Figure 4-28. Mandibular right central incisor.
c. Mesial Surface. The mesial surface is triangular in shape. It is almost flat in
its entire length. The contact area is located in the incisal third.
d. Distal Surface. The distal surface resembles the mesial surface except for
being slightly more convex.
e. Incisal Edge. The incisal edge appears slightly curved from mesial to distal.
Its thickness increases with wear.
f. Root. The root is narrow mesiodistally, but broad faciolingually. The apical
portion may have a slight distal inclination.
4-19. MANDIBULAR LATERAL INCISOR
The mandibular lateral incisor (figure 4-29) resembles the mandibular central
incisor and the maxillary lateral incisor in many respects. The mandibular lateral incisor
is slightly larger in all dimensions and is less symmetrical in outline.