Lecture - 09/05 - Anterior Mental-Ceramic Crown Preparation

Question 1

What are the consequences of under preparation of an MCC prep? Of over preparation?

Answer 1

• under preparation: opaque-looking crown; over-contoured gingival margin
• over preparation: irreversible pulpitis; exposure

Question 2

Clinically, where is the gingival margin of an MCC prep placed?

Answer 2

normally 1.0 mm subgingival

Question 3

What is the difference in shape of the lingual reduction for an MCC prep of an incisor and canine?

Answer 3

• incisor: uniform slight concave

- canine: biconcave