A pronounced developmental groove is usually present on the mesial marginal ridge of a permanent________________?
Correct answer: B. Maxillary first premolar
- A. Mandibular third molar
- B. Maxillary first premolar
- C. Maxillary second molar
- D. Mandibular second premolar
Explanation
A pronounced mesial marginal developmental groove is a classic feature of the maxillary first premolar. It often crosses the mesial marginal ridge and continues onto the mesial root surface.
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