Where is the contact area located on the distal surface of a maxillary first premolar?

Show Answers

At the center of the middle third, with the buccal embrasure broader than the lingualAt the center of the middle third, with the lingual embrasure broader than the buccalSlightly below the junction between the occlusal and middle thirds of the crown, featuring a wide occlusal embrasureWithin the cervical third, where the buccal embrasure is wider than the lingual

Explanation

The distal contact area of the maxillary first premolar is positioned just below the junction of the occlusal and middle thirds of the crown. This placement results in a wide embrasure on the occlusal side. Other options either misplace the contact area or incorrectly describe the relative widths of the embrasures.