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.Management Sciences
Category: Dental Cements
Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?
A. Microfilled composite resins
B. Pure gold
C. Silver amalgam
D. Type II Glass ionomer cement
Which of the following cements have anti cariogenic properly________________?
A. ZOE
B. Calcium Hydroxide
C. Zinc silicophosphate
D. Zinc phosphate
The major component of zinc phosphate cement is_____________?
A. Zinc oxide
B. Phosphoric acid
C. Zinc
D. None of the above
Which of the following cements bonds to tooth structure, which has an anticariogenic effect, has a degree of translucency and does not irritate the pulp ?
A. Polycarboxylate cement
B. Resin cement
C. Silicate cement
D. Glass ionomer cement
All of the following are true for traditional solution liner, except_________________?
A. It is not necessary in moderately deep cavities under glass ionomer restoration
B. Have Film thickness of 1 – 50 microns
C. Do not provide thermal or electric insulation
D. Protect the pulp from reaction products leaching out of restoration
The temperature (in °F) of the mixing slab for silicate cements should be_____________?
A. 55 – 65
B. 65 – 75
C. 75 – 85
D. 85 – 95
About zinc oxide eugenol all are true except_______________?
A. ZnO is converted to Zn(OH)2
B. Reaction is autocatalytic
C. Water is the byproduct of reaction
D. Dehydrated ZnO reacts with dehydrated eugenol
Which cement base has the highest modulus of elasticity ?
A. Zinc polycarboxylate
B. Polymer reinforced ZOE cement
C. Zinc phosphate
D. Glass inomer cement
When selection the colour of cement to use for cementing a porcelain jacket crown, the powder being tested is best mixed with______________?
A. Glycerin-water solution
B. Cement liquid
C. Alcohol
D. Only water
Which glass ionomer cement develops early resistance to water intake on setting ?
A. Reinforced auto care glass ionomer cement
B. Compomer
C. Resin modified glass ionomer cement
D. Ceramic reinforced glass ionomer cement
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