The term "gingival sulcus" refers to the space between the tooth and the surrounding gum tissue. Some synonyms for this term include "periodontal pocket," "gingival crevice," "periodontal sulcus," and "dental pocket." In dental terminology, these terms are used interchangeably and refer to the same anatomical structure. The gingival sulcus plays a critical role in maintaining healthy teeth and gums, as it contains important microorganisms and immune cells that help protect against harmful bacteria. Maintaining good oral hygiene practices such as brushing, flossing, and regular dental checkups is essential to help prevent the development of gum disease and maintain a healthy gingival sulcus.