Minimum thickness of metal coping of base metal alloy is:

 # The minimum thickness of metal coping of base metal alloy is:

A. 0.1 mm

B. 0.2 mm

C. 0.3 mm

D. 0.4 mm

The correct answer is B. 0.2 mm.

For gold alloys, the minimum thickness of coping should be: 0.3 mm

For base metal alloys, the minimum thickness of coping should be: 0.2 mm

Minimum thickness of porcelain in metal ceramic restoration should be: 0.7 mm

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