Patent ID: 6482008
Filing Date: 2002-11-19
Classification: A61B,A61C

Abstract:
A method of devitalizing a tooth, comprising the steps of inserting in a root canal through an aperture extending to an entry of the root canal an electrode in form of a needle connected to an electronic apparatus that generates both an acoustic and visual signal when a tip of the needle is close to an apical hole; generating high-frequency electric pulses; providing a plurality of preset values of power, time and frequency according to a type of a tooth to be treated for selection by the user and selecting a preset value to destroy that part of a vascular nervous tissue in contact with the needle and to coagulate a vascular bundle that has not been destroyed, so that when the tip of the needle is close to the apical hole, the high-frequency electric pulses are generated and transmitted to the tooth by an operator thereby devitalizing the tooth.