Recent Advances in Apex Locators- A Review.

Apex locator is an electronic device used in endodontics that determines the position of the apical construction and it determines the root canal space length. Usually the correct working length determination is identified by using radiograph,but electronic apex locators are being used increasingly nowadays. These electronic apex locators reduce the number of radiographs required and assist where radiographic methods create difficulties. Detection of root canal perforation is also considered as one of the roles of an apex locator. The benefit of apex locators include that these devices are much less affected by fluid conductive media in the canal. Some experience in the use of the apex locator will allow the clinician to recognize the differences immediately. It is used to find the working length determination, cementing the file in place, extracting the tooth and locating the file under magnification in the root canal. This review assesses the advantages and advances that would enable the use in dentistry and determination of working length. [ABSTRACT FROM AUTHOR]