title: Long-term follow-up on C-shaped mandibular molars.
abstract: Three cases of mandibular second molars with C-shaped root canal morphology are described. Two of these molars did not radiographically show the usual anatomic configuration of two separated roots, but rather had a single conical root. Only two root canals orifices were observed in the pulp chamber floor: a mesial-lingual orifice in its normal position and a buccal C-shaped fissure that was continuous from the normal location of the mesiobuccal canal to that of the distal canal. The fissure became smaller in the apical third, ending in a distal direction. The third case, a second molar extracted because of severe periodontal involvement showed, after sectioning, a C-shaped root with connections between all three canals.
authors.affiliation: Department of Restorative Dentistry and Endodontology, University of Connecticut, Farmington 06030, USA.
authors.forename: D
authors.initials: D
authors.lastname: Ricucci
authors.forename: E A
authors.initials: EA
authors.lastname: Pascon
authors.forename: K
authors.initials: K
authors.lastname: Langeland
mesh_terms: D000328:Adult; D003786:Dental Pulp Cavity / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D008963:Molar / Q000002:abnormalities*; D012390:Root Canal Therapy; D014092:Tooth Root / Q000002:abnormalities*