title: [Histological evaluation of the efficiency of manual or ultrasonic instrumentation in upper molars (curved or twisted wide and narrow canals)].
authors.forename: R M
authors.initials: RM
authors.lastname: Esberard
authors.forename: L S
authors.initials: LS
authors.lastname: Utrilla
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D005069:Evaluation Studies as Topic; D006801:Humans; D008963:Molar; D012390:Root Canal Therapy / Q000379:methods*; D014092:Tooth Root / Q000033:anatomy & histology; D014464:Ultrasonic Therapy / Q000379:methods*
vernacular_title: Avaliação histológica da eficiência das instrumentações manual e ultra-sônica em molares superiores (canais amplos e atresiados curvos ou retos).