In amalgam alloy which acts as oxygen scavenger_____________? A. CuB. Zn C. Pd D. Ag

By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________? A. Ag B. ZnC. Cu D. Hg

Which of the following statement is true regarding lathe cut low Copper silver alloy ? A. Requires least amount of mercury B. Achieves high compressive strength at 1 hr.C. Has tensile strength both at 15 minutes and 7 days is…

Creep value of which of the following is the highest ? A. Low copper amalgam alloy B. Admix alloy C. Single composition alloys D. Creep value of all the above mentioned alloys is same

Amalgam achieves 70% of the strength by____________? A. hours B. 4 hoursC. 8 hours D. 16 hours

Mercury is toxic because it_____________? A. Complexes with hemoglobinto form methemoglobin B. Inhibits hemoglobin synthesis, producing anemia C. Inhibits anaerobic glycolysisD. Binds to sulfhydryl groups

What fraction of inhaled mercury vapors retained in the body ? A. 45-55% B. 55-65%C. 65-85% D. More than 85%

The effect of trituration on strength in an amalgam restoration depends on______________? A. Amalgam alloy B. Trituration time C. Speed of amalgamatorD. All of the above

Decrease in creep occurs in_______________? A. Under trituration or over trituration of amalgam B. Decreases with condensation pressureC. Increase with condensation pressure D. Cannot be predictable

Cavo surface angle for amalgam resoration is butt joint as____________? A. It increases compresssive and tensile strengths B. Decreased compressive, increased strength C. Decreased compressive, decrease tensile strength D. Increased compressive, increased tensile strength