title: Work-saving devices in endodontics: efficacy of sonic and ultrasonic techniques.
mesh_terms: D000818:Animals; D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D006801:Humans; D008251:Macaca; D012390:Root Canal Therapy / Q000295:instrumentation*; D013016:Sound; D014464:Ultrasonic Therapy / Q000295:instrumentation*