A Clinical Evaluation of Accuracy of Apex Locator for Determination of Working Length in Primary Teeth when Compared to Conventional Radiography - A Systematic Review

This systematic review is to assess the literature regarding the clinical accuracy of apex locator and conventional radiography for determination of working length in primary teeth. Articles published from 1st January 2005 to 30th October 2017 in English with Randomized controlled trials and Original prospective clinical trials were selected.526 articles in total were retrieved, out of which 5 were selected for the systematic review. Summary Though, there is no significant difference between the use of EAL and RG, the use of EAL might be useful for protecting the children from exposure to recurrent ionizing radiation, over instrumentation, overfilling, damage to the permanent tooth germs.