National Dental Examining Board of Canada (NDEB) Practice Exam

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What phases are most susceptible to corrosion in low copper amalgam?

  1. Silver mercury

  2. Silver tin

  3. Tin mercury

  4. Copper tin

The correct answer is: Tin mercury

When looking at the composition of low copper amalgam, we can see that it is primarily made up of silver and mercury, with a smaller amount of tin. Copper is not listed as an ingredient in low copper amalgam. Therefore, the options A, B, and D are incorrect as they involve copper in some form. The correct answer, C, includes two common components of amalgam, tin and mercury, making it the most susceptible to corrosion.

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