The occlusal surface shape of a 3 cusped mandibular second premolar_________________?
Correct answer: C. Square
- A. Oval
- B. Elliptical
- C. Square
- D. Tetrahedral
Explanation
The three-cusp mandibular second premolar has a broad, nearly square occlusal outline because its two lingual cusps give the lingual half substantial width. The two-cusp type is more commonly oval or rounded.
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