Practice Quiz

INBDE Integrated National Board Dental Exam Prep Set 2

Category - NBDE II

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When the alveolar bone is sufficient and deeply embedded to support normal usage of the crown, the tooth has proper:
  1. Crown-to-gum ratio
  2. Gum-to-bone ratio
  3. Crown-to-root ratio
  4. Crown-to-gingiva ratio
Explanation
Answer: C - When the alveolar bone is sufficient and deeply embedded to support normal usage of the crown, the tooth has proper crown-to-root ratio. The crown-to-root ratio can be disrupted by gingivitis, trauma to the root or crown, or degradation of the alveolar bone.
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