A. Continuing alloying between silver-tin alloy and mercury during the life of restoration
B. Deformation of set amalgam during function
C. Process whereby alloy is wetted by murcury
D. Spread of amalgam during packing
0
The dental amalgam is most resistant to________________?
0
According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be________________?
A. Compressive stress
B. Impact stress
C. Shear stress
D. Tensile stress
0
Admixed high copper alloy powder contains_________________?
A. 80 Mpa
B. 140 Mpa
C. 260 Mpa
D. 510 Mpa
0
Finishing and polishing of Amalgam make the restoration______________?
A. 9-20% copper
B. 13-20% copper
C. 9-30% copper
D. 13-30% copper
0
Setting time of Amalgam is best controlled by _______________?
A. Increase in tarnish and corrosion resistance
B. Increase the marginal strength
C. Decrease the tarnish and corrosion resistance
D. Increased compressive strength
0
In non zinc containing dental amalgam alloy the percentage of zinc present is______________?
A. Using spherical particles
B. Lathe cut alloy
C. Altering Hg-Alloy ratio
D. Trituration time
0
High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?
A. Less than 0.02%
B. Less than 0.1%
C. Less than 0.01%
D. None of the above
0
The largest component of amalgam alloy is_____________?
A. Have less marginal breakdown
B. Are workable at lower Hg-alloy ratio
C. Have a higher ratio of tensile to compressive strength
D. Have less resistance to tarnish and corrosion
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