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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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