When topical anesthetic is inadvertently applied intracanal, what is the primary clinical concern?

Correct answer: C. Coats canal walls and interferes with obturation

• A. ❌ Topical anesthetic does not create an apical seal.
• B. ❌ Topical anesthetic does not cause apical bleeding.
• C. ✅ Correct. Topical anesthetic contains oily/waxy vehicles (benzocaine base) that will coat the dentin walls of the canal, creating a physical barrier that interferes with sealer penetration and gutta-percha obturation. This is why topical anesthetics must never be placed intracanally.
• D. ❌ The pulp is typically already non-vital during obturation stage — and topical anesthetic does not cause irreversible pulpitis.