The part of the tooth covered by enamel is the:
The part of the tooth covered by cementum is the:
In older persons, the _______________ is more likely to be completely exposed.
a. Anatomic crown.
b. Clinical crown.
Enamel has a knife edge thickness at the:
a. Lamina dura.
d. Cervical line.
Dentin has _______ percent inorganic matter.