Dental Materials MCQs

Page No. 59

One bottle system of adhesive resins_____________?


a4th generation bonding agents

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bSeparate etching step is not required

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cSeparate etching step is still required

✓


dContains only primer

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The most common coupling agents are organic silicon compound called_______________?


aParabane

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bLigane

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cSilane

✓


dChelane

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View Answer Silane

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


aBiological properties

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bThermal properties

✓


cMechanical properties

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dEsthetic properties

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View Answer Thermal properties

Macromolecules in Dental Resin is attached by______________?


aCovalent bonds

✓


bIonic bonds

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cHydrogen bonds

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dVander waal forces

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View Answer Covalent bonds

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


a6%

✓


b8%

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c10%

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d21%

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View Answer 6%

The commonly used laser for curing composite resin is______________?


aNd:YAG

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bCO2

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cER:YAG

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dArgon

✓


View Answer Argon

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


aComposites

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bUnfilled resins

✓


cAmalgam

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dPolycarboxylate

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View Answer Unfilled resins

Which of the following absorbs maximum amount of water ?


aMicrofilled resin

✓


bMacrofilled resin

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cHybrid

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dLight cure activated

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View Answer Microfilled resin

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


aGlass ionomer restoratives

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bHybrid resin composites

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cMicrofilled resin composites

✓


dMacrofilled resin composites

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


aIncrease the surface area

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bPermit chemical bonding between resin and enamel

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cCreate surface irregularities in enamel for better mechanical retention of resin

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dCondition the tooth surface for better wetting

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