title: Endodontic management of C-shaped root canal system of mandibular first molar by using a modified technique of self-adjusting file system.
abstract: C-shaped canal system is a seldom-found root canal anatomy which displays a challenge in all stages of endodontic treatment. According to the literature, this type of canal morphology is not a common finding in the mandibular first molar teeth.
  
  
  
  This case report presents endodontic management of a mandibular first molar with a C-shaped canal system.
  
  
  
  Root canal system was cleaned and shaped by nickel-titanium (NiTi) rotary instruments combined with self-adjusting file (SAF). Obturation was performed using warm, vertical condensation combined with the injection of warm gutta-percha. Follow-up examination 12 months later showed that the tooth was asymptomatic. The radiological findings presented no signs of periapical pathology.
  
  
  
  The clinician must be aware of the occurence and complexity of C-shaped canals in mandibular first molar teeth to perform a successful root canal treatment. The supplementary use of SAF after application of rotary instruments in C-shaped root canals might be a promising approach in endodontic treatment of this type of canal morphology.
authors: Assistant Professor, Department of Endodontics, Dentistry Faculty, Kocaeli University, Kocaeli Turkey, Phone: 905325267608, e-mail: dhelvacioglu@gmail.com.
authors: Dilek
authors: D
authors: Helvacioglu-Yigit
mesh_terms: D063405:Anatomic Variation; D003722:Dental Alloys / Q000737:chemistry; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D004853:Epoxy Resins / Q000627:therapeutic use; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D008334:Mandible; D008963:Molar / Q000033:anatomy & histology*; D009532:Nickel / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000295:instrumentation*; D014025:Titanium / Q000737:chemistry; D055815:Young Adult
chemical_list: D003722:Dental Alloys; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C534916:epoxy resin-based root canal sealer; C040654:titanium nickelide; D009532:Nickel; D006171:Gutta-Percha; D014025:Titanium
keywords: Dental anomalies; Root canal treatment; Rotary endodontics.