The maxillary molar mesial sub-occlusal enamel web: identification of a previously unreported tooth structure: the maxillary Rainey web.

This article describes the anatomical structures of the suspensory web of enamel in the area formerly known as the mesial "fossae," which has been assumed to be a single "pit" and the area immediately adjacent mesially, formerly known as the mesial marginal ridge "fossae." This structure lies anterior to the predominant feature of the occlusal table of the maxillary first molars, the oblique or transverse ridge, and distal to the mesial marginal ridge.