Accidental perforation of the roots of teeth.
D003737:Dental Cavity Preparation / Q000295:instrumentation; D003762:Dental Instruments / Q000009:adverse effects*; D006801:Humans; D011176:Post and Core Technique / Q000009:adverse effects; D011670:Pulpectomy / Q000295:instrumentation; D012390:Root Canal Therapy / Q000295:instrumentation; D014092:Tooth Root / Q000293:injuries*