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Metal margin is preferred over ceramic margin in metal ceramic restoration:

 # Metal margin is preferred over ceramic margin in metal ceramic restoration:
A. Margins are easy to prepare for metal during tooth preparation
B. Tooth preparation is going to be more conservative
C. Only when margin is subgingival
D. Marginal adaptation is better in metal margin rather than ceramic margin


The correct answer is C. Only when margin is subgingival.

Metal ceramics: These materials require extensive tooth reduction. The junction between the metal
and the ceramic is very unaesthetic. For aesthetic reasons the margins of the restoration is placed
subgingivally which frequently leads to periodontal problems. 
Reference: Nallaswamy, 2nd Edition, Page 495


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