A. Cause fracture of the filling
B. Tarnish and corrosion
C. Increase the strength
D. Decrease condensation pressure
Related Mcqs:
- A patient who has had a recent amalgam filling in the upper teeth has a gold filling in the lower teeth, the patient complains of pain. The reason for this can be mainly_____________?
A. Improper amalgam filling
B. Pulp exposure
C. Galvanism
D. None of the above - 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 - The highest mercury concentration in amalgam filling is found_____________?
A. At the margin of the restoration
B. In the centre of the restoration
C. In the deepest part of the restoration
D. None of the above - Amalgam restorations give the best clinical service when the residual mercury content is_______________?
A. 38-42%
B. 48-52%
C. 58-62%
D. 68-72% - Which of the following silver amalgam alloy have the maximum strength________________?
A. Lathe cut
B. Spherical
C. Admixed
D. Single composition - The tarnished layer of silver amalgam consists of________________?
A. Sulphides of silver
B. Oxides of tin
C. Chlorides of tin
D. All of the above - Well premeasured capsules of amalgam can release mercury vapour during_______________?
A. Mulling
B. Carving
C. Condensation
D. Trituration - Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?
A. Accelerated corrosion
B. Fracture of the restoration
C. Merginal damage
D. All of the above - Which phase provides maximum strength in hardened mercury/silver alloy ?
A. Silver / Mercury phase
B. Silver / Tin phase
C. Tin / Mercury phase
D. Zinc / Mercury phase - The solid solution of silver and mercury is called_______________?
A. y1
B. y2
C. B1
D. y
