title: [Comparative study of the efficiency and time consumption of gyrematic handpieces and endodontic hand instruments].
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D005069:Evaluation Studies as Topic; D006801:Humans; D011670:Pulpectomy / Q000295:instrumentation; D012390:Root Canal Therapy / Q000295:instrumentation*; D013997:Time Factors