title: Endodontic treatments of mandibular first molar with middle mesial canal: two case reports.
abstract: The mandibular first molars mostly have two mesial canals. In this report, two cases of mandibular first molars with three mesial canals are presented. The middle mesial canal was detected under endodontic microscope and further confirmed by cone-beam computed tomography and angled radiography, respectively. The purpose of this paper was to highlight the possibility of an aberrant root canal in a mandibular first molar and to help reduce the failure rates of the dental pulp treatment of the mandibular first molar.
authors.affiliation: Department of Operative Dentistry and Endodontic, College of Stomatology, Fourth Military Medical University, Xi'am, Shaanxi, People's Republic of China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Lu
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Yang
authors.forename: Xiao Jing
authors.initials: XJ
authors.lastname: Liu
authors.forename: Shu Yong
authors.initials: SY
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Yu
mesh_terms: D000328:Adult; D054893:Cone-Beam Computed Tomography / Q000379:methods; D003786:Dental Pulp Cavity / Q000002:abnormalities*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible; D008853:Microscopy; D008875:Middle Aged; D008963:Molar / Q000002:abnormalities*; D010485:Periapical Periodontitis / Q000628:therapy; D011671:Pulpitis / Q000628:therapy; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*