title: The management of obstructed root canals. The hollow tube technique.
mesh_terms: D003762:Dental Instruments; D003786:Dental Pulp Cavity / Q000601:surgery; D005547:Foreign Bodies / Q000601:surgery*; D010347:Patient Care Planning; D012390:Root Canal Therapy / Q000295:instrumentation*; D014092:Tooth Root / Q000601:surgery