Which term describes the small triangular area of tissue between adjacent teeth?

The term that describes the small triangular area of tissue between adjacent teeth is known as the interdental papilla. This structure is an essential part of periodontal health, as it helps to fill the space between teeth and supports the overall architecture of the gingiva. The interdental papilla is made up of soft tissue and is important for maintaining the aesthetics of the gingival contour as well as providing a barrier against food particles and bacterial accumulation, which can contribute to periodontal disease.

In contrast, the gingival margin refers to the edge of the gum tissue surrounding the teeth and plays a role in outlining the health of the gums, but it does not specifically refer to the space between the teeth. A periodontal pocket is a pathological condition that occurs when the supporting structures of the teeth become compromised, leading to deeper spaces that are resulting from periodontal disease. Meanwhile, the marginal ridge refers to the elevated borders of the occlusal surfaces of the posterior teeth and is not related to the area between teeth. Understanding the role of the interdental papilla is crucial in the practice of dental hygiene and the maintenance of periodontal health.