title: Bacteriologic status of the root canal after sonic, ultrasonic and hand instrumentation.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000302:isolation & purification*; D003786:Dental Pulp Cavity / Q000382:microbiology*; D004285:Dogs; D012390:Root Canal Therapy / Q000295:instrumentation*; D013016:Sound; D014464:Ultrasonic Therapy / Q000295:instrumentation*; D014732:Vibration