A. Silver
B. Tin
C. Mercury
D. Zinc
Related Mcqs:
- Indium in metal alloys_______________?
A. Improve bonding
B. Harden the metal ceramic Ag-Pd alloy
C. Both A and B
D. None of the above - In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to________________?
A. Improve bonding
B. Decrease porosity
C. They react with the porcelain opaque layer, which masks the metal
D. Improves the thermal expansion between the metal and porcelain - Moisture contamination of amalgam can lead to_____________?
A. Marginal breakdown
B. Shrinkage
C. Delayed expansion
D. increased stresses - Which of the following silver amalgam alloy have the maximum strength________________?
A. Lathe cut
B. Spherical
C. Admixed
D. Single composition - 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 - For dental amalgam, the elastic modulus and tensile strength is______________?
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 - Outstanding clinical performance of dental amalgam restoration is related to its____________?
A. Compressive strength
B. Tensile strength
C. Corrosion
D. Creep - 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 - By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?
A. Ag
B. Zn
C. Cu
D. Hg - 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
