Complete a class 1 cavity outline. Presentation Summary : Cavity preparation is the mechanical alternation of defective, injured or diseased tooth in order to best receive a restorative material that will reestablish a. Class I, II, and VI Direct Composite Restorations. 14-3, D and E). Amalgam Cavity Preparation Class 1 - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Class 4: Proximal surfaces of anterior teeth involving incisal angle. Class 5. Academia.edu is a platform for academics to share research papers. 14-3, D and E). Class 2. CLASS I. This restoration shows an old amalgam that needs to be replaced with composite. Class II cavities are on the sides and chewing surfaces of your premolars and molars in the back of your mouth. When a Class II carious lesion exists without involvement of the occlusal, a slot cavity is prepared which is essentially the proximal portion of the Class II preparation. Black's classification system defines five classes of cavity (the sixth class was added later): Class I cavities are in the pits and fissures (cracks) in your teeth. Displaying class 1 cavity preparation for amalgam PowerPoint Presentations. Move the bur in a pendulating motion from lingual to buccal. Class 6: Cusps of posterior teeth. Class 2. The 1.5 mm pulpal depth is measured at the central fissure (Fig. Class 3. 1-7 Because of the improved physical properties of composites and bonding systems, studies typically report successful results for their use in posterior teeth. Class 4. Keep the bur parallel to the long axis of the tooth. Then place your cavity liner into the preparation before placement of a microhybrid or nanofill dental composite so you can clearly identify the composite on an X-Ray. Depending on the cuspal incline, the depth of the prepared external walls is 1.5 to 2 mm (Fig. Class 1. It is the placement of cavity margins in the positions they will occupy in the final preparation, except for finishing enamel walls and margins and preparing an initial depth of 0.2 – 0.8mm pulpally of DEJ or normal root surface position. Initial cavity preparation stage Step 1 Outline form and initial depth. Final cavity preparation stage. The depth of the preparation is modified as needed so that the pulpal wall is established 0.1-0.2 mm into dentin. www.FourthMolar.com Class II cavity preparation for amalgum restoration. Step 2 Primary resistance form. Step 3 Primary retention form. Class 6. G.V. Two outline forms can be appreciated Black proposed a classification of carious lesions. Class 1. Stages and Steps in Cavity Preparation. Posterior composite restorations were introduced in the late 1960s and early 1970s. Black’s Classification Of Cavity PPT. Extend the no.330 bur into the proximal surfaces. Use a no.330 bur to extend the occlusal outline through the marginal ridge. Class 5: Gingival third of facial or lingual surfaces of all teeth. Place bonding agent in a thin layer. Initial cavity preparation stage. G.v. After the amalgam is removed, the tooth is prepped.
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