Dental Materials MCQs

Page No. 59

One bottle system of adhesive resins_____________?


a4th generation bonding agents


bSeparate etching step is not required


cSeparate etching step is still required


dContains only primer



The most common coupling agents are organic silicon compound called_______________?


aParabane


bLigane


cSilane


dChelane


View Answer Silane

Along with polymerisation shrinkage, one of the major disadvantages of polymethyl methacrylate as denture base resin are its poor_____________?


aBiological properties


bThermal properties


cMechanical properties


dEsthetic properties


View Answer Thermal properties

Macromolecules in Dental Resin is attached by______________?


aCovalent bonds


bIonic bonds


cHydrogen bonds


dVander waal forces


View Answer Covalent bonds

What is the polymerization shrinkage if 3:1 powder: liquid ratio is used____________?


a6%


b8%


c10%


d21%


View Answer 6%

The commonly used laser for curing composite resin is______________?


aNd:YAG


bCO2


cER:YAG


dArgon


View Answer Argon

The restoration which shows percolation and shrinkage along the margins is_____________?


aComposites


bUnfilled resins


cAmalgam


dPolycarboxylate


View Answer Unfilled resins

Which of the following absorbs maximum amount of water ?


aMicrofilled resin


bMacrofilled resin


cHybrid


dLight cure activated


View Answer Microfilled resin

For esthetic areas where high luster is required the restoration used usually______________?


aGlass ionomer restoratives


bHybrid resin composites


cMicrofilled resin composites


dMacrofilled resin composites



When restoring a tooth with resin material, acid etching can do all of the following except______________?


aIncrease the surface area


bPermit chemical bonding between resin and enamel


cCreate surface irregularities in enamel for better mechanical retention of resin


dCondition the tooth surface for better wetting



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