Electronic Apex Locators: A Review

Successful root canal treatment depends on thorough cleaning & shaping and 3-dimensional fluid impervious obturation of tooth within the confines of canals. To accomplish this goal, the apical constriction must be precisely recognised during canal preparation, and during the process, perfect control over working length must be maintained. Working length may be determined using a variety of techniques, including the electronic approach. Apex locators have unquestionably been a useful adjuvant to radiographs since their introduction. This article outlines the characteristics of the electronic apex locators that are currently in use, including their evolution, generations, historical context, method of operation, categorization, issues related to usage, and level of clinical acceptability.