An endodontist failed to obturate an accessory canal while obturating main canal. Immediate treatment
1. No treatment, observe periodically
2. Surgical expose and retrofill
3. Retrieve and reobturate
4. Apicetomy and retrofill
📝 Explanation:
If the main canal is well obturated and the tooth becomes asymptomatic, unfilled accessory canals often heal spontaneously. Immediate surgical intervention is not indicated unless symptoms persist or develop.