Question 1

What is the most appropriate cavity preparation for a carious lesion on the mesial surface of tooth #8, limited to enamel?

Accepted Answer

Black’s Class III preparation is most appropriate for caries on the proximal surfaces of anterior teeth like tooth #8 (maxillary right central incisor) without incisal angle involvement.

Question 2

What modern principle guides cavity preparation for a small occlusal caries on tooth #30 with a composite restoration?

Accepted Answer

Remove only carious tissue and minimal sound enamel to preserve tooth structure, as modern composite restorations rely on adhesive bonding.

Principles of Cavity Preparation MCQs