Dental caps
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- Dental crowns are restorations that cover and encase teeth. They are used to rebuild broken or decayed teeth, strengthen teeth, or improve cosmetic appearance. - The process of making a crown typically takes two appointments - the tooth is prepared, an impression is made, and a temporary crown is placed at the first visit. At the second visit, the permanent crown is cemented. - Studies show that crowns with shoulder finish lines have better marginal fit than those with chamfer finish lines. However, crowns with chamfer finish lines have greater fracture strength. The type of finish line used depends on the clinical situation and required strength.
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Instruments used for tooth preparation
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The document discusses principles of tooth preparation for dental restorations. It summarizes that the all-ceramic crown preparation design requires the highest percentage of tooth structure reduction at 65.26%, while ceramic veneers require the lowest at 30.28%. Proper tooth preparation aims to preserve tooth structure, provide retention and resistance, maintain structural durability and marginal integrity, and preserve the periodontium. The amount and location of tooth reduction impacts these factors.
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2) It describes various margin designs such as chamfer, shoulder, knife edge, and their advantages and disadvantages. The chamfer is preferred for metal restorations due to its distinct shape and ability to distribute stresses.
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This document discusses emergence profiles in natural tooth contours and their importance in fixed partial denture design. It provides a brief history of emergence profile terminology and concepts. Key points covered include:
- Emergence profiles are generally straight rather than convex or concave to avoid trapping plaque.
- Overcontouring crowns can cause gingival inflammation, while undercontouring does not affect healthy gingiva.
- Crowns should have emergence profiles that facilitate oral hygiene through features like open embrasures and occlusally positioned contact areas.
- Natural tooth emergence profiles were photographed and analyzed to establish anatomic norms for accurate reproduction in dental restorations.
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The document discusses the fundamentals of tooth preparation. It defines tooth preparation as the mechanical alteration of a tooth to receive a restorative material. The objectives are to remove defects, extend restorations conservatively, form preparations to resist fracture under force and allow for esthetic and functional placement of material. Key terminology includes walls, angles, and classifications of different types of restorations. The stages of initial preparation establish outline and resistance form, while final preparation focuses on secondary features, finishing, and cleaning.
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This document discusses the various instruments used for tooth preparation for dental crowns and restorations. It outlines 12 different instruments including flat end and round end tapered diamonds, torpedo diamonds and burs, short and long needle burs, small wheel diamonds, radial fissure burs, and flame diamond burs. For each instrument, it provides the specific uses in tooth preparation for different types of dental crowns like PFM, cast metal, and full porcelain crowns. The objectives are to use the correct instruments for each tooth preparation step to obtain the best results and prosthesis for the patient.
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The document discusses principles of tooth preparation for dental restorations. It covers biological considerations like preserving tooth structure, margin placement, and preventing pulp injury. Mechanical considerations include providing retention and resistance form to prevent restoration deformation or displacement. Ideal preparation taper is 2.5-6.5 degrees. Surface area and roughness increase retention while resistance depends on forces and preparation geometry. Margin types include featheredge, chamfer, bevel and shoulder. Occlusal and axial reduction are needed with functional cusp bevels. Esthetic results factor preparation for all-ceramic, metal-ceramic or partial coverage restorations.
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This document discusses interproximal enamel reduction (IPR) in orthodontics. IPR involves reducing the enamel on the proximal surfaces of teeth to gain space for correcting malocclusions. It describes the history and development of IPR techniques from using manual strips to current use of diamond discs. Guidelines recommend a maximum reduction of 0.3mm for incisors and 0.6mm for premolars/molars. IPR provides an alternative to extractions and has advantages of creating precise space while maintaining arch form. Potential disadvantages include increased caries risk and reduced interdental bone if not done properly.
Functionally Generated Pathway
1. The functionally generated pathway technique involves recording the paths of tooth movement during excursive jaw motions using wax or other materials.
2. This recording is used to develop the occlusal morphology for dental restorations like crowns, ensuring optimal occlusion during all jaw motions.
3. Studies have found that the functionally generated pathway technique results in restorations with better functional articulation compared to conventional single casting techniques, with less adjustment needed and higher patient satisfaction.
Finish lines (3) final
This document discusses different types of finish lines used in fixed prosthodontic restorations. It defines finish lines and describes their principles and configurations for both extracoronal and intracoronal restorations. For extracoronal restorations, finish line types for full veneer crowns, partial veneer crowns, and laminate veneers are explained. For intracoronal restorations, finish line designs and bevels for direct restorations using amalgam, composites, and direct gold are outlined. Guidelines for finish line placement and exposure techniques are also provided.
Biological principle of preparation ( crown )
The document discusses principles of tooth preparation for restorations. There are three main categories of principles: biological, mechanical, and esthetic. Biological principles focus on prevention of damage to adjacent teeth, soft tissues, and the pulp during preparation. They also involve conservation of tooth structure and considerations for future dental health like axial reduction, margin placement, adaptation, geometry, and occlusal factors. Margin placement should be supragingival when possible. Preparation must remove all caries while preventing trauma and using techniques to avoid temperature, chemical or bacterial damage to the pulp.
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1 7 pdf-toothpreparationforfullveneercrownssuchi-140305001933-phpapp01
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0091-9248678078
Introduction to fixed(new)
The document provides an introduction to fixed prosthodontics, which involves the permanent cementation of prostheses to replace missing teeth. It discusses the indications for and contraindications to fixed prosthodontics, as well as common types of cast restorations like inlays, onlays, crowns, bridges and veneers. The document also outlines the steps involved in crown fabrication, including tooth preparation, impressions, temporization, model casting, wax-up, investing, casting, adjustment and cementation. Tooth preparations and various build-up options are described.
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.
Post endodontic restoration/ orthodontic continuing education
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.
Finish lines/cosmetic dentistry course by Indian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Inlays and onlays / implant dentistry course/ implant dentistry course
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.
Esthetic crowns in pediatric dentistry.pptx
Esthetic crowns are used in pediatric dentistry to restore teeth damaged by decay in a way that preserves function and improves appearance. There are various types of crowns including strip crowns made of composite, pre-veneered stainless steel crowns, polycarbonate crowns, and ceramic crowns. Indications include extensive decay, fractures, discoloration or pulp therapy. Contraindications include non-restorable teeth. Placement involves tooth preparation and selection of an appropriately sized crown, which is then bonded or cemented onto the prepared tooth.
Stainless steel crown
The document discusses stainless steel crowns used for restoring primary teeth. It covers:
1) Characteristics of stainless steel crowns including their composition of chromium, nickel and iron.
2) Indications for their use such as extensive decay, pulp therapy, developmental defects, and as a preventive restoration.
3) The procedure for placing stainless steel crowns which involves tooth preparation, selection of the correct sized crown, contouring and crimping the crown, cementation and post-cementation checks.
inlays and onlays.ppt
This document provides an overview of inlays and onlays. It defines inlays as restorations that involve the occlusal surface and one or more proximal surfaces of a posterior tooth, while onlays additionally involve restoring the cusp tips. The document discusses the indications, contraindications, classifications, advantages, disadvantages, tooth preparation process, and materials used for inlays and onlays. The goal of inlay and onlay preparations is to eliminate caries while maintaining adequate tooth structure for resistance and retention forms.
posterior partial veneer crown preparation
The document discusses posterior partial veneer crown preparations. It defines partial veneer crowns as restorations that cover two or more surfaces of a tooth but not the facial surface. The document outlines the types of partial coverage crowns and describes the indications, contraindications, advantages, and disadvantages of partial veneer crowns. It discusses fundamental principles of design and the rotary instruments used for tooth preparations. Steps for preparing partial veneer crowns are provided along with details on preparing maxillary posterior three-quarter crowns.
Single Complete Denture
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.
3. TOOTH PREPRATION.ppt
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
Posterior tooth preparations/dental crown &bridge course by Indian dental aca...
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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.
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An Introduction to Fixed Prosthodontics dr. wasan.pptx
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Partial veener crowns /certified fixed orthodontic courses by Indian dental a...
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Finish lines/certified fixed orthodontic courses by Indian dental academy
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Post endodontic restoration/ orthodontic continuing education
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Dental caps
- 1. DENTAL CAPS / CROWNS & BRIDGES Dental crowns, also referred to as "dental caps" or "tooth caps," are dental restorations that cover over and encase the tooth on which they are cemented . Dentists make use of dental crowns when need to rebuild broken or decayed teeth , strengthen teeth , or improve the cosmetic appearance of a tooth , Placing a dental crown on a tooth that has had root canal treatment. Crowns can be made out of porcelain (meaning some sort of dental ceramic), metal (a gold or other metal alloy), or a combination of both. Other terms that are used to refer to dental crowns are "dental caps" and "tooth caps."
- 9. Suggested Margin Preparation Shoulder with rounded axio-cervical line angle, uniform circular ablation Chamfer preparation (with reduced mechanical support of the crown). Particularly used with reduced substructure (e.g., after repeated crowning).
- 11. Common Preparation Errors Incorrect preparation of the labial surface: Preparation in one plane; therefore insufficient reduction of substance. Fracture of the crown may result due to insufficient wall thickness of the crown. Incorrect preparation of the labial surface, risk of damage to the pulp.
- 14. ANTERIOR CROWN PREPARATION Reduce lingual surface 1.5 mm at the area of centric contact (not less than 1.0 mm) and 0.8 to 1.0 mm along the remaining lingual surface. Tooth preparation length should reflect a 1.5 to 2.0 mm occlusal (incisal) reduction. Incorporate taper of 8 to 10 degrees (never more than 12º)
- 15. STAGES OF TOOTH PREP Original position of teeth. Preferred final position of teeth. Actual preparation required to achieve preferred final position of teeth.
- 17. Use medium grit, round-ended diamond bur to remove uniform thickness of facial enamel by joining the depth-cut grooves.