title: Maxillary first molar with seven root canals diagnosed with cone-beam computed tomography scanning: a case report.
abstract: BACKGROUND
  The purpose of this article was to emphasize the importance of having a thorough knowledge about the root canal anatomy.
  
  
  METHODS
  This case report presents the endodontic management of a maxillary first molar with three roots and seven canals. The clinical detection of the seven canals was made using a surgical operating microscope and confirmed using cone-beam computed tomography (CBCT) scanning.
  
  
  RESULTS
  CBCT axial images showed that both the palatal and distobuccal root have a Vertucci type II canal pattern, whereas the mesiobuccal root showed a Sert and Bayirli type XV canal configuration.
  
  
  CONCLUSIONS
  This report describes and discusses the variation in canal morphology of maxillary first molar and the use of latest adjuncts in successfully diagnosing and negotiating them.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Meenakshi Ammal Dental College and Hospital, Tamil Nadu, India. drkottooran@gmail.com
authors.forename: Jojo
authors.initials: J
authors.lastname: Kottoor
authors.forename: Natanasabapathy
authors.initials: N
authors.lastname: Velmurugan
authors.forename: Rajmohan
authors.initials: R
authors.lastname: Sudha
authors.forename: Senthilkumar
authors.initials: S
authors.lastname: Hemamalathi
mesh_terms: D000328:Adult; D054893:Cone-Beam Computed Tomography; D003786:Dental Pulp Cavity / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008437:Maxilla; D008853:Microscopy / Q000295:instrumentation; D008963:Molar / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D009811:Odontometry / Q000379:methods; D012390:Root Canal Therapy / Q000295:instrumentation / Q000379:methods