Practice Quiz

INBDE Integrated National Board Dental Exam Prep

Category - INBDE

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Which of the following ridges are the rounded borders of enamel that form the margins of the surfaces of premolars and molars, mesially and distally?
  1. Triangular ridges
  2. Marginal ridges
  3. Oblique ridges
  4. Vertical ridges
Explanation
Answer: B - Marginal ridges are those rounded borders of enamel that form the margins of the surfaces of premolars and molars, mesially and distally. Marginal ridges give the teeth structural resistance to fracturing, as well as helping reduce food during chewing.
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