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
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 - Increase in the residual mercury in silver amalgam filling can_____________?
A. Cause fracture of the filling
B. Tarnish and corrosion
C. Increase the strength
D. Decrease condensation pressure - 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 - 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 - 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% - Pitting of direct filling old restoration usually results from_________________?
A. Using contaminated gold foil
B. Poor finished preparation
C. Improper stepping of condenser point
D. Using small condenser point - Which of the following is true about direct filling gold______________?
A. Properly condensed mat gold has no voids
B. Whatever may be the type voids are inherent
C. Voids can be avoided with manual condensation
D. None of the above - Direct filling gold formed by electrolytic precipitation is called by all the terms EXCEPT______________?
A. Crystalline
B. Granular gold
C. Mat gold
D. Sponge gold - The main advantage of composites over unfilled direct filling resin is their_____________?
A. Higher solubility in saliva
B. Lower modulus of elasticity
C. Esthetic excellence
D. Lower thermal co-efficient of expansion
