The area of No. 11 and No. 12 will provide instrumentation challenges due to which of the following canine and first premolar features?

Question

Quizplus · Accepted Answer

The crowns of anterior teeth are longer than the crowns of posterior teeth. The maxillary canine has the longest crown in the dentition, and the first premolar crown is much shorter. The distal crest of curvature of the maxillary canine is also very prominent. Posterior teeth are also wider in a facial/lingual direction than anterior teeth. In the transition area between the anterior canine and the posterior first premolar, access to proximal surfaces of these adjacent teeth is limited. In addition, the pronounced mesial concavity of the maxillary first premolar makes instrumentation even more challenging.

The Area of No