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Dental Cements

Glass ionomer cements are composed of______________?

August 1, 2021July 23, 2019 by admin
Glass ionomer cements are composed of______________?

A. Alumino silicate powder and phosphoric acid
B. Aluminosillicate powder and polyacrylate
C. Zinc oxide powder and phosphoric acid
D. Zinc oxide powder and polyacrylate liquid

Categories Dental Cements, Dental Materials, Medical Mcqs Leave a comment

Minimum thickness for type I zinc phosphate cement should be_______________?

August 1, 2021July 23, 2019 by admin
Minimum thickness for type I zinc phosphate cement should be_______________?

A. 15 microns
B. 25 microns
C. 50 microns
D. 100 microns

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Which of the following is common to both zinc eugenol cement and polycarboxylate cement?

August 1, 2021July 23, 2019 by admin
Which of the following is common to both zinc eugenol cement and polycarboxylate cement?

A. Polyacrylic acid is liquid
B. Chemical bond to tooth structure
C. Chelation
D. Substitution o eugenol by EBA to increase strength of cement

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The addition of which of the following can accelerate the setting time of zinc oxide cement_____________?

August 1, 2021July 23, 2019 by admin
The addition of which of the following can accelerate the setting time of zinc oxide cement_____________?

A. Zinc acetate
B. Barium sulphate
C. Zinc sulphate
D. Barium chloride

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pH of fully set zinc phosphate______________?

August 1, 2021July 23, 2019 by admin
pH of fully set zinc phosphate______________?

A. 3-4
B. 4-5
C. 6-7
D. 7-8

Categories Dental Cements, Dental Materials, Medical Mcqs Leave a comment

Which of the following cements is most irritant to pulpal tissues ?

August 1, 2021July 23, 2019 by admin
Which of the following cements is most irritant to pulpal tissues ?

A. Zinc phosphate
B. Silicate
C. Glass ionomer
D. Polycarboxylate

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PH of polycarboxylate liquid is____________?

August 1, 2021July 23, 2019 by admin
PH of polycarboxylate liquid is____________?

A. 5
B. 7
C. 8
D. 1.7

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When selection the colour of cement to use for cementing a porcelain jacket crown, the powder being tested is best mixed with______________?

August 1, 2021July 23, 2019 by admin
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

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The setting of zinc phosphate may be retarded by ?

August 1, 2021July 23, 2019 by admin
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

Categories Dental Cements, Dental Materials, Medical Mcqs Leave a comment

Thickness of luting cement is_____________?

August 1, 2021July 23, 2019 by admin
Thickness of luting cement is_____________?

A. 20-40μ
B. 10-20μ
C. 60-80μ
D. 1-2μ

Categories Dental Cements, Dental Materials, Medical Mcqs Leave a comment
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