title: A comparison of the effect of modified and nonmodified instrument tips on apical canal configuration. Part II.
authors.forename: S E
authors.initials: SE
authors.lastname: Powell
authors.forename: P D
authors.initials: PD
authors.lastname: Wong
authors.forename: J H
authors.initials: JH
authors.lastname: Simon
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D004867:Equipment Design; D012390:Root Canal Therapy / Q000295:instrumentation*