title: Mandibular first molars with multiple mesial canals.
authors.affiliation: Department of Endodontics, College of Dentistry, University of Illinois at Chicago 60612, USA.
authors.forename: E L
authors.initials: EL
authors.lastname: Jacobsen
authors.forename: K
authors.initials: K
authors.lastname: Dick
authors.forename: R
authors.initials: R
authors.lastname: Bodell
mesh_terms: D000328:Adult; D003786:Dental Pulp Cavity / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D008963:Molar / Q000002:abnormalities*; D012086:Reoperation; D012390:Root Canal Therapy; D014092:Tooth Root / Q000002:abnormalities*