Pedia class II - SlideShare Class II cavity preparation in Primary molars • Complete class 1 using #330 bur • Extend occlusal outline to marginal ridge • Switch to #245 Bur - 3 mm length • Sweep bur buccolingually in a pendulum motion and in a gingival direction. • Break contacts and check with explorer • Axial wall should follow external contour • Width of isthmus 1/3 of occlusal table • Proximal box widest at gingival margin • Rounded axiopulpal line angle • No bevel at the gingival margins Fundamentals of cavity Preparation Pins and slots 5. Dovetail 6. Acid etching (for resin composite restorations) 45. Retention form. 1. Box form. 2. Convergence to occlusal surface (small undercut) A. B. 46. 3. Retention Form Dovetail. 47. Principles of cavity preparation 3. Retention form. Retentive groove . Pins. 48. 49. 50. Retention Slot & Pin. 51. Principles of Cavity Preparation 4. Convenience form • Convenience form : shape/ form of cavity that provide adequate observation & accessibility • ease of operation in ... Contact area carious lesion Proximal view Vertical section - Columbia CTL CLASS II CAVITY PREPARATION CHARACTERISTICS OF AN IDEAL CLASS II Contact area carious lesion Proximal view Vertical section - Buccal view Class II carious lesions are diagnosed using bitewing radiographs. In reading a bitewing radiograph, it is important to know that a proximal lesion that appears to be 2/3 or more through enamel toward the DEJ has actually penetrated the DEJ. It is also important to remember that even if caries have slightly penetrated DEJ, they can still be remineralized ... Composite preparation - SlideShare
This study evaluated the load, applied to the marginal ridge, required to produce failure in Class II posterior composite resin restorations with four different preparation designs. In group 1, the preparation had an extension through the occlusal groove. The other three groups employed a proximal box-only (slot) preparation.
Purpose: To determine if alteration of any of the following factors could reduce microleakage following placement of Class II resin-based composites (RBC) at intraoral temperature: cavity preparation (vertical wall bevels), finishing technique (delayed vs. immediate), or postoperative re-bonding (marginal sealing). DEN 7118 - Class II Amalgam and Slot Preparations ... Start studying DEN 7118 - Class II Amalgam and Slot Preparations. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Please help slot prep for composite II WREB | Student ... Contained in this are the Scoring Criteria Rating Scales for the preparations. Amalgam and composite are on pages 14 and 15. WREB allows one slot design of the two Cl II procedures. It is your choice. Do what you are familiar with doing, but follow the WREB criteria. There is no penalty for doing a traditional design for both cases. Class II Resin Restorations: Quick Tips to Help Manage the ... Another big challenge, if not one of the biggest ones, in placing and doing a great class II resin restoration, is to get ideal contours and ideal interproximal contacts. If you are like me, I learned using the good old tofflemire matrix, which had been used forever doing class II amalgams, and it worked great…..for amalgams!
Operative Dentistry: Class II Cavity Preparation... -…
Changing concepts in Class I and II cavity preparation Changing concepts in Class I and II cavity preparation. From the time G V Black, father of Operative Dentistry outlined the principles of cavity preparation, and stressed on "extension for prevention", dentistry has taken long strides. It is high time we fully realised the importance of preserving healthy tooth structure.
Roggenkamp and others9 first described the facial slot Class II cavity preparation for use with dental amalgam in 1982. This preparation, which involves accessing caries by the facial approach, followed the instrumentation sequence used for Class III preparations. When first presented, the facial slot preparation was considered ultraconservative
Changing concepts in Class I and II cavity preparation
Dental Burs | Abrasive | Chemistry
composite resin as a restorative material for facial slot prepara-tions, possibly because of isolation requirements, finishing difficulties and reduced potential for remineralization. Identification and Selection Criteria Class II lesions are candidates for facial slot preparations if they exhibit surface cavitation with some radiographic Contact area carious lesion Proximal view Vertical section ... CLASS II CAVITY PREPARATION CHARACTERISTICS OF AN IDEAL CLASS II Contact area carious lesion Proximal view Vertical section - Buccal view Class II carious lesions are diagnosed using bitewing radiographs. In reading a bitewing radiograph, it is important to know that a proximal lesion that appears to be 2/3 Operative Dentistry: Class II Cavity Preparation Introduction ... Operative Dentistry: Class II Cavity Preparation Introduction A Class II carious lesion develops apical to the contact area on the proximal surfaces of posterior teeth. The procedure for the removal of the carious lesion is the same as that of a class I. The first step is the development of the ideal cavity preparation.
Predictable Restoration of Class 2 Preparations With ... The occlusal cavosurface margins were at right angles to the cusp ridges. This right angle margin allows for a bulk of composite resin at the high-stress-bearing occlusal margin that will prevent fracture of the composite resin. Also, beveling the gingival margin of a class 2 composite resin preparation should be avoided, even if it ends on enamel.