Journal of Conservative Dentistry
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Year : 2012  |  Volume : 15  |  Issue : 3  |  Page : 253-256

A self-designed instrument to evaluate cavosurface angle for class I amalgam cavity preparation: A learning aid

1 Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal University, Karnataka, India
2 Department of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences, Manipal University, Karnataka, India

Correspondence Address:
Ankit Arora
Department of Conservative Dentistry and Endodontics, Manipal College Of Dental Sciences, Manipal University, Karnataka - 576 104
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.97951

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Fighting the controversies, amalgam, as a posterior restorative material has survived till date. The fate of amalgam restoration is determined by geometry of the cavity preparation and cavosurface angle is one integral part of the cavity, which decides the marginal characteristics of the restoration and health of the tooth. Low edge strength of amalgam highlights the importance of cavosurface angle. However, at the same time conservation of the tooth also should be considered. This article presents a self-designed instrument to evaluate and obtain a cavosurface angle close to 110°. The design of the instrument also helps in evaluating parameters, such as depth of the cavity, undercut angle, and allows finishing of the buccal or lingual walls.

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