The ADA specification No 1 for composition of amalgam alloy recommends______________?
(A) 65% silver, 32% tin and 3% copper
(B) 49% silver, 32% tin and 19% cooper
(C) 65% silver, 29% tin and 5-6% copper
(D) None of the above
The ADA specification No 1 for composition of amalgam alloy recommends______________?
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