- The central fossa is an important anatomical feature primarily found on the occlusal surfaces of posterior teeth, which include both premolars and molars.
- This depression serves as a convergence point for the grooves and ridges on these teeth, playing a critical role in the efficient grinding and chewing of food.

- Unlike anterior teeth, which are characterized mainly by a single cusp and sharp edges designed for cutting and tearing, posterior teeth have multiple cusps and complex occlusal surfaces, including the central fossa.
- This adaptation enhances their function in mastication. Primary teeth and mixed dentition may also have central fossae on their posterior teeth but the term generally refers to the feature found on permanent posterior teeth.

- Thus, the key point is that the central fossa is specifically associated with the functional anatomy of posterior teeth, aiding in their role in grinding, which distinguishes them from anterior teeth.

Reference: Wheeler’s Dental Anatomy, Physiology and Occlusion, 10th Edition, Chapter 6, Page 142