Editing Gums (section)

===Interdental gum ===
The interdental gum lies between the teeth. They occupy the gingival [[embrasure (dental)|embrasure]], which is the interproximal space beneath the area of tooth contact. The [[interdental papilla]] can be pyramidal or have a "[[col]]" shape. Attached gums are resistant to the forces of [[chewing]] and covered in [[keratin]].

The col varies in depth and width, depending on the expanse of the contacting tooth surfaces. The [[epithelium]] covering the col consists of the marginal gum of the adjacent teeth, except that it is nonkeratinized. It is mainly present in the broad interdental gingiva of the posterior teeth, and generally is not present with those interproximal tissue associated with anterior teeth because the latter tissue is narrower. In the absence of contact between adjacent teeth, the attached gum extends uninterrupted from the facial to the lingual aspect. The col may be important in the formation of periodontal disease but is visible clinically only when teeth are extracted.<ref name=":0">Fehrenbach, MJ and Popowics, T. (2026).''Illustrated Dental Embryology, Histology, and Anatomy'', Elsevier, pages 138-39.</ref>