title: Introduction of a new rotary endodontic system: progressively tapering files.
authors.affiliation: Center for Endodontics in Tacoma, Wash., USA.
authors.forename: J D
authors.initials: JD
authors.lastname: West
mesh_terms: D002985:Clinical Protocols; D003786:Dental Pulp Cavity / Q000473:pathology; D003804:Dentin / Q000473:pathology; D003809:Dentin, Secondary / Q000473:pathology; D004867:Equipment Design; D006801:Humans; D018583:Pliability; D011670:Pulpectomy / Q000295:instrumentation; D018915:Root Canal Preparation / Q000295:instrumentation*; D012399:Rotation; D013499:Surface Properties