A. High strength
B. Sets quickly
C. Needs no squeezing of excess mercury
D. Greater plasticity and adapts well to cavity walls
0
Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?
0
Over-trituration of silver alloy and mercury_______________?
A. Accelerated corrosion
B. Fracture of the restoration
C. Merginal damage
D. All of the above
0
Mercury intoxication in dental office mainly results from____________?
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
0
The threshold limit value of mercury exposures is_______________?
A. Direct contact with the mercury
B. Inhalation of mercury vapours
C. Ingestion of mercury
D. None of the above
0
The tarnished layer of silver amalgam consists of________________?
A. mg / m3
B. 0.05 mg / m3
C. mg / m3
D. mg / m3
0
Which phase provides maximum strength in hardened mercury/silver alloy ?
A. Sulphides of silver
B. Oxides of tin
C. Chlorides of tin
D. All of the above
0
Copper content in low copper amalgam is________________?
A. Silver / Mercury phase
B. Silver / Tin phase
C. Tin / Mercury phase
D. Zinc / Mercury phase
0
Which of the following silver amalgam alloy have the maximum strength________________?
A. 6%
B. 12-30%
C. 29%
D. 19%
0
What is the most frequently used restorative material ?
A. Lathe cut
B. Spherical
C. Admixed
D. Single composition
Download App