Which of the Following Statements Is True of the Contours

Multiple Choice

Which of the following statements is true of the contours of teeth?

A) With overcontouring, the gingiva may be traumatized by food pushing against it.
B) With undercontouring, the gingiva will lack adequate stimulation and be difficult to clean.
C) The crown of the tooth narrows toward the cervical line.
D) A convex surface is curved inward.