title: Mandibular second molar with C-shaped canal morphology and five canals: report of a case.
abstract: This article reviews a case involving endodontic treatment of a mandibular second molar with C-shaped canal morphology and five separate canals. The C-shaped canal variation of morphology is unusual and can lead to difficulties during treatment. Preoperative radiographs are limited in their ability to detect this entity; for a favorable treatment outcome, knowledge of the C-shaped canal's existence and morphology is essential.
authors.affiliation: Department of Endodontics, College of Dentistry, University of Oklahoma, Oklahoma City, USA.
authors.forename: Fred W
authors.initials: FW
authors.lastname: Benenati
mesh_terms: D000328:Adult; D003786:Dental Pulp Cavity / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008334:Mandible; D008963:Molar / Q000002:abnormalities*; D010485:Periapical Periodontitis / Q000628:therapy; D011671:Pulpitis / Q000628:therapy; D018915:Root Canal Preparation; D014092:Tooth Root / Q000002:abnormalities