Abstract: An endodontic file (2) for use with a dental instrument has at least one cord (6) and a wire (8) wound around at least a major portion of the cord and having an abrasive outer surface (10). A handle having a gripping section is provided for gripping the end of the file and is coupled to the file by a coupler that may be made of a vibration absorbing material.

Abstract: There is provided a coupling device for electrically coupling a dental instrument to an electrical connector, including a tubular clasp made of an electrically conductive material having a first portion attachable to the connector and a second portion attachable to the dental instrument, the second portion having a slot facilitating insertion and holding of the dental instrument while performing a dental procedure.

Abstract: An illuminator for medical instruments includes a first body part having, at one end, an instrument coupling head and a lighting element and, at its other end, a first electrical connector releasably attachable to a second, compatible electrical connector of a power source.

Abstract: The invention provides an assembly for measuring the penetration depth of a dental instrument into a root canal of a tooth. The assembly has a base element configured to be clampingly braced onto a tooth to be treated; an electrically conductive guiding member affixable to the base element and disposed, when assembled, above the tooth, thereby, in use, a portion of the dental instrument makes electrical contact with it. The guiding member further includes an electrical terminal connectable to an apex location measuring device. Methods for continuously measuring penetration depths of a dental instrument into a root canal of a tooth are also provided.

Abstract: Apparatus for determining the apex of a dental root canal in a tooth includes a software operated microcontroller having a pulse generator, a memory and an analog to digital converter (ADC), the pulse generator feeding pulses to a gain control circuit for controlling the amplitude of the pulses. The apparatus also includes a driver receiving signals from the control circuit for feeding the signals to an electrically conductive shaft having a leading edge and a dental instrument connectable thereto, an input buffer receiving signals from the dental instrument and feeding the signals to the ADC, and a display for exhibiting data concerning the distance of the leading edge of the shaft from the root canal apex. A method for determining the apex of a dental root canal in a tooth is also provided.

Abstract: There is provided an endodontic device for cleaning, filing or reaming root canals, including a metallic, flexible strand having an edge, an effective section and a connecting section and a coupling head connected thereto. The strand is coated along its effective section with a thin layer of a binder having abrasive particles embedded therein. A method for cleaning, filing, or reaming root canals and for manufacturing an endodontic device, is also provided.