Continuous convexity incisoapically on the facial surface
Three Characteristics of all mandibular anterior teeth:
1. Indistinct cingula with smooth lingual anatomy without grooves and pits
2. Incisal edges lingual to the root axis line
3. Continuous convexity incisoapically on the facial surface
Specific information pertaining to mandibular central incisors:
They only occlude with one other tooth
Remember: the Canines (both maxillary and mandibular) are the only teeth with labial ridges