title: The conservative retrieval of silver cones in difficult cases.
mesh_terms: D012534:Dental Scaling / Q000295:instrumentation; D006801:Humans; D012387:Root Canal Filling Materials; D012390:Root Canal Therapy / Q000295:instrumentation* / Q000379:methods; D012834:Silver; D014465:Ultrasonics / Q000295:instrumentation
chemical_list: D012387:Root Canal Filling Materials; D012834:Silver