How Many Surfaces Does a Posterior Tooth Have

Question

How many surfaces does a posterior tooth have?
A) 2
B) 3
C) 4
D) 5
E) 6

Accepted Answer

Posterior teeth have five surfaces whereas anterior teeth have four surfaces and a ridge.Posterior surfaces are mesial,distal,buccal,lingual,and occlusal.Anterior tooth surfaces are mesial,distal,facial,lingual,and a biting surface is called an incisal ridge.Experts are in disagreement as to whether the incisal ridge of anterior teeth qualifies as a fifth surface.