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.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

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

Silver mercury
Silver tin
Tin mercury
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.