Endodontics · single question
Which tooth has a mesial root concavity that creates the greatest risk of perforation during endodontic access?
Show answer and explanation
Correct answer: A. Maxillary first premolar
Maxillary first premolar — mesial concavity → perforation risk on access.
- A. Correct. Its prominent mesial concavity ('mesial fluting') makes strip/lateral perforation a known risk.
- B. Furcation concavities exist but the classic mesial-concavity perforation tooth is the maxillary first premolar.