The Apex Locator is a revolutionary device, and without it, root canal treatment is much more risky, becoming "blind". The great advantage of this device is the ability to measure the length of the tooth root with maximum precision, which always leads to a correct and complete root canal treatment. The doctor watches the trajectory of the needle along the canal in real time on a screen. In addition, the images are complemented by sound warnings, which multiply as you approach the apex.