Practice Quiz

ADA NBDE National Board Dental Part II

Category - NBDE II

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Radiographic changes of teeth that are no longer functional include:
  1. Reduced trabeculation of bone and narrowing of periodontal ligament space
  2. Inflammation of trabeculation of bone and expansion of periodontal ligament space
  3. Increase alveolar space and decrease socket depth
  4. Decreased alveolar space and decrease socket depth
Explanation
Answer: A - Radiographic changes of teeth that are no longer functional show a reduced trabeculation of bone and a narrowing of the periodontal ligament space. This is most often seen when there are excessive occlusal forces. Other indications of excessive force include fibrosis, cemental tears, pulpal necrosis, and calcification.
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