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Dental Materials

Practice MCQs under Dental Materials. 627 available Open paginated MCQ list →

1Amalgams
2Dental Cements
3Dental Ceramics & Miscellaneous
4Direct Filling Gold
5Gypsum Products
6Impression Materials
7Metallurgy
8Physical Properties
9Restorative Resins

Questions

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Correct options are highlighted when revealed.

1.What effect does a higher residual mercury content have on a silver amalgam filling?

Lead to cracking of the restorationResult in discoloration and surface degradationEnhance the durability of the fillingReduce the pressure required during condensation

2.Which statement is incorrect regarding high-copper silver alloy when compared to traditional silver alloy?

It exhibits higher tensile and compressive strengthIt demonstrates inferior resistance to tarnishing and corrosionIts marginal strength is improvedThe mercury content in the finished restoration is reduced

3.How do spherical amalgams differ from traditional amalgams?

Contain a higher amount of mercuryNeed greater condensation pressureExhibit extended setting durationsNone of these statements are true

4.Among the different phases of dental amalgam, which one exhibits the lowest strength?

Gamma 1 phaseGamma 2 phaseEpsilon 1 phaseGamma 3 phaseDelta phase

5.According to ADA Specification No. 1, what is the recommended composition for an amalgam alloy?

65% silver, 32% tin, and 3% copper49% silver, 32% tin, and 19% copper65% silver, 29% tin, and 5-6% copperNone of these choices

6.Where is the mercury concentration greatest in an amalgam dental filling?

At the edges of the restorationIn the middle section of the restorationAt the deepest area within the restorationNone of these

7.What does the term 'trituration' refer to?

Breaking down the amalgam alloyBlending the amalgam alloy with mercuryEliminating surplus mercuryNone of these

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