Tooth Preparation - Maryland preps
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The document provides instructions for preparing teeth LR3 and LL3 as abutments for a Maryland bridge. It describes creating chamfer finish lines, mesial and distal grooves, and multiple rest seats on each tooth to prevent displacement of the bridge. Parallel preparations are then made on LR3. Next, instructions are given for preparing teeth UL4 and UL6 as abutments for a fixed-movable Maryland bridge, including guide planes with 6 degree axial inclination, grooves, and chamfer finish lines.
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A study by Dr RV Tucker involving 1314 gold restorations over 52 years found a success rate of 94.1% over 40 years. Dr. Paul A. Tipton provides instructions for preparing teeth for various types of restorations, including reducing the occlusal surface, placing bevels and shoulders, breaking contacts, and creating supragingival margins with tapered grooves to prepare the tooth for a restoration. The document outlines the specific steps and tools to use when preparing teeth for different types of crowns and inlays.
Tooth Preparation - Anterior bonded crowns
This document describes the tooth preparation process for anterior and posterior teeth requiring crowns. It details reducing tooth structure in multiple planes, establishing margins such as shoulders and chamfers, and taking impressions. Key steps include 1-2mm of facial reduction using depth cuts and matrices, reducing occlusal surfaces 1-1.5mm, placing functional cusp bevels, and taking impressions with cord and light-body material. The goal is to adequately reduce tooth structure for crowns while maintaining biological width and producing accurate impressions.
Tooth Preparation - Zirconia crowns
The document outlines the steps for tooth preparation for a restoration, including checking the reduction with a matrix, cutting grooves 1mm deep in three planes, reducing the incisal edge by 2-3mm, cutting interproximally to produce a 1mm chamfer and prepare the axial walls at 10 degree inclination and 20 degree convergence, checking even labial reduction of 1.0-1.2mm including a labial chamfer, preparing palatally with 1mm depth grooves, placing retraction cords, taking impressions, and removing the impression.
Tooth Preparation - Aesthetic veneers
Dr. Paul A. Tipton discusses different techniques for preparing teeth for porcelain veneers. For a conventional veneer on the upper right first tooth, preparation involves 0.5mm labial reduction and removing 2mm from the incisal edge. A putty matrix is used as a guide. For a butt joint veneer on the upper right second tooth, the labial surface is reduced by 0.3-0.5mm and 1.5-2mm removed from the incisal edge, which is prepared at a 30 degree angle. Slice preparations are used to address imbrication, rotation, diastemas or missing papillae, reducing the labial surface by 0.3-0
Tooth Preparation - Porcelain Inlays & Onlays
The document provides instructions for preparing tooth LL6 for a porcelain inlay. It details creating 10-15 degree mesial and distal axial wall preparations with an overall convergence angle of 20-30 degrees. It also notes to break contact at the gingival floor, prepare 2mm off any cusps needing capping, and ensure a smooth chamfer margin around the preparation without any steps.
Tooth Preparation - All ceramic crowns
The document provides instructions for tooth preparation for a dental crown from Dr. Paul A. Tipton. It details cutting vertically through the center of the tooth, reducing the tooth by 0.5-1mm depending on the crown material, placing 0.5mm grooves in three planes, removing 2mm from the incisal edge, smoothing the incisal edge, checking the reduction with putty, reducing surfaces evenly by 0.5mm, preparing gingival margins slightly supragingival, cutting interproximally with a fine bur, producing 0.5mm chamfers mesially and distally with 20-30 degree convergence and 10-15 degree axial inclination, placing depth grooves palatally, reducing the pal
Pedia class II
The document discusses modifications that can be made to class II cavity preparations in primary molars to decrease stresses. This includes using concave pulpal floors and rounded internal line angles. It also recommends a relatively wider isthmus width that is one-third the intercuspal distance, and conservative proximal extensions that cannot pass an explorer tip. The document provides details on techniques for class II cavity preparations, such as using a #330 bur then switching to a #245 bur for extensions. Matrices, bases, condensation, and carving of amalgam restorations are also outlined.
tooth preparation-partial veneers
The document discusses different types of partial veneer crowns including three quarter crowns, seven eighth crowns, and mesial half crowns. It describes the indications, contraindications, advantages, and disadvantages of partial veneers. It also provides details on the preparation steps for partial veneer crowns, including occlusal reduction, lingual reduction, interproximal reduction, proximal groove placement, incisal offset placement, facial beveling, and finishing the preparation. Pin-modified three quarter crowns and different pin ledge preparation designs are also summarized.
The level anchorage system-Dr.Pooja Kale
The document describes the level anchorage system for orthodontic treatment. It analyzes anchorage needs based on seven variables and charts a treatment plan. An example case report is provided where the maxillary teeth were leveled, class III elastics were used, and premolars were extracted for retraction. The system aims to improve predictability, efficiency, and control of variables in orthodontic treatment.
SEMINAR -inlay cavity designs
This document provides information on inlay cavity designs, including definitions, indications, contraindications, materials used, and instrumentation. It describes the different types of bevels used for inlays and principles of cavity preparation, including maintaining a path of insertion, taper, and establishing resistance and retention forms. Factors affecting retention of cast restorations and additional retention features like grooves, boxes, and collars are also discussed.
Stainless Steel Crowns
Stainless steel crowns are widely used in Pedodontics in Dentistry.This slide is about their used ,procedure.Hope u get benifited.
Pedia stainless steel crown
The document provides steps for placing stainless steel crowns (SSCs) on primary teeth. Key points include:
1. Teeth are prepared with occlusal, proximal, and gingival reductions to allow proper adaptation of preformed SSCs.
2. SSCs are contoured and crimped as needed before cementation.
3. SSCs provide a durable restoration for restoring extensively decayed primary teeth and are easier to place than amalgam.
Class ii amalgam
This document discusses tooth preparation for class II amalgam restorations. It defines a class II restoration as being on the proximal surfaces of premolars and molars. It describes the initial tooth preparation which includes outlining the cavity form and removing undermined enamel. Secondary features are then discussed like axial walls, gingival seats, proximal boxes, and line/point angles. Modifications like reverse curves and dovetails are covered. Finally, it discusses secondary retention forms such as locks, grooves, slots, and pins to improve bonding of the amalgam restoration. Pulp protection with liners or bases is also an important part of the preparation.
Class II amalgam
This document provides instructions for preparing a class II amalgam tooth restoration. It describes initially outlining the occlusal surface and including all pits and fissures. The proximal box is then prepared by isolating the proximal enamel, creating a proximal ditch, and extending the facial and lingual walls. Retention features like locks and grooves are prepared, and the walls are finished with bevels. Final steps include cleaning, inspecting, and applying varnishes or desensitizers to the prepared cavity.
CLASS II tooth prep for SAF.ppt
1. The document describes the procedure for preparing a mandibular second premolar tooth for a class II silver amalgam restoration.
2. Key steps include outlining the tooth form, creating a dovetail retention form, cutting proximal ditches and rounding internal line angles, and finishing with 90 degree cavosurface margins.
3. Variations and modifications to the preparation are discussed for different tooth types, positions, and clinical scenarios.
tooth prep for SAF
1. The document describes the procedure for preparing a mandibular second premolar tooth for a class II silver amalgam restoration. It details the steps for preparing the tooth outline, proximal ditch cuts, finishing external walls, and variations in preparation for different tooth types.
2. Key steps include using a 245 bur held parallel to the long axis to prepare the outline to a depth of 1.5-2.0 mm, making proximal ditch cuts that are wider gingivally, and rounding line angles to increase resistance and retention.
3. Modifications for different teeth are discussed, such as preserving the oblique ridge strength in maxillary first molars and minimizing facial wall extension in maxillary first premolars.
Class i cavity prep1
This document provides guidance on various aspects of operative dentistry procedures. It discusses operator positioning, cavity preparations for single teeth and articulators, and different restorative materials. Specific details are given for Class I cavity preparations including conservative preparation techniques, sequence of use for different burs, and procedures for amalgam restoration insertion, carving, and finishing. Guidance is also provided for extensive caries cases and for occlusolingual cavity preparations and restorations.
Maxillofacial prosthesis of soft cleft palate
A soft cleft palate refers to a congenital opening or defect in the roof of the mouth (palate). A palatal obturator is a removable prosthetic device that is placed in the mouth to cover the opening. It provides an artificial plastic or acrylic palatal seal to separate the oral and nasal cavities, aiding in functions like speech, eating, and breathing. There are different types of obturators depending on factors like the location and size of the defect. Fabricating an obturator involves making impressions and models of the mouth, and adding extensions into the nasal cavity area to occlude the opening. The obturator helps reduce issues like nasal regurgitation and hypernasality caused by
Impressions1
This document describes the process for making complete dentures, including taking final impressions, border molding, and constructing the denture bases. Key steps involve:
1) Taking final impressions of the edentulous ridges using custom trays that have been border molded for an accurate fit.
2) Marking landmarks like the hamular notch on the impressions to indicate where to place the post dam.
3) Constructing denture bases by packing acrylic resin onto the master casts and curing.
4) Trimming and finishing the denture bases once set.
Partial veneer crown preparations
This document discusses various types of partial coverage crowns, including their indications and preparation techniques. It describes the key features of standard three-quarter crowns, including occlusal reduction with depth orientation grooves, axial reduction with chamfer finish lines, and proximal grooves or boxes for retention. The document also covers preparations for other partial crowns like seven-eighths crowns and pin-modified three-quarter crowns. Overall, it provides detailed information on conservative crown preparations that preserve tooth structure.
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Tooth Preparation - Maryland preps
- 1. Dr. Paul A. Tipton maryland preps “The success rates of adhesive bridgework increases with a decrease in the number of abutments.” Chang 1991 tooth preparation
- 2. Dr. Paul A. Tipton maryland preps “Proximal extensions, three quarter crowns, full grooves and labial wrap required more load for displacement.” Burgess 1989 tooth preparation
- 3. Dr. Paul A. Tipton Prepare LR3 and LL3 for Maryland bridge preparations.
- 4. Dr. Paul A. Tipton Prepare 0.3 mm lingual chamfer 0.5 – 1.0 mm supra- gingivally from mesial to distal with diamond bur.
- 5. Dr. Paul A. Tipton Supra- gingival chamfer. Prepare mesial slice preparation to eliminate convexity allow flatter surface for bonding and to create a parallel surface between both mesial surfaces of both canines
- 6. Dr. Paul A. Tipton Prepare mesial groove in enamel 0.5mm deep in the mid mesial surface and in line with the long axis of the tooth and incisal to the finish line . Use TC bur or fine diamond. Prepare mesial slice preparation to eliminate convexity and allow flatter surface for bonding. The groove is placed just lingual to the edge of the slice prep
- 7. Dr. Paul A. Tipton Mesial groove is placed in the mesial contact area Prepare distal groove above contact point with LL4 parallel to mesial groove Mesial and distal grooves prevent lingual displacement of the Maryland wing.
- 8. Dr. Paul A. Tipton Prepare lingual groove 1mm deep into dentine and above chamfer finish line and finishes 3 mm below incisal edge Lingual groove prevents rotational displacement. Prepare rest seat from apex of mesial and distal groove 1mm above chamfer finish line 0.3mm to 0.5mm in depth with diamond bur.
- 9. Dr. Paul A. Tipton Prepare this rest seat initially with diamond chamfer bur in speed increasing handpiece to “map” out or “draw” the prep and keep the bur parallet to your mesial and distal grooves , otherwise you will have an undercut Prepare rest seat from apex of mesial and distal groove 1mm above chamfer finish line 0.3mm to 0.5mm in depth with diamond bur.
- 10. Dr. Paul A. Tipton Rest seat requires further finishing with TC bur. Finish the rest seat preparation with TC bur in speed increasing handpiece 0.5mm deep.
- 11. Dr. Paul A. Tipton Rest seat completed. Prepare second rest seat in a similar way from top of each groove following curvature of the first groove Initially with diamond bur then TC bur 0.5mm deep.
- 12. Dr. Paul A. Tipton Prepare second rest seat in a similar way. Use the speed increasing handpiece.
- 13. Dr. Paul A. Tipton Prepare second rest seat in a similar way. Use the speed increasing handpiece. Prepare from top of the groove both sides.
- 14. Dr. Paul A. Tipton Second rest seat completed. Prepare a further rest seat from top of each groove, copying the incisal edge shape and finishing 1mm short of lingual edge.
- 15. Dr. Paul A. Tipton Completed preparation.
- 16. Dr. Paul A. Tipton The rest seats stop apical displacement. Prepare LR3 parallel to LL3.
- 17. Dr. Paul A. Tipton
- 18. Dr. Paul A. Tipton Prepare UL4 and UL6 for F/M Maryland bridge by preparing guide planes with a 6 degree axial inclination , grooves and chamfer finish lines .
- 19. Dr. Paul A. Tipton Mark up the contact areas on the palatal cusps with the opposing dentition with occlusal marking tape before preparing your guide planes. the guide plane should not encroach closer than 1 mm towards the contact area with the opposing tooth .
- 20. Dr. Paul A. Tipton Prepare both abutments for 0.3mm mesial, distal and palatal supra gingival chamfer and at the same time eliminate the convexity on the prepared surfaces to give a larger bonding area
- 21. Dr. Paul A. Tipton 0.3mm supra gingival chamfer Finish the chamfer at the disto-labial line angle with a 0.5mm groove
- 22. Dr. Paul A. Tipton Distal Groove
- 23. Dr. Paul A. Tipton Finish the chamfer at the mesio- labial line angle with a 0.5mm groove. Make sure this is not seen from the labial The mesial groove and finish line is not as far around as the distal . There should be an axial inclination of 6 degrees and convergence of 12 degrees
- 24. Dr. Paul A. Tipton Tipton Training Limited Prepare similar guide planes, and chamfer finish lines for the UL6 again with axial inclination of 6 degrees and convergence angle of 12 degrees Palatal finish line . The distal finish line is prepared thru the contact point and finishes on the disto-buccal surface
- 25. Dr. Paul A. Tipton Mesial finish line is a 0.5mm groove The axial gooves mesially and distally for both teeth need to have a line of draw to the palatal preparation
- 26. Dr. Paul A. Tipton Tipton Training Limited Prepare groove 0.5mm wide and 0.5.mm deep into the palatal surface and keep the incisal finish line 1 mm below the contact with the opposing tooth
- 27. Dr. Paul A. Tipton Palatal Groove Distal Groove Mesial Groove Palatal Groove
- 28. Dr. Paul A. Tipton Distal Groove Palatal Groove Mesial Groove
- 29. Dr. Paul A. Tipton Place similar groove palatally on UL6. The grooves do not to be parallel on the UL4 and UL6 as F/M bridge.
- 30. Dr. Paul A. Tipton Mesial Groove Palatal Groove Distal Groove Distal Groove
- 31. Dr. Paul A. Tipton Finished preps