Dental Materials MCQs

Page No. 8

The dental amalgam is most resistant to________________?


aCompressive stress


bImpact stress


cShear stress


dTensile stress


View Answer Compressive stress

Dynamic creep is the______________?


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


bDeformation of set amalgam during function


cProcess whereby alloy is wetted by murcury


dSpread of amalgam during packing



Fluoride rich materials include ?


aSilicate cement


bGlass ionomer cement


cPolycarboxylate cement


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


dSilica


View Answer Calcium Hydroxide

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


a55-65


b65 – 75


c75-85


d85-95


View Answer 65 – 75

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


aDecreased strength


bDecreased film thickness


cDecreased solubility


dIncreased setting time


View Answer Decreased solubility

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


aComposites


bDirect filling resins


cPolycarboxylate cements


dBIS-GMA resins in pit and fissure sealants



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


aPolysiloxane


bPhosphoric acid


cPolyacrylic acid


dIon leachable glass


View Answer Polyacrylic acid

Which is the cement with adhesive properties ?


aSIlicate


bZinc polycarboxylate


cGlass ionomer


dBoth B and C


View Answer Both B and C

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


aAcetic acid


bAlginic acid


cPhosphoric acid


dOrtho-ethoxy acid


View Answer Ortho-ethoxy acid

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