Width of the periodontal ligament is least at______________?
Correct answer: C. Fulcrum of rotation
- A. Cervical third
- B. Apical third
- C. Fulcrum of rotation
- D. It has uniform width
Explanation
The periodontal ligament is narrowest around the middle third of the root, which corresponds approximately to the fulcrum or center of rotation during tooth movement. It is generally wider toward the cervical and apical regions.
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