A. Marginal breakdown
B. Shrinkage
C. Delayed expansion
D. increased stresses
Moisture contamination of amalgam can lead to_____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Gamma 1
B. Gamma 2
C. Gamma 1 and 2
D. No phase is eliminated
In a high copper amalgam the phase, which is eliminated is_______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Mulling
B. Carving
C. Condensation
D. Trituration
Well premeasured capsules of amalgam can release mercury vapour during_______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Less condensing force is required
B. More condensing force is required
C. Both require same condensing force
D. Manipulation is easy
In spherical alloys as compared to lathe cut____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Ingestion while removing old amalgam
B. Skin contact
C. Mercury vapour
D. All of the above
Chronic mercury toxicity results from_____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Cause fracture of the filling
B. Tarnish and corrosion
C. Increase the strength
D. Decrease condensation pressure
Increase in the residual mercury in silver amalgam filling can_____________? Read More »
Amalgams, Dental Materials, Medical Mcqs 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
A. Require more mercury
B. Require heavy compection forces
C. Have longer setting times
D. None of the above
Compare to conventional amalgams, spherical amalgams_______________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. Gamma 1
B. Gamma 2
C. Epsilon 1
D. Gamma 3
Which of the following phases of dental amalgam has minimum strength____________? Read More »
Amalgams, Dental Materials, Medical Mcqs A. 65% silver, 32% tin and 3% copper
B. 49% silver, 32% tin and 19% cooper
C. 65% silver, 29% tin and 5-6% copper
D. None of the above
The ADA specification No 1 for composition of amalgam alloy recommends______________? Read More »
Amalgams, Dental Materials, Medical Mcqs