At what angle to the external surface should proximal cavosurface walls in Class II preparation for the reception of an amalgam filling be finished: A. Acute angle B. Right angle C. Obtuse angle D. 45 angle

At what angle to the external surface should proximal cavosurface walls in Class II preparation for  the reception of an amalgam filling be finished:
A. Acute angle
B. Right angle
C. Obtuse angle
D. 45 angle
by

1 Answer

Answer :

C. Obtuse angle
by

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