**Question:** Common design which can be employed while fabricating a sanitary pontic

**Core Concept:** A sanitary pontic is a dental prosthetic used in fixed partial dentures (FPDs) to bridge the gap between two teeth. It is designed to be compatible with the adjacent teeth and gingiva, ensuring esthetics and stability.

**Why the Correct Answer is Right:**

Correct Answer: **D. Occlusally Convex Design**

The correct design for a sanitary pontic is occlusally convex because it provides better adaptability to the adjacent teeth and gingiva, resulting in better retention, stability, and esthetics. An occlusally convex design allows for the pontic to conform to the contours of the tooth and gingiva, ensuring a secure fit. This design helps to distribute the occlusal forces evenly, reducing the risk of premature contacts and potential damage to the abutment teeth.

**Why Each Wrong Option is Incorrect:**

A. **Flat Design (A):** A flat pontic design does not provide the necessary adaptability to the adjacent teeth and gingiva, leading to inadequate retention, stability, and esthetics.

B. **Convex Design (B):** A convex design, when positioned lingual or facial to the abutment teeth, can cause interference with the opposing teeth during function, leading to potential damage and discomfort for the patient.

C. **Occlusally Convex Design (C):** Although not wrong, the occlusally convex design (option D) is the best choice among the given options due to the reasons explained above.

**Clinical Pearl:**

When fabricating a sanitary pontic in a fixed partial denture, the occlusally convex design ensures optimal esthetics, retention, and stability, reducing the risk of complications and patient discomfort. Choose the design that best adapts to the contours of the adjacent teeth and gingiva.

**Correct Answer:** D. Occlusally Convex Design