Practice Quiz

ADA NBDE National Board Dental Part I

Category - NBDE

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Which one of the following general statements about teeth is NOT true?
  1. Sclerotic dentin increases with age
  2. The specific gravity of teeth decreases with age
  3. Hardness increases with age
  4. Tooth wear increases with age
Explanation
Answer: B - The specific gravity of teeth increases with age. Teeth tend to become more brittle because of an increase in hardness and a decrease in elasticity.
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