Which one of the following is not an objective of trituration ?

Related Mcqs:

1. 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

2. Over-trituration of silver alloy and mercury_______________?

   A. Reduces contraction
   B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
   C. Decreases creep
   D. Gives al dull and crumbly amalgam

3. 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

4. During amalgamation, trituration is done to_____________?

   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

5. To check objective pain response, which is best used method_______________?

   A. Facial pain scale
   B. Knee jerk reflex
   C. H- Reflex
   D. R III Reflex

6. Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?

   A. It has increased tensile and compressive strength
   B. It has poor tarnish and corrosion resistance
   C. It’s edge strength is greater
   D. Mercury content in the final restoration is less

7. Which of the following silver amalgam alloy have the maximum strength________________?

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

8. Which of the following does not occur in High Copper Amalgam ?

   A. Electrochemical Corrosion
   B. Chemical Corrosion
   C. Penetrating Corrosion
   D. Corrosion does not occur at all

9. 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 comparable to high copper, unicompositional alloys
   D. Has lower cree value

10. Which of the following constituents of amalgam alloy decreases expansion____________?

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