Dental Materials MCQs

Page No. 11

Which cement base has the highest modulus of elasticity ?


aPolymer reinforced ZOE cement


bZinc phosphate


cZinc polycarboxylate


dGlass inomer cement


View Answer Zinc phosphate

Ethoxy benzoic acid increases the strength and solubility of the cement______________?


aZinc oxide eugenol


bZinc Phosphate cement


cPolycarboxylate cement


dSilicate cement


View Answer Zinc oxide eugenol

In non-eugenol pastes the constituents are mixed in______________?


aPhosphoric acid


bEthyl alcohol


cBenzoic acid


dNone of the above


View Answer Benzoic acid

MEchanism of adhesion of GIC restoration with tooth surface is by mean of ______________?


aCarboxyl group


bChelates with Metal Ions


cC=C double bond


dPolymer chains


View Answer Carboxyl group

The setting time of ZnPO4 cement can be retarded by_____________?


amixing more powder to the liquid


bmixing powder to liquid, checked by water


cslower addition of powder to liquid


dfaster addition of powder to liquid



Mode of failure during dislodgement of prosthesis cemented with zinc poly carboxylate cement is usually seen at the_____________?


aCement tooth interface


bCement prosthesis interface


cCleavage through the cement layer


dFracture of tooth or prosthesis



Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?


aMicrofilled composite resins


bSilver amalgam


cPure gold


dType II Glass ionomer cement



Which one of the following dental cements does not contain water as part of the composition of the liquid component ?


aZinc phosphate cement


bZinc oxide equgenol cement


cZinc silicophosphate cement


dZinc polycarboxylate cement



Cavity varnishes have_____________?


aAverage bonding to tooth


bLow bonding to tooth


cExcellent bonding to tooth


dNo bonding to tooth


View Answer No bonding to tooth

Advantage of zinc phosphate over GIC is______________?


aHigh compressive strength


bTensile strength


cHigh modulus of elasticity


dDiametral strength



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