National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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Overtrituration of amalgam increases which of the following properties?

Malleability
Creep
Oxidation resistance
Elasticity

The correct answer is: Creep

Overtrituration of amalgam increases the property of creep. This is because overtrituration leads to the formation of more free mercury, which interferes with the formation of a strong and dense amalgam structure. The other options - malleability, oxidation resistance, and elasticity - are incorrect as they are either not affected or even reduced by overtrituration. Malleability is not affected because despite overtrituration, the amalgam still has the same composition of metals. Oxidation resistance is not improved by overtrituration, in fact, it may even decrease due to the increase in free mercury. Elasticity is also not affected as overtrituration does not change the elasticity of the amalgam. Therefore, the answer is B - creep, as it is directly affected by overtrituration.