Dental Materials

A. Equal lengths of base paste and accelerator paste are mixed together until the mix has a uniform colour

B. Increase in temperature and humidity shorten the setting time

C. The mix appear thick at the start of mixing but after 30 seconds of additional spatulation it becomes more fluid

D. Water accelerates but heat retards the setting of zinc oxide eugenol cements

A. It is pulpal irritant

B. It is highly cariogenic

C. Chemically attaches to the tooth structure

D. It produces thinnest film surface

A. 3-4

B. 4-5

C. 6-7

D. 7-8

A. The reduction in enamel solubility due to fluoride uptake by enamel

B. That beryllium flux is used in silicates

C. That silicates show very little leakage at the margins of the restoration

D. Due to the high silica content

A. Rosin

B. Zinc oxide

C. Zinc acetate

D. Oil of cloves

A. Exchange of aluminium and sodium ions

B. Exchange of aluminium and potassium ions

C. Exchange of sodium and potassium ions

D. None of the above

A. Under trituration or over trituration of amalgam

B. Decreases with condensation pressure

C. Increase with condensation pressure

D. Cannot be predictable

A. 60%

B. 70%

C. 80%

D. 90%

A. 1056

B. 1560

C. 1668

D. 1886

A. Amalgam

B. Silicate

C. Composite resin

D. Cavity varnish