title: Electronic apex locators may be better at determining endodontic working length than radiographs and could reduce patient radiation exposure.
abstract: BACKGROUND
  Clinical efficacy of electronic apex locators: Systematic review. Martins JNR, Marques M, Mata A, Carames J.J Endod 2014;40(6):759-77.
  
  
  METHODS
  Nicholas Chandler, BDS, MSc, PhD, LDSRCS, MRACDS (Endo), FDSRCPS, FDSRCSEd, FFDRCSI PURPOSE/QUESTION: The authors conducted a systematic review to compare radiographic and electronic methods of determining endodontic working length.
  
  
  BACKGROUND
  The authors reported no external funding sources.
  
  
  METHODS
  Systematic review
  
  
  METHODS
  Level 2: Limited-quality patient-oriented evidence STRENGTH OF THE RECOMMENDATION GRADE: Grade B: Limited-quality patient-oriented evidence.
authors: Associate Professor/Specialist Endodontist, Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, P.O. Box 647, Dunedin 9054, New Zealand, Tel.: +64 3 4797124; fax: +64 3 4795079. Electronic address: nick.chandler@otago.ac.nz.
authors: Nicholas
authors: N
authors: Chandler
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D055615:Electrical Equipment and Supplies / Q000592:standards*; D006801:Humans; D009811:Odontometry / Q000295:instrumentation*; D018915:Root Canal Preparation / Q000295:instrumentation*; D019227:Tooth Apex / Q000033:anatomy & histology*