MOD Gold Onlay Duggan Demo

This preparation was done as a demonstration for students in class. The tooth that was prepared was a Kilgore MOD class II preprepared tooth - with very large boxes. These teeth are MUCH softer than the Kilgore teeth made by Nissin. I was illustrating the basic principles of design for an onlay prep - but also indicated somewhat the MB extension and what would be done about that in a patient that had this MB extension.