title: The three wave concept of Hero 642.
authors.affiliation: University of Rennes I, CHRU of Rennes.
authors.forename: J M
authors.initials: JM
authors.lastname: Vulcain
authors.forename: P
authors.initials: P
authors.lastname: Calas
mesh_terms: D003755:Dental High-Speed Technique; D003762:Dental Instruments; D004548:Elasticity; D006801:Humans; D009532:Nickel; D018915:Root Canal Preparation / Q000295:instrumentation*; D012399:Rotation; D014025:Titanium
chemical_list: C040654:titanium nickelide; D009532:Nickel; D014025:Titanium