Pontics Kashish
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Pontics are the artificial teeth used to replace missing natural teeth in fixed partial dentures. They restore function and fill the space left by missing teeth. There are different types of pontics depending on whether they contact the gingival tissue and their shape. Ridge lap and ovate pontics have contact with tissue while sanitary pontics do not. Pontics are also classified by their material (metal, ceramic, or combinations) and method of fabrication, such as trupontic or interchangeable facings. The ideal pontic design depends on factors like the residual ridge shape and materials used.
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This document provides information on tooth preparation for full veneer crowns. It begins with an introduction stating that tooth preparation is an important phase that everything following, like vitality, health, esthetics, and longevity depend on. It then discusses the history of crowns dating back to 300-400 BC and developments over time. Principles of tooth preparation according to Rosenstiel and Shillingburg are outlined focusing on biologic factors, mechanical retention and resistance form, esthetics, and the periodontium. Terminologies are defined. The different crowns types - complete cast metal, anterior/posterior metal-ceramic, porcelain jacket, and all-ceramic crowns are described along with their indications, advantages, disadvantages
Pontic and pontic designs
The document discusses pontic design for fixed dental prostheses. It covers pretreatment assessment of residual ridge contours, classifications of ridge deformities, surgical modification techniques, and ideal requirements for pontics. Pontic designs are classified based on their shape and materials. Factors in pontic selection include esthetics and oral hygiene. Common designs for anterior and posterior regions are described, including sanitary, ovate, and saddle pontics. Biological considerations for pontic design involve maintaining the residual ridge, abutment teeth, and supporting tissues.
The pontics in_fixed_restorations
This document discusses pontic design for fixed dental prostheses. It defines a pontic as the artificial tooth that replaces a missing natural tooth. The document outlines the functions of a pontic including mastication, speech, and maintaining tooth relationships. It also discusses the requirements of a pontic, such as providing esthetics and comfort while restoring function. The document describes different types of pontics based on design and material, and explains factors to consider for pontic selection such as location in the mouth and priorities like esthetics versus ease of cleaning. Connectors are also discussed as the parts of a fixed dental bridge that join retainers and pontics together.
An Introduction to Fixed Prosthodontics dr. wasan.pptx
This document discusses crowns and bridges in dentistry. It defines crowns as fixed restorations that cover the coronal portion of teeth to restore morphology, contour, and function. Bridges are fixed prostheses that replace one or more missing teeth by connecting to adjacent natural teeth or roots. The document outlines different types of crowns and components of bridges, as well as the purposes, materials, and steps for constructing crowns and bridges.
5-PONTICS.pptx
The document discusses pontic design for fixed partial dentures. It defines a pontic as the replacement for a missing tooth that restores function, aesthetics, and oral health. There are different types of pontic designs that either contact the oral mucosa or do not. Mucosal contact designs include ridge lap, modified ridge lap, ovate, and conical pontics. Non-mucosal contact designs are sanitary and modified sanitary pontics. Proper pontic design considers dimensions of the edentulous area and residual ridge shape to prevent irritation and allow for hygiene. Material choice and occlusal forces also impact the mechanical design of the pontic.
Pontics in Fixed Partial Dentures
This document discusses pontic design in fixed partial dentures. It begins with definitions of a pontic and outlines key considerations for pontic design including pretreatment assessment of the pontic space and residual ridge contour, classification of pontics, and biologic, mechanical and esthetic factors. Optimal pontic design aims to provide an esthetic appearance while enabling adequate oral hygiene and preventing tissue irritation. Pontic selection depends on factors like location and materials used. The document discusses various pontic designs like sanitary, modified sanitary, saddle/ridge lap and ovate pontics and their appropriate uses. Biologic considerations for pontic design include maintaining pressure-free contact to prevent inflammation.
Restoration of endodontically treated teeth.
provides an overview of restoring endodontically treated teeth using posts and cores. It discusses the historical background of posts and describes characteristics of teeth that have undergone endodontic treatment. Key points include that these teeth often have reduced strength and require special considerations for retention and resistance. The document outlines indications for posts and cores, principles of preservation of tooth structure and providing retention and resistance. It also describes methodologies for various steps of the post and core procedure.
Restoration of endodontically treated teeth
Restoration of endodontically treated teeth often requires posts and cores to provide adequate retention and resistance for weakened teeth. Key principles for posts and cores include preserving tooth structure, maximizing retention through post length and design, and providing resistance through features like ferrules. Posts and cores are indicated when there is significant loss of coronal tooth structure and the risk of fracture is high. The amount of remaining tooth structure, presence of a ferrule, and post length and design all influence the success of a post and core restoration.
complex restorations
The document discusses various types of complex dental restorations including cast metal restorations, tooth-colored restorations, and CAD-CAM based restorations. It provides details on materials, indications, contraindications, advantages and disadvantages, and fabrication procedures for cast metal inlays, onlays, partial veneer crowns, full veneer crowns, indirect composite inlays/onlays, ceramic inlays/onlays, and CAD-CAM based restorations. It also covers pin-retained restorations and inlay-retained bridges.
The pontics in_fixed_restorations
A fixed dental bridge (pontic bridge) replaces one or more missing teeth by attaching artificial teeth (pontics) to crowns placed over adjacent natural teeth (abutments). The pontics are suspended between the abutment crowns and attached through rigid connectors. The pontic restores function by allowing chewing, speech, and preventing other teeth from shifting. It also improves esthetics by filling in empty spaces when talking or smiling. The type of pontic used depends on factors like location in the mouth, esthetics requirements, and ensuring adequate oral hygiene.
bridge and pontic design lecture
in this lecture we will discuss everything about fixed partial denture types, components, designs, parts, materials and classifications.
hope you enjoy it .
Inlays & onlays (crown and bridge )
This document provides information about crown and bridge restorations. It discusses indirect restorations like inlays and onlays, which are fabricated outside of the mouth and then cemented into the tooth. The document covers the types of indirect restorations, materials used, procedures, advantages and disadvantages. It also discusses tooth preparation requirements and provides references used.
Reconstruction of endo tt teeth
Endodontic treatment is largely performed on teeth significantly affected by caries, multiple repeat restorations and/or fracture. Already structurally weakened, such teeth are often further weakened by the endodontic procedures designed to provide optimal access and by the restorative procedures necessary to rebuild the tooth.
It is therefore accepted that endodontically treated teeth are weaker and tend to have a lower lifetime prognosis. They require special considerations for the final restoration which involve ensuring both adequate retention for the final restoration and maximum resistance to tooth fracture.
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Pontics Kashish
- 2. DEFINITION The Glossary of prosthodontic terms Pontics- An artificial teeth on a fixed partial denture that replaces missing natural teeth, restores it’s function and usually fills the space previously filled by the natural crown. Tylman defines Pontics as the suspended member of a fixed partial denture which replaces the lost natural tooth, restores function and occupies the space of the missing tooth.
- 5. 1. Depending on the Mucosal contact 2. Depending on the materials. 3. Depending upon the Method of fabrication CLASSIFICATION
- 6. With mucosal contact Ridge Lap Pontic Modified ridge Lap Ovate Pontic Conical Pontic MUCOSAL CONTACT Without mucosal contact Sanitary pontic Modified sanitary Pontic
- 7. concave fitting surface overlaps the residual ridge buccolingually, simulating the contours and emergence profile of the missing tooth on both sides of the residual ridge. Disadvantage - plaque accumulation and tissue inflammation SADDLE OR RIDGE LAP PONTIC
- 8. MODIFIED RIDGE LAP PONTIC The modified ridge lap design overlaps the residual ridge on the facial (to achieve the appearance of a tooth emerging from the gingiva) but remain clear of the ridge on the lingual. Mesiodistal surface is made convex to avoid food entrapment. Tissue surface - T-Shaped
- 9. Also called bullet-shaped Easy cleansibility made as convex as possible, only one point of contact at the center of the residual ridge. recommended for mandibular posterior teeth where esthetics is a lesser concern and where ridge is knife-edged CONICAL PONTIC
- 10. most esthetically appealing Its convex tissue surface resides in a soft tissue depression in the residual ridge, which makes it appear that a tooth is literally emerging from the gingiva. OVATE PONTIC
- 11. allows easy cleaning permits easier plaque control by allowing gauze strips and other cleaning devices to be passed under the pontic Occlusogingival height should be 3mm. Disadvantage- entrapment of food particles , unesthetic SANITARY OR HYGIENIC PONTIC
- 12. Types of sanitary pontics Bar Sanitary pontic Conventional or fish belly pontic Modified sanitary / Perel pontic or Arc-fixed pontic
- 13. 2. Materials All metal- Gold, cobalt-chromium, nickel- chromium etc. Non metallic – Porcelain Combination – 1. Metal and ceramic 2.metal and resin Good strength ,Single step procedure Poor aesthetics Indications- Mandibular molars , Bruxism Aesthetic , Biocompatible Difficult to fabricate Most commonly indicated Contraindication – Long span bridges Conventional gold alloy substructure Less strength & abrasion resistance , Staining Indication – Long-term provisional restoration
- 14. 3. Method of fabrication a. Trupontic – Large bulk of gingival porcelain adapted to the ridge. A horizontal tubular slot in the facing Retention – Tubular slot and proximal bevels b. Interchangeable facings – vertical slot in flat lingual surface, which is retained with a lug that engages the retention slot. Tissue contact towards the backing.
- 15. c. Sanitary pontic –There is a flat surface towards the occlusal with a proximal slot d. Pin facing – A flat back facing with two horizontal pins for retention.
- 16. e. Reverse pin facing – Porcelain denture teeth can be modified to be used as the bridge facing. Porcelain is added to the gingival end of the facing. It is adapted to the ridge and multiple precision pin holes are drilled into the lingual surface with a tungsten carbide drill. Nylon bristles are placed in the holes and incorporated into the backing wax pattern. This facing affords a good retention when a deep overbite would force the use of very short pins in a conventional facing.
- 17. f. Porcelain fused to metal facing – When maximum aesthetics is required particularly for an anterior tooth, this pontic is indicated. g. Harmony facing – This facing is supplied with an uncontoured porcelain gingival surface and usually two retentive pins on the lingual side. The gingival area is adapted to the ridge and then reglazed.