A system for determining and storing a dental root canal depth measurement comprising: at least one electronic apex locator configured to locate the apex of a dental root canal; a dental instrument configured to be inserted into the dental root canal, up to the apex thereof; and a remotely located data storage unit configured to store data concerning the root canal apex. Data concerning the apex of the root canal may be transmitted from the apex locator to the data storage unit via Bluetooth transmission and may be exhibited on a display, along with the depth measurement of the root canal and a digital x-ray showing the location of the dental instrument in the root canal.