Endodontics · single question
Applying topical anesthetic INSIDE the canal can cause:
Show answer and explanation
Correct answer: B. It coats the canal wall and interferes with obturation
Intracanal topical anesthetic coats walls and interferes with obturation/sealing.
- A. Not the relevant adverse effect of an intracanal anesthetic film.
- B. Correct. The anesthetic film on dentin walls impairs adaptation of sealer/gutta-percha, compromising the seal.
- C. The opposite — it degrades, not improves, the seal.