1. An angle greater than 90° one surface makes when meeting another as a part of a cavity preparation.
2. A surface having a sloping or slanting edge.
3. v. To create a slanting edge or surface on a structure. An external bevel describes the blade placement angled towards the base of a periodontal pocket where the tip of the knife is apical to the neck of the blade when undertaking a gingivectomy. An internal bevel incision is used in flap surgery and the tip of the scalpel is directed from the gingival margin towards the base of the periodontal pocket.
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