Dental Materials MCQs

Page No. 14

Polycarboxylate cement is used for_____________?


aTemporary restoration

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bLeuting

✓


cPermanent restoration

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dDie material

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View Answer Leuting

The major component of zinc phosphate cement is_____________?


aZinc oxide

✓


bPhosphoric acid

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cZinc

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dNone of the above

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View Answer Zinc oxide

Which of the following cements is most biocompatible with pulp ?


aGIC

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bCopper cement

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cZinc phosphate cement

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dZinc oxide eugenol cement

✓



The chief advantage of zinc phosphate cement is its___________?


aGood compressive strength

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bFilm thickness

✓


cLack of irritation

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dLow solubility

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View Answer Film thickness

Thickness of luting cement is_____________?


a20-40μ

✓


b10-20μ

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c60-80μ

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d1-2μ

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View Answer 20-40μ

The setting of zinc phosphate may be retarded by ?


aIncreased in the ratio of powder to liquid

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bDiluting the liquid with water

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cIncrease the addition of powder to liquid

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dDecrease the addition of powder to liquid

✓



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


aGlycerin-water solution

✓


bCement liquid

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cAlcohol

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dOnly water

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PH of polycarboxylate liquid is____________?


a5

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b7

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c8

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d1.7

✓


View Answer 1.7

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


aZinc phosphate

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bSilicate

✓


cGlass ionomer

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dPolycarboxylate

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View Answer Silicate

pH of fully set zinc phosphate______________?


a3-4

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b4-5

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c6-7

✓


d7-8

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View Answer 6-7

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