Which of the following cements is most irritant to pulpal tissues ?
A. Zinc phosphate
B. Silicate
C. Glass ionomer
D. Polycarboxylate
Dental Materials
PH of polycarboxylate liquid is____________?
PH of polycarboxylate liquid is____________?
A. 5
B. 7
C. 8
D. 1.7
When selection the colour of cement to use for cementing a porcelain jacket crown, the powder being tested is best mixed with______________?
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
The setting of zinc phosphate may be retarded by ?
The setting of zinc phosphate may be retarded by ?
A. Increased in the ratio of powder to liquid
B. Diluting the liquid with water
C. Increase the addition of powder to liquid
D. Decrease the addition of powder to liquid
Thickness of luting cement is_____________?
Thickness of luting cement is_____________?
A. 20-40μ
B. 10-20μ
C. 60-80μ
D. 1-2μ
The chief advantage of zinc phosphate cement is its___________?
The chief advantage of zinc phosphate cement is its___________?
A. Good compressive strength
B. Film thickness
C. Lack of irritation
D. Low solubility
Which of the following cements is most biocompatible with pulp ?
Which of the following cements is most biocompatible with pulp ?
A. GIC
B. Copper cement
C. Zinc phosphate cement
D. Zinc oxide eugenol cement
The major component of zinc phosphate cement is_____________?
The major component of zinc phosphate cement is_____________?
A. Zinc oxide
B. Phosphoric acid
C. Zinc
D. None of the above
Polycarboxylate cement is used for_____________?
Polycarboxylate cement is used for_____________?
A. Temporary restoration
B. Leuting
C. Permanent restoration
D. Die material
The dual cure cements should not be used with light transmitting prostheses thicker than____________?
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