Retainers in fpd
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This document discusses different types of retainers used for fixed partial dentures (FPDs). It describes extracoronal retainers including full metal crowns, all-ceramic crowns, and metal-ceramic crowns. Partial veneer crowns and resin-bonded retainers are also covered. Intracoronal retainers include inlays and onlays. Radicular retainers involve a post and core for endodontically treated teeth. Telescopic retainers are used when the path of insertion does not align with the tooth's long axis. The document provides details on the indications, contraindications, advantages, and disadvantages of each type of retainer.
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This document discusses different types of retainers used for fixed partial dentures (FPDs). It describes various retainer options including full coverage crowns, partial coverage crowns, and conservative retainers. Full coverage crowns provide maximum retention but require extensive tooth preparation. Partial coverage crowns are more conservative but less retentive. Conservative retainers like resin-bonded FPDs require minimal preparation but do not accept heavy loads. The document outlines the characteristics, advantages, disadvantages, and indications for different retainer options.
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- Endodontic instruments have evolved over time to have standardized sizes and tapers. Ingle and LeVine suggested standardizing diameters that increase by 0.05mm while maintaining a constant taper.
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This document discusses different types of dental retainers used in fixed prosthodontics (FPD). It classifies retainers as either extracoronal or intracoronal, and describes various extracoronal retainers including full veneer crowns made of full metal, full ceramic, or metal-ceramic; partial veneer crowns; and resin-bonded retainers. Requirements, indications, contraindications, advantages and disadvantages are provided for each type. Intracoronal retainers discussed include inlays and onlays. Radicular retainers are also summarized, which involve a post and core to retain a crown on an endodontically treated tooth.
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1. A tooth supported overdenture is a removable partial or complete denture that covers and receives support from one or more remaining natural teeth or dental implants.
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Fluid control and soft tissue management are important for maintaining a dry operating field during dental procedures. Moisture can be generated from saliva, blood, water, and gingival crevicular fluid. Both mechanical and chemical methods are used to control fluids. Mechanical methods include rubber dams, high volume suction, saliva ejectors, cotton rolls, and retraction cords. Chemical methods use anti-sialagogues or local anesthetics administered systemically, or vasoconstrictors and astringents applied topically via retraction cords. Recent advances allow for improved visibility, access, and infection control during procedures through advances in fluid control techniques.
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This document discusses factors to consider when selecting abutment teeth for fixed partial dentures (FPDs). It defines an abutment tooth and outlines how to assess potential abutments, including taking radiographs and evaluating crown morphology, root configuration, crown-to-root ratio, and other anatomical features. Good abutment teeth are vital with adequate bone and root support and crown structure to withstand forces from the FPD. Location, occlusion, tooth structure and root health must be optimized for successful force distribution from the prosthesis.
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This document provides an overview of surveying and surveying tools used in the process of designing removable partial dentures (RPDs). It discusses the history and development of surveying, types of surveyors, principles of surveying including survey lines and path of insertion. The document outlines the step-by-step survey process including orienting the cast, tilting, marking survey lines, measuring undercuts, identifying interferences, and tripoding the cast for future reference. Various surveying tools such as the analyzing rod, carbon marker, undercut gauges, and wax trimmers are also described.
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This document provides an overview of functional appliances used in orthodontic treatment. It begins with definitions of functional appliances and a brief history of their development. It then discusses the basis, classification, forces, treatment principles, indications, actions, case selection, and common appliances like the activator, frankel regulator, bionator, twin block, and Herbst appliance. It provides details on their design, indications, mode of action, and advantages. In summary, the document serves as a comprehensive guide to functional appliances, their development and use in orthodontic treatment.
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Fixed partial dentures transmit forces through the abutments to the periodontium. Failures are due to poor engineering, the use of improper materials, inadequate tooth preparation, and faulty fabrication. Of particular concern to prosthodontist is the selection of teeth for abutments. They must recognize the forces developed by the oral mechanism, and resistance.
Successful selection of abutments for fixed partial dentures requires sensitive diagnostic ability. Thorough knowledge of anatomy, ceramics, the chemistry and physics of dental materials, metallurgy, Periodontics, phonetics, physiology, radiology and the mechanics of oral function is fundamental.
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This document discusses the frenum attachment in the oral cavity, its development and variations. It describes different types of frenum attachments and associated syndromes like Ehlers-Danlos syndrome. Complications of an abnormal frenum like gingival recession and difficulty brushing are mentioned. Treatment techniques for abnormal frenum like frenectomy and frenotomy using conventional, Z-plasty, and laser methods are summarized. Post-operative instructions are provided.
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This document discusses different types of retainers used for fixed partial dentures (FPDs). It describes various retainer options including full coverage crowns, partial coverage crowns, and conservative retainers. Full coverage crowns provide maximum retention but require extensive tooth preparation. Partial coverage crowns are more conservative but less retentive. Conservative retainers like resin-bonded FPDs require minimal preparation but do not accept heavy loads. The document outlines the characteristics, advantages, disadvantages, and indications for different retainer options.
Obturator ppt
The document discusses the classification and design principles of obturators for partially edentulous patients. It presents a 6-class classification system for maxillary defects based on the location and extent of the resection. The classes range from a midline defect (Class I) to a bilateral posterior defect (Class V). Design principles are provided for each class, focusing on support, retention, and stabilization. Support is primarily through rests on abutment teeth and palatal tissues. Retention uses direct and indirect retainers on abutment teeth. Stabilization incorporates guide planes and tripodal/quadrilateral designs when possible. The goal is to distribute forces optimally and minimize movement of the prosthesis.
Standardisation of endodontic instruments
- Endodontic instruments have evolved over time to have standardized sizes and tapers. Ingle and LeVine suggested standardizing diameters that increase by 0.05mm while maintaining a constant taper.
- Instruments are now numbered 6-140 based on tip diameter in hundredths of a millimeter. The diameter increases 0.32mm over the first 16mm of the instrument.
- Instruments can be hand operated, low-speed, engine-driven, or ultrasonic/sonic and are used for cleaning and shaping root canals.
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1. Space maintainers are appliances used to maintain space created by premature tooth loss. They prevent crowding, impaction, and other issues by holding space open.
2. Common space maintainers include band and loop, crown and loop, lingual arch, Nance palatal arch, and removable appliances. The best option depends on factors like time since tooth loss and dental age.
3. Space maintainers are generally indicated when space is closing, future orthodontics may be simplified, or to prevent issues like supraeruption. They are contraindicated if space isn't closing or the succedaneous tooth is absent.
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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.
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This document discusses the key components of a fixed partial denture (FPD), including retainers, pontics, and connectors. It defines each component and describes their classification and ideal requirements. For retainers, it covers types based on tooth coverage (full, partial, conservative), retention mechanism (extracoronal, intracoronal, radicular), and materials. Ideal pontic requirements are outlined as well as types classified by material and fabrication method. Connector types include rigid (cast, soldered) and non-rigid (tenon-mortise, split pontic) varieties. Indications and advantages/disadvantages of each component are summarized to aid in proper FPD design.
Parts of fixed partial denture
This document discusses the key components of a fixed partial denture (FPD), including retainers, pontics, and connectors. It defines each component and describes their classification and ideal requirements. For retainers, it covers types based on tooth coverage and retention mechanism, as well as criteria for selection. Pontic types include those with and without mucosal contact. Connectors are categorized as rigid or non-rigid, with examples like cast, soldered, and loop connectors. The document provides indications, advantages, and disadvantages of different retainer, pontic, and connector designs.
Post and core
This document discusses the prosthodontic management of endodontically treated teeth through post and core restoration. It provides background on the historical development of post and core systems. It describes the characteristics of endodontically treated teeth and outlines the principles and methodology for post and core treatment, including post selection, preparation, and fabrication. Key factors that influence post and core treatment like remaining tooth structure, ferrule effect, stresses, and materials are discussed. The document serves as a guide for proper prosthodontic management of teeth requiring post and core restoration.
Removable partial denture _ Midterm
This document provides an introduction to removable partial dentures (RPDs). It defines key terminology like prosthesis, dentulous, edentulous, and abutment. It discusses the objectives and indications for RPDs, including preserving remaining tissues, replacing missing teeth, restoring function and esthetics. It also covers classifications of partial edentulism, components of RPDs like bases, teeth, and connectors, and different materials that can be used like acrylic and metal. Hazards of improper RPD design and advantages over fixed partial dentures are summarized.
RCT fixed expert 23-24pptx.pdf second part
The document discusses several factors that are important for restoring endodontically treated teeth, including the need for full coverage restorations, use of posts, and biologic width considerations. It notes that adequate coronal restoration is equally as important as endodontic treatment. Factors like tooth type, structure loss, and occlusal stresses determine need for full coverage restorations. Post length, diameter, and ferrule effect are important principles for restoring teeth with posts. Techniques for managing severely damaged teeth like crown lengthening and orthodontic extrusion are also covered.
Fpdarun M K
Prosthodontics involves the diagnosis, treatment, and maintenance of patients with missing or deficient teeth using biocompatible substitutes. It has branches including fixed and removable prosthodontics. A fixed partial denture is a partial denture that is securely attached to abutment teeth, roots, or implants to provide primary support. It is used when one or two adjacent teeth are missing and the patient's health and oral hygiene allows for placement. Common fixed prosthodontic items include crowns, inlays, onlays, abutments, pontics, and connectors. Materials may include metals, ceramics, or composites depending on the specific needs of the patient.
Over denture(s)
Presentation much appreciated at DENTAL college at pakistan.Simple and accurate explanation of overdenture.
Similar to Retainers in fpd (20)
silo.tips_overdentures-presented-by-department-of-prosthodontics-implantology...
silo.tips_overdentures-presented-by-department-of-prosthodontics-implantology...
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5. ECG in Medical Practice by ABM Abdullah, 4th edition
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Retainers in fpd
- 1. RETAINERS IN FPD Dr Sunil Kumar Mishra DEPARTMENT OF PROSTHODONTICS
- 2. What is a Retainer? • It’s that component of an FPD which takes support from the abutment tooth and provides retention to the prosthesis.
- 3. CLASSIFICATIONS 1.EXTRACORONAL A. Fullveneer Crown a. Complete metal b. Full ceramic c. Metal ceramic B. PARTIAL VENEER CROWN a. Anterior 3/4 crown b. Posterior 3/4 crown c. Seven eight crown C. RESIN BONDED RETAINERS 2.INTRACORONAL a.inlyas b.Onlyas 3.RADICULAR RETAINERS
- 4. REQUIREMENTS 1. Withstand masticatory forces 2. Restore anatomy of tooth 3. Pulp consideration 4. Esthetics 5. Hygienic
- 5. These retainers cover all the five surfaces of the abutment tooth. FULL COVERAGE RETAINER
- 6. FULL METAL CROWN RETAINER All axial surfaces of tooth included Advantages 1.Highly retentive 2.High resistance 3.Superior strength Disadvantages 1.More extensive preparation 2.Not feasible for electric vitality test 3.Esthetic .
- 7. INDICATIONS • Extensive coronal destruction • Short clinical crown • Maximum retention and resistance needed • Axial correction needed • Endodontically treated tooth
- 8. CONTRAINDICATION • If treatment objective can be met with more conservative preparation • High esthetic demand • When less than maximum retention and resistance needed
- 9. ALL CERAMIC CROWN RETAINER • Most esthetic restoration • No metal to block light transmission
- 10. INDICATIONS 1.High esthetic demand 2.Teeth with proximal /facial caries 3.Sufficient coronal structure to support 4.Favourable Occlusal load distribution 5.Centric contact :on an area where porcelain is supported by tooth structure. 6.Incisal edge reasonably intact
- 11. CONTRAINDICATION 1.High caries index 2.Conservative restoration can be used 3.Insufficient tooth structure to support 4.Thin teeth facio-lingually 5.Unfavourable occlusal load distribution 6.Bruxism 7.Edge –edge occlusal 8.Short clinical crown
- 12. ADVANTAGES 1.Improved esthetics 2.Good tissue response 3.Slightly more conservative than metal ceramic restoration DISADVANTAGES 1.Less strength of restorative material 2.More destructive preparation 3.Proper preparation is extremely critical 4.Restricted only for anterior
- 13. METAL CERAMIC CROWN RETAINER Thin ceramic layer bonded to cast metal coping Strength(metal) + esthetic (porcelain)
- 14. INDICATIONS a.High esthetic demand b.Act as retainer for FPD CONTRAINDICATIONS a.Active caries b.Periodotally untreated teeth c.Young patients d.Where conservative treatment feasible
- 15. ADVANTAGES A.Strenth +esthetics B.Excellent retentive qualities DISADVANTAGES 1. More tooth reduction 2.Perio consideration 3.Inferior esthetic-to all porcelain 4.Expensive 5.Subjectable to stress fracture
- 16. PARTIAL VENEER CROWN RETAINER • Extra coronal restoration covers only part of clinical crown • More demanding preparation • Difficult to match tooth for its texture, appearence • Gingival health
- 17. TYPES 1.Antetior three quarter crown 2.Posterior three quarter crown 3.Posterior 7/8 crown
- 18. INDICATIONS • Intact or minimal restored teeth • Intact buccal surface • No conflict between axial relationship and proposed path of withdrawal of FPD
- 19. CONTRAINDICATION • Short clinical crown • As retainer for long span FPD • Anterior endodontic treated tooth • Shape and alignment of teeth • High caries index • Thin teeth
- 20. Advantages • Conservative tooth preparation • Accessibility • Less gingival involvement • Good/complete seating of prosthesis • Feasible to electric vitality test Disadvantages • Less retentive/resistant than full crown • Limited path of withdrawal adjustment • Cannot be used on nonvital tooth
- 21. RESIN-BONDED RETAINERS To overcome the tooth reduction required for placement of retainer CLASSIFICATION 1.ROCHETTE BRIDGE 2.MARYLAND BRIDGE 3.CAST METAL FPD 4.VIRGENIA BRIDGE
- 22. Advantages • Less cost, little/less tooth preparation • No need of anaesthesia • Supragingival margins • Rebonding possible Disadvantages • Irreversible • Uncertain longetivity • No space for correction • No alignment correction • Difficult temporization
- 23. Indications • Caries free abutment • Mandibular incisor replacement • Maxillary incisor replacement • Single posterior tooth replacement Contraindication • Extensive caries • Deep vertical overbite • Nickel sensitivity
- 24. Intra-coronal retainers can either be I. Inlay II. Onlay INTRA-CORONAL RETAINER
- 25. RADICULAR RETAINERS Consists of post/core that obtains its retention and resistance to displacement from prepared root portion of an endontically treated tooth
- 26. •These are used when path of insertion of the fixed partial denture does not coincide with the long axis of the abutment tooth. • Indicated in tilted abutment. TELESCOPIC RETAINER