**Question:** The main drawback of a saddle pontic is:

A. Poor retention
B. Inadequate retention
C. Loss of alveolar bone support
D. Inadequate support for the adjacent teeth

**Core Concept:** A saddle pontic is a dental restoration that is used to replace one or more missing teeth. It is a type of fixed partial denture, which is a dental prosthesis that replaces one or more missing teeth and is cemented onto remaining teeth. A saddle pontic has a V-shaped or saddle-shaped retention area, which provides better retention compared to a conventional pontic.

**Why the Correct Answer is Right:** The correct answer is D. Inadequate support for the adjacent teeth. A saddle pontic aims to improve retention compared to a conventional pontic, but it does not provide sufficient support for the adjacent teeth. This can lead to additional stress on these teeth, potentially causing them to weaken and fracture over time.

**Why Each Wrong Option is Incorrect:**

A. Poor retention (Option A): While a saddle pontic improves retention compared to a conventional pontic, it does not provide optimal retention, making it a less reliable restoration option.

B. Inadequate retention (Option B): This answer is similar to the correct answer D, but with a different focus on the lack of retention compared to a conventional pontic.

C. Loss of alveolar bone support (Options C and D): This option addresses the consequence rather than the main drawback of the saddle pontic. The primary drawback is inadequate support for adjacent teeth, not the loss of alveolar bone support.

**Clinical Pearl:** When considering a saddle pontic as a treatment option for missing teeth, clinicians should be aware of the potential drawback of inadequate support for adjacent teeth. This could lead to increased stress on these teeth and may compromise their long-term prognosis. Optimal support for adjacent teeth should be considered in treatment planning to minimize the risk of complications.