The ADA specification No 1 for composition of amalgam alloy recommends______________?

Amalgams 05/04/2021

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

Related Mcqs:

    The term trituration means____________?
    A. Lysing amalgam alloy B. Mixing of amalgam alloy and mercury C. Removal of excess of mercury D. None of the above...
    The highest mercury concentration in amalgam filling is found_____________?
    A. At the margin of the restoration B. In the centre of the restoration C. In the deepest part of the restoration D. None of the above...
    The percentage of copper in high copper alloy is______________?
    A. 10-12% B. 0-6% C. 13-30% D. 20-30%...
    Which is true regarding lathe cut silver alloy_______________?
    A. Requires least amount of mercury B. Achieves lowest compressive strength at 1 hr. C. Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy D. Has low creep...
    Which is not true about high copper amalgam alloys______________?
    A. Low tensile and compressive strength B. Low Hg: Alloy ratio C. High tensile strength D. Low creep...

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