Cervical cross section of maxillary first premolar is_____________?
Correct answer: B. Kidney shape
- A. Dumbell
- B. Kidney shape
- C. Elliptical
- D. Oval
Explanation
The cervical cross-section of a maxillary first premolar is characteristically kidney-shaped because of the developmental depression on the mesial root surface. This feature helps distinguish it from the more uniformly oval cervical outline of many other premolars.
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