A. Maximum matrix and minimum alloy phase
B. Minimum matrix and maximum alloy phase
C. Maximum matrix phase
D. Minimum alloy phase
Related Mcqs:
- 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 - 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 - Amalgam achieves 70% of the strength by____________?
A. hours
B. 4 hours
C. 8 hours
D. 16 hours - Amalgam achieves 70% of the strength by____________?
A. hours
B. 4 hours
C. 8 hours
D. 16 hours - 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 - Materials which has high compressive strength and low tensile strength is classified with property of________________?
A. Ductility
B. Brittleness
C. Malleability
D. Resilient - High copper amalgam can be produced_____________?
A. From smooth atomized particles
B. From irregular and spherical particles
C. From lathe cut particles
D. From traditional alloy particles - Which of the following are characteristic feature of high copper amalgam alloy ?
A. Low compressive strength
B. High marginal breakdown
C. Less marginal #
D. High creep - Which is not true about high copper amalgam alloys______________?
A. Low tensile and compressive strength
B. Low Hg: Alloy ratio
C. High tensile strength
D. Low creep
