An Apex Locator is used in endodontics to determine the length of the root canal space, using electrical current. These Locators have been around for a while, but were not always accurate. Older models gave incorrect readings if the canal had any fluid in it, for example.
However, the latest models, such as the Root ZX used by our practice, enables us to measure root canal length with extreme precision. These Locators provide the highest possible rate of accuracy, to allow the best possible outcome in root canal treatment.