The maxillary central incisor is the widest tooth mesiodistally in each maxillary quadrant. It has a slightly straight incisal edge and a rectangular appearance due to its less convex labial surface compared to the lateral incisor and canine. The maxillary central incisor typically has one tapering root that is triangular in cross-section with one root canal and two pulp horns. There can be variations in root length, crown contours, and the depth of the lingual fossa. Rare anomalies include Hutchinson's incisors with a screwdriver-shaped crown from congenital syphilis and a talon cusp with a large accessory cusp on the lingual surface.