Question

A patient requires a restoration on tooth #7 (maxillary right lateral incisor) that includes the mesial surface and undermines the incisal corner. Which of the following Black's classifications is this cavity?

a) Class I
b) Class II
c) Class III
d) Class IV

Answer 1

The restoration on tooth #7 is classified as Class III according to Black's classification system.

Step-by-step explanation:

The restoration that includes the mesial surface and undermines the incisal corner of tooth #7 (maxillary right lateral incisor) is classified as Class III according to Black's classification system. Class III cavities involve the proximal surfaces of anterior teeth, such as incisors and canines. In this case, the mesial surface of the lateral incisor is affected.