinkled over the
outlined area.
32
The retainer patterns are fabricated from resin
leaving 0.5 to 1.0mm wide crystal free margin
from the outlined area.
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
33. Application of resin pattern
Pattern investment,salt crystals are dissolved
from the surface
33
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
37. Advantages
1. It is of lower cost compared to custom made
resin – bonded bridges.
2. No need of impression making and laboratory
work.
3. Can be given to patient in a single appointment.
4. Good esthetics no exposure of metal in
proximal areas.
5. Longevity comparable to resin bonded bridges
http://www.fung-international.com/pdf/DI.pdf
38. FABRICATION of RBFPD
38
In fabrication of resin retained fixed partial
dentures, all three phases are necessary
for predictable success:
1) Preparation of abutment
teeth.
2) Design of restoration
3) Bonding of restoration.
Whether anterior or posterior teeth are
prepared common principles dictate tooth
preparation design.Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
39. 39
Anterior tooth preparation and
frame work design
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
40. The finish line on the proximal surface adjacent
to the edentulous space should be placed as far
facially as is practical. Abutments should have
parallel proximal surfaces.
40
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
41. An optional slot, O.5mm in depth, prepared with
a tapered carbide bur, may be placed slightly
lingual to the labial termination of the
proximal reduction.
41
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
42. 42
Leave the margins about 1mm for the incisal or
occlusal edge and 1mm supragingival if possible.
Wherever possible to enhance resistance more
than half the circumference of the tooth should
be prepared.
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
43. Preparation of mandibular anterior teeth is
similar to that for the maxillary incisors.
Lingual enamel thickness is 11 to 50 percent
less than for maxillary teeth and
consequently tooth preparation must be more
conservative.
43
44. Posterior tooth preparation and
framework design
The basic framework consists of three major
components.
1. The occlusal rest (for resistance to gingival
displacement)
2. The retentive surface (for resistance to occlusal
displacement)
3. The proximal wrap (for resistance to torquing
forces).
44
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
45. A spoon shaped
occlusal rest seat is
placed in the
proximal marginal
ridge area of the
abutments adjacent
to the edentulous
space. An
additional rest seat
may be placed on
the opposite side of
the tooth. 45
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
46. To resist occlusal displacement, the restoration
is designed to maximize the bonding area
without unnecessarily compromising
periodontal health or esthetics.
46
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
47. Proximal and lingual walls are reduced to
lower their height of contour to
approximately Imm. The proximal wall are
prepared so that parallelism results without
undercuts. 47
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
48. The bonding area
can be increased
through extension
onto the occlusal
surface provided it
does not interfere
with the occlusion.
Generally a knife-
edge type of
margin is
recommended.
48
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
50. In general, the preparation differs between
maxillary and mandibular molar teeth on
the lingual surface only. The lingual wall of
mandibular tooth may be prepared in a
single plane and the palatal surface of
maxillary molars dictates a two plane
reduction due to taper of these centric cusps
in the occlusal two thirds and occlusal
function.
50
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
51. Resin to metal bonding
Metal resin bonding can be classified as either
51
Rosenstiel, Land, Fujimoto. Contemporary fixed prosthodontics. 3rd ed.
52. Electrolytic etching:
In this procedure microscopic porosity is
created in the fitting surface of a nickel
chromium framework by electrolysis.
Procedure
Clean the fitting surface of metal restoration
with an air abrasion unit with aluminium
oxide.
Cover the polished surfaces with wax and attach
the prosthesis to an electrolytic etching unit
following the manufacturers instructions.
52
Michel Degrange: Minimally invasive restoration with bonding
53. A typical etching cycle will be 3 minutes in
10% H2SO4 with a current of 300 milliamp
per square centimeter of casting surface.
Clean the etched surface ultrasonically in 18%
HCI, then wash and air-dry it.
The etched surface must not be handled after
this stage.
53
Michel Degrange: Minimally invasive restoration with bonding
54. Chemical etching
A gel consisting of nitric and hydrochloric acid
is applied to the internal surface of the metal
framework for approximately 25 minutes.
As electrolytic etching is extremely sensitive,
many authors believe that chemical etching
provides more reliable results due to
procedural simplicity.
54
Michel Degrange: Minimally invasive restoration with bonding
55. Silicoater Classical
Tiller et al (1984)
Procedure – sand blasting of alloy
Flame coating of silica-carbon for 5
minutes,thus the surface bonds to composite
Disadvantage –
1. Expensive
2. Uneven distribution of flame
3. Chemically unstable silica layers
4. Protection of the layer formed
55
Michel Degrange: Minimally invasive restoration with bonding
56. Rocatec System
Introduced in 1989
The metal surface is abraded with 120microns
alumina
Followed by abrasion with silicate particle-
containing alumina.
Silane application thus adhesive to composite
resin.
56
57. MACROSCOPIC
RETENTION
In non-perforated retainer, porosity is cast
in the pattern itself rather than
subsequently obtained by etching.
This is done in variety of ways:
1. Lost salt technique.
2. One techniques uses a special pattern to
form a meshwork on the fitting surface and
the external lingual surface is waxed to
give a smooth finish that can be highly
polished.
57
58. Advantages
1. any alloy can be selected, whereas with
electrolytic or chemical etching the alloy
usually must be nickel chromium.
2. try-in and bonding of the prosthesis can be
accomplished at the same appointment.
58
59. Disadvantages
1. Difficulty on adapting the mesh to create a
closely fitting metal framework
2. A potentially thicker metal framework than
can be obtained with a etched metal retainer
3. The rate of microleakage along the cast mesh
composite resin interface is significantly
greater than along an etched metal resin
interface 59
60. Tin plating is a recently introduced procedure
that can improve the strength of adhesive
cement to most metals.
Precious alloys can be plated with tin and used
as frameworks for resin retained fixed partial
dentures.
Tin forms organic complexes with several
specific adhesive resin cements that result in 60
TIN PLATING (CHEMICAL BONDING)
61. BONDING AGENTS
Composite resins play an important role in the
bonding of the metal framework to etch
enamel. They conatin
I) Filled BisGMA composite resin (Bisphenol A
glycidil methacrylate).
2) TEGDMA (Triethylene glycel
dimethacrylate).
3) 4META (4 methacrylyloxethyl trimellifate
61
62. Cements with adhesion
promoters
PANAVIA
Components: low viscosity paste, radio opaque
composite resin paste
Universal and catalyst
Composition : Bisphenol-A-Polyethoxy
dimetharyclate,
MDP or 10-Methacrloxydecyl dihydrogen
phosphate, 77%silanated organic fillers.
63. Mixing time : 20-30 sces
Film thickness: 19 microns
Metal surface must be sandblasted or tin
coated.
Recent version – PANAVIA F
70. Post operative care
Regular recall visits
Check for any debonding
Caries
Periodontal health
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
71. Fiber Reinforced Composite Resin
FPD
1. Consists of a fibre reinforced substructure
2. Veneered with composite material
3. Increased flexural strength , fracture
resistance & increased tensile strength
4. Transluscent
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
72. Types Of Fibres
1. Glass
2. Polyethylene
3. Polypropylene
4. Carbon
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
74. Procedure
1. Preparation of abutment
teeth
2. Measurement of fiber
length
3. Moistening of fiber
4. Fiber bar pressed into the
preparation & polymerised
with resin
5. Pontic build up & curing
H.T Shillingburg, . Fundamentals of fixed Prosthodontics. 1st ed
75. FIXED REMOVABLE FPD
Fixed-movable Bridge–
These are similar to fixed-fixed bridges but
have a movable joint (not detectable by the
patient) allowing the use of a bridge when
retaining teeth that are not favourably
aligned.
Eg:- Andrews bridsge
75
76. FIXED REMOVABLE FPD
Andrews bridges:-
Fixed removable partial dentures are particularly
indicated for patients with extensive supportive tissue
loss and when the alignment of the opposing arches
and/or esthetic arch position of the replacement teeth
create difficulties
76
J Prosthet Dent. 1983 Aug;50(2):180-4
77. 77
A FIXED REMOVABLE PARTIAL DENTURE
TREATMENT FOR SEVERE RIDGE DEFECT
Int J Dent Case Reports 2011; 1(2): 112-118
79. 79
1.Where aesthetics is of prime importance .
2.Where the teeth on either side of the space
are unsuitable as abutments because there is
insufficient retention or the teeth are
periodontal disturbed and unable to carry
additional load .
3.Where a Diastema is need to be preserved on
one or both sides of the pontic .
INDICATIONS :
80. 80
1.In young patients where the clinical crowns are
short and
of inadequate retention .
2.When the teeth on either side of the space need
crowning in
replacement of lower tooth .
3.When the shape of the palate is unfavorable .
4.Where there is sever soft tissue loss .
5. When the proposed abutment tooth is
unopposed or
CONTRAINDICATIONS :
Conservation of the tooth structure has been one of the main goals of restorative dentistry. Conventional procedures for the preparation of abutment teeth often involve major removal of tooth structure. However, when the abutment is sound, conventional full coverage procedures seem quite radical
More conservative procedures, such as partial veneer crowns or pin-retained restorations, present limitations in esthetics and retention. Many patients object to these drawbacks and consequently choose removable partial dentures which may not be used. Recent innovations in the acid-etch technique have led to new alternatives to traditional treatment for esthetic and restorative procedures.
Goal:
The primary Goal of the resin retained fixed partial denture is the replacement of missing teeth and maximum conservation of tooth structure.
In 1973, Rochette introduced the concept of bonding
metal to teeth using flared perforations of the
metal casting to provide mechanical retention. He
used the technique principally for periodontal
splinting but also included pontics in his design.
Howe and Denehy recognized the metal framework's
improved retention (as compared to bonded
pontics) and began using FPDS with cast-perforated
metal retainers bonded to abutment teeth and
metal-ceramic pontics to replace missing anterior
teeth. Their design recommendation, extending the
framework to cover a maximum area of the lingual
surface, suggested little or no tooth preparation. Patient
selection limited these FPDs to mandibular
teeth or situations with an open occlusal relationship.
The restorations were bonded with a heavily
filled composite resin as a luting medium.
This concept was expanded to replacement of
posterior teeth by Livaditis. Perforated retainers
were used to increase resistance and retention. The
castings were extended interproximally into the
edentulous areas and onto occlusal surfaces. The
design included a defined occlusogingival path of
insertion by tooth modification, which involved
lowering the proximal and lingual height of contour
of the enamel on the abutment teeth. These restorations
were placed in normal occlusion; many have
survived and have been seen on recall for up to 13
years (Fig. 26-2). Despite this success, the perforation
technique presents the following limitations:
• Weakening of the metal retainer by the
perforations
Exposure to wear of the resin at the perforations
Limited adhesion of the metal provided by the
perforations
Clinical results with the perforated technique
were followed for 15 years in a study at the University
of Iowa.'-' The results from this well-controlled
Fig. 26-2. Lingual view of an early perforated resinbonded
FPD replacing a premolar at the 13-year recall. Note
the loss of resin from the perforations, the poor gingival embrasures,
and the generalized wear of the occlusal composite
resin restoration on the molar abutment.
study suggest that for anterior fixed partial dentures,
63% of the perforated retainer prostheses fail
in about 130 months.'6 Later data'-' indicate that 50%
fail in about 110 months (Table 26-1).
The slots in the proximal surface of adjacent teeth are prepared 1.5 mm towards pulp cavity and 0.5 mm gingivally as an interlocking mechanism. This type of preparation will prevent gingival movement of the bridge as well as provide retention.
The bridge post is then inserted into the pontic channel in the fung shell provided and slide into the prepared abutment teeth, and adjustments are made accordingly.
The fung shell can be adjusted for proper contact with tissues with a bur.
The fung shell bridge is cemented using light curing composite, and finished and polished.
The alloy framework should be designed to engage at least 180 degrees of tooth structure when viewed from the occlusal. This proximal wrap allows the restoration to resist lateral loading by engaging the underlying tooth structure. It should not be possible to remove a properly designed resin bonded F.P.D. in any direction but parallel to its path of insertion
Primarily mechanical bonding is subdivided into:
1) Micro mechanical retention - which uses etching to create microscopic porosities and
2) Macro mechanical retention - which relies on visible undercuts usually with a mesh or pitted metal.
Chemical bonding generally employs tin plating of metal framework and specific resin adhesives for metal and enamel.
One of the basic principles of tooth preparation for fixed prosthodontics is conservation of tooth structure.
This is the primary advantage of resin-retained FPDs.
Precision and attention to detail are just as important in resin-retained fixed partial dentures as they are in conventional prosthesis.
Careful patient selection is an important factor in predetermining clinical success.