The contact area on the distal surface of a maxillary first premolar should be placed in________________?
Correct answer: A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure
- A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure
- B. Occlusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure
- C. Occlusal 3rd of proximal surface with facial embrasure greater than lingual embrasure
- D. Middle 3rd with facial embrasure greater than the lingual embrasure
Explanation
The distal contact of the maxillary first premolar lies in the middle third, and the lingual embrasure is larger than the facial embrasure because the contact is positioned relatively facially. This matches option a.
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