Category: Amalgams

A. Tarnish
B. Tarnish and corrosion
C. Wet corrosion
D. Dry corrosion

A. Dissolve the alloy in mercury
B. Coat the alloy particle with mercury
C. Remove excess mercury from the amalgam
D. Dissolve Hg in alloy

A. 40 Gpa and 60 – 100 Mpa
B. 21 Gpa and 27 – 55 Mpa
C. 350 Gpa and 10 – 120 Mpa
D. 360 Gpa and 125 – 130 Mpa

A. Less than 0.02%
B. Less than 0.1%
C. Less than 0.01%
D. None of the above

A. Maximum matrix and minimum alloy phase
B. Minimum matrix and maximum alloy phase
C. Maximum matrix phase
D. Minimum alloy phase

A. Lathe cut
B. Spherical
C. Admixed
D. Single composition

A. hours
B. 4 hours
C. 8 hours
D. 16 hours

A. Direct contact with the mercury
B. Inhalation of mercury vapours
C. Ingestion of mercury
D. None of the above

A. 45-55%
B. 55-65%
C. 65-85%
D. More than 85%

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