KHN value of Amalgam is_________________?

Related Mcqs:

1. KHN of enamel is close to______________?

   A. Pure gold
   B. Amalgam
   C. Prcelain
   D. Composite

2. Increase in the residual mercury in silver amalgam filling can_____________?

   A. Cause fracture of the filling
   B. Tarnish and corrosion
   C. Increase the strength
   D. Decrease condensation pressure

3. Advantage of zinc containing amalgam is_______________?

   A. Better handling property
   B. Dimensional Stability
   C. Resistance to creep
   D. Toxicity to pulp and dentin

4. Copper content in low copper amalgam is________________?

   A. 6%
   B. 12-30%
   C. 29%
   D. 19%

5. Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?

   A. Accelerated corrosion
   B. Fracture of the restoration
   C. Merginal damage
   D. All of the above

6. Outstanding clinical performance of dental amalgam restoration is related to its____________?

   A. Compressive strength
   B. Tensile strength
   C. Corrosion
   D. Creep

7. The effect of trituration on strength in an amalgam restoration depends on______________?

   A. Amalgam alloy
   B. Trituration time
   C. Speed of amalgamator
   D. All of the above

8. By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?

   A. Ag
   B. Zn
   C. Cu
   D. Hg

9. The largest component of amalgam alloy is_____________?

   A. Silver
   B. Tin
   C. Zinc
   D. Copper

10. According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be________________?

    A. 80 Mpa
    B. 140 Mpa
    C. 260 Mpa
    D. 510 Mpa