Dental Materials MCQs

Page No. 8

The dental amalgam is most resistant to________________?


aCompressive stress

✓


bImpact stress

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cShear stress

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dTensile stress

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View Answer Compressive stress

Dynamic creep is the______________?


aContinuing alloying between silver-tin alloy and mercury during the life of restoration

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bDeformation of set amalgam during function

✓


cProcess whereby alloy is wetted by murcury

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dSpread of amalgam during packing

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Fluoride rich materials include ?


aSilicate cement

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bGlass ionomer cement

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cPolycarboxylate cement

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dAll of the above

✓


View Answer All of the above

Which one of the following dental cement accelerates the formation of reparative dentin ?


aEugenol

✖


bCalcium Hydroxide

✓


cZinc oxide

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dSilica

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View Answer Calcium Hydroxide

The temperature (in °F) of the mixing slab for silicate cements should be_____________?


a55-65

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b65 – 75

✓


c75-85

✖


d85-95

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View Answer 65 – 75

Increased amount of powder in zinc phosphate cement mixture will cause_______________?


aDecreased strength

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bDecreased film thickness

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cDecreased solubility

✓


dIncreased setting time

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View Answer Decreased solubility

Which of the following show chemical bond with enamel (Calcified tissues)______________?


aComposites

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bDirect filling resins

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cPolycarboxylate cements

✓


dBIS-GMA resins in pit and fissure sealants

✖



Which of the following do polycarboxylate and GIC have in common ?


aPolysiloxane

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bPhosphoric acid

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cPolyacrylic acid

✓


dIon leachable glass

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View Answer Polyacrylic acid

Which is the cement with adhesive properties ?


aSIlicate

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bZinc polycarboxylate

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cGlass ionomer

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dBoth B and C

✓


View Answer Both B and C

Eugenol may be replaced in the zinc oxide eugenol cement by______________?


aAcetic acid

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bAlginic acid

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cPhosphoric acid

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dOrtho-ethoxy acid

✓


View Answer Ortho-ethoxy acid

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