title: A sonic instrument for retrograde preparation.
authors.affiliation: Department of Endodontics, School of Dental and Oral Surgery, Columbia University, NY 10032.
authors.forename: C D
authors.initials: CD
authors.lastname: Fong
mesh_terms: D003737:Dental Cavity Preparation / Q000295:instrumentation*; D006801:Humans; D012184:Retrograde Obturation / Q000295:instrumentation*; D013016:Sound