National Dental Examining Board of Canada (NDEB) Practice Exam

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Prepare for the National Dental Examining Board of Canada (NDEB) Test. Study with flashcards and multiple choice questions, each question offers hints and detailed explanations. Achieve success in your exam!

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!

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Leucite is added to porcelain in metal crowns to?

Decrease opacity
Increase translucency
Increase strength
Improve aesthetics

The correct answer is: Increase strength

Leucite is a type of crystal that is added to porcelain to increase its strength. It acts as a reinforcing agent, making the porcelain more resistant to fracture and wear. Option A is incorrect because leucite does not decrease the opacity of porcelain; in fact, it can make it more translucent and thus more aesthetically pleasing. Option B is also incorrect because leucite does not improve translucency, but rather increases strength. Similarly, option D is incorrect because although leucite may improve the overall aesthetic appearance of the porcelain, its main purpose is to increase strength in metal crowns.