491. Thickness of luting cement is_____________?

A. 20-40μ
B. 10-20μ
C. 60-80μ
D. 1-2μ

492. The chief advantage of zinc phosphate cement is its___________?

A. Good compressive strength
B. Film thickness
C. Lack of irritation
D. Low solubility

493. Which of the following cements is most biocompatible with pulp ?

B. Copper cement
C. Zinc phosphate cement
D. Zinc oxide eugenol cement

494. The major component of zinc phosphate cement is_____________?

A. Zinc oxide
B. Phosphoric acid
C. Zinc
D. None of the above

495. Polycarboxylate cement is used for_____________?

A. Temporary restoration
B. Leuting
C. Permanent restoration
D. Die material

496. The dual cure cements should not be used with light transmitting prostheses thicker than____________?

A. mm
B. 1.5 mm
C. mm
D. 2.5 mm

497. Which of the following is most important in strength ZOE_____________?

A. Liquid powder ratio
B. Temperature of mixing stab
C. Speed of mixing
D. Addition of few drops of water

498. The effect of zinc oxide-eugenol on the pulp ?

A. Is irritating
B. Encourages pulpal fibrosis
C. Is sedating
D. Has no effect

499. Best marginal seal is provided by____________?

A. Zinc phosphate
B. Zinc oxide eugenol
C. Gutta-percha
D. Resin

500. Secondary caries is least likely seen with_______________?

A. Silicate cement
B. Zinc phosphate
C. Polycarboxylate