DEVICE FOR DETECTION OF A TOOTH ROOT APEX

摘要

A device for locating an apex of a root canal of a tooth. The device (1) comprises a first electrode having a conductive probe (5) adapted for insertion into the root canal. A second electrode (6) is configured to electrically contact the patient's body (28). An AC voltage generator (3) is used to provide an AC test voltage signal (20) and a voltage detector (7, 8, 9) detects the resulting AC voltage across the electrodes. An electronic controller (2) coupled to the voltage detector calculates one or more test scores and determines, on the basis of the test score values, the position of the probe tip (25) in the canal (24).