Dental Materials

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. Silver / Mercury phase

B. Silver / Tin phase

C. Tin / Mercury phase

D. Zinc / Mercury phase

A. Phosphoric Acid

B. Ethyl alcohol

C. Benzoic acid

D. None of the above

A. 10-12%

B. 0-6%

C. 13-30%

D. 20-30%

A. 55 – 65

B. 65 – 75

C. 75 – 85

D. 85 – 95

A. Thoroughness of condensation

B. Rapidity of firing

C. High firing temperature

D. All of the above

A. Ingestion while removing old amalgam

B. Skin contact

C. Mercury vapour

D. All of the above

A. Rate of arriving at firing temperature

B. Uniformity of particle size

C. Shape and size of particle

D. Type of investment used

A. Colour matching

B. Transparency

C. Opacity

D. None of the above

A. Zinc Phosphate cement

B. Zinc oxide equgenol cement

C. Zinc silicophosphate cement

D. Zinc polycarboxylate cement