Category: Amalgams

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

A. Amalgam alloy
B. Trituration time
C. Speed of amalgamator
D. All of the above

A. Have less marginal breakdown
B. Are workable at lower Hg-alloy ratio
C. Have a higher ratio of tensile to compressive strength
D. Have less resistance to tarnish and corrosion

A. 9-20% copper
B. 13-20% copper
C. 9-30% copper
D. 13-30% copper

A. Continuing alloying between silver-tin alloy and mercury during the life of restoration
B. Deformation of set amalgam during function
C. Process whereby alloy is wetted by murcury
D. Spread of amalgam during packing

A. More compressive strength but less tensile strength
B. More compressive strength and tensile strength
C. Less compressive strength but more tensile strength
D. Less compressive strength and tensile strength

A. Silver
B. Tin
C. Zinc
D. Copper

A. Sulphides of silver
B. Oxides of tin
C. Chlorides of tin
D. All of the above

A. Low tensile and compressive strength
B. Low Hg: Alloy ratio
C. High tensile strength
D. Low creep

A. Electrochemical Corrosion
B. Chemical Corrosion
C. Penetrating Corrosion
D. Corrosion does not occur at all