Endodontics · single question
During RCT of a necrotic tooth, bleeding occurs after irrigation. Most likely cause?
Show answer and explanation
Correct answer: D. Sodium hypochlorite accident (extrusion beyond apex)
NaOCl extrusion beyond apex causes: immediate severe pain, swelling, bleeding into canal, tissue necrosis. A necrotic tooth should have no vital tissue — unexpected bleeding = NaOCl reacting with periapical tissue.