**Question:** In a class II mesio occlusal inlay gingival bevel is at

A. Mesial
B. Distal
C. Incisal
D. None

**Core Concept:**

A class II mesio occlusal inlay is a dental restoration that covers the occlusal surface of a tooth, involving both the mesial and distal surfaces, and extends lingual or buccal to include part of the facial aspect of the cusps. A gingival bevel is a technique used to reduce the bulk of the restoration and improve its fit by cutting away a small portion of the gingival margin. In the context of a class II mesio occlusal inlay, the gingival bevel is typically placed at the mesial aspect, as it ensures proper adaptation and prevents accumulation of plaque and calculus.

**Why the Correct Answer is Right:**

A gingival bevel is performed to improve the fit of a class II mesio occlusal inlay and reduce its bulk, which may affect plaque accumulation and gingival health. In this case, option A, "Mesial," is the correct answer since it is the location where the gingival bevel is applied to achieve these benefits.

**Why Each Wrong Option is Incorrect:**

Option B, "Distal," is incorrect because a gingival bevel should be placed mesially, not distally. Option C, "Incisal," is irrelevant to the question as it refers to the cutting of the incisal edge, which is not related to the gingival bevel in this context. Option D, "None," is incorrect because a gingival bevel is necessary to improve the fit and prevent plaque accumulation.

**Clinical Pearl:**

A well-placed gingival bevel in a class II mesio occlusal inlay ensures better adaptation of the restoration to the tooth and reduces the risk of plaque and calculus accumulation, ultimately enhancing the oral health of the patient. It is crucial for dental practitioners to understand the correct location of the gingival bevel in relation to the tooth anatomy to provide optimal dental care.