A. Low compressive strength
B. High marginal breakdown
C. Less marginal #
D. High creep
Which of the following are characteristic feature of high copper amalgam alloy ? Read More »
Amalgams, Dental Materials, Medical Mcqs A. 6.6 a (ppm k-1)
B. 11.4 a (ppm k-1)
C. 14.0 a (ppm k-1)
D. 25.0 a (ppm k-1)
Co-efficient of Thermal exansion of amalgam is______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Improper amalgam filling
B. Pulp exposure
C. Galvanism
D. None of the above
A. Compressive strength
B. Tensile strength
C. Corrosion
D. Creep
A. Lungs
B. Gastro-intestinal Track
C. Skin
D. Kidneys
Absorption of mercury in the human body occurs least from_____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. From smooth atomized particles
B. From irregular and spherical particles
C. From lathe cut particles
D. From traditional alloy particles
High copper amalgam can be produced_____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Remove oxides from powder particle surface
B. Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum
C. Pulverize pelletes into particles to aid in attack by mercury
D. Achieve a workable mass of amalgam in minimum time
Which one of the following is not an objective of trituration ? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Silver
B. Tin
C. Mercury
D. Zinc
Gallium and indium added to Amalgam replace______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Requires least amount of mercury
B. Achieves lowest compressive strength at 1 hr.
C. Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy
D. Has low creep
Which is true regarding lathe cut silver alloy_______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Dry Mix
B. Shiny Mix
C. Short Mixing Time
D. None of the above
Adequate mixing of mercury is indicated by_______________? Read More »
Amalgams, Dental Materials, Medical Mcqs