Endodontics · single question
Which tooth carries a greater chance of sodium hypochlorite extravasation beyond the apex during root canal treatment?
Show answer and explanation
Correct answer: A. Maxillary lateral incisor (curved root anatomy)
The maxillary lateral incisor frequently has a notably curved root, increasing the risk of apical perforation, ledging, or transportation during instrumentation/irrigation — any of which can create a pathway for sodium hypochlorite to be inadvertently extruded beyond the apex into periapical tissue, a well-known endodontic emergency.