title: C-shaped root canal in a maxillary first molar: a case report.
abstract: OBJECTIVE
  This case report presents an unusual C-shaped root canal system in a maxillary first molar tooth.
  
  
  CONCLUSIONS
  Although C-shaped root canals are most frequently seen in the mandibular second molar, they may also appear in maxillary molars. A literature search revealed only a few case reports of C-shaped root canal systems in maxillary molars. The present case describes a C-shaped canal in the buccal root of a maxillary first molar. The endodontic access cavity displayed two canal orifices, one leading to the canal system in the buccal root, the other into the palatal root canal system. In the buccal root, what appeared to be the mesial and distal canals joined to form a single C-shaped canal.
  
  
  CONCLUSIONS
  --Careful examination of radiographs and the internal anatomy of teeth is essential.-- The location and morphology of root canals should be identified at high magnification under the microscope.
authors.affiliation: Department of Endodontics, Faculty of Dentisty, Hacettepe University, Ankara, Turkey. zeliha@hacettepe.edu.tr
authors.forename: Z
authors.initials: Z
authors.lastname: Yilmaz
authors.forename: B
authors.initials: B
authors.lastname: Tuncel
authors.forename: A
authors.initials: A
authors.lastname: Serper
authors.forename: S
authors.initials: S
authors.lastname: Calt
mesh_terms: D000328:Adult; D003786:Dental Pulp Cavity / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008437:Maxilla; D008963:Molar / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011859:Radiography; D018915:Root Canal Preparation; D014092:Tooth Root / Q000000981:diagnostic imaging / Q000473:pathology