Hygiene Atlas

Atlas · Plate II · Dental Anatomy and Tooth Morphology · 04

Incisors

Incisors are the front cutting teeth. The maxillary central has the widest crown of any anterior tooth, the maxillary lateral is the most variable and may be peg-shaped or missing, and the mandibular central is the smallest permanent tooth. Mandibular incisor roots are flattened side to side with proximal concavities, and newly erupted incisors show three mamelons.

High-yield facts · 6

  1. Maxillary central incisor: widest crown mesiodistally of any anterior tooth; mesial incisal angle is sharp, distal is rounded.T6
  2. Mamelons (3) appear on newly erupted incisors and wear away with function.T6
  3. Maxillary lateral incisor: most variable anterior tooth; may be peg-shaped or congenitally missing; often has a lingual pit.T6
  4. Mandibular central incisor: smallest permanent tooth and the most bilaterally symmetrical.T6
  5. Mandibular incisor roots are flattened mesiodistally with proximal concavities and may have two canals (labial and lingual).T6
  6. The cingulum is the lingual bulge of the cervical third on anterior teeth.T6

Facts are written in our own words; each tag links to its source. Values marked "sources vary" differ between references, so check the one your program uses.