title: Hand versus ultrasonic instrumentation: its effect on canal shape and instrumentation time.
authors.forename: D
authors.initials: D
authors.lastname: Pedicord
authors.forename: M E
authors.initials: ME
authors.lastname: elDeeb
authors.forename: H H
authors.initials: HH
authors.lastname: Messer
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D006801:Humans; D008963:Molar; D010865:Pilot Projects; D012390:Root Canal Therapy / Q000295:instrumentation* / Q000379:methods; D013997:Time Factors; D014464:Ultrasonic Therapy / Q000295:instrumentation*