Patent ID: 7347830
Filing Date: 2008-03-25
Classification: A61C

Abstract:
1. An assembly for measuring the penetration depth of a dental instrument into a root canal of a tooth, said assembly comprising: a base element for bracing onto a tooth to be treated, said base element being substantially omega-shaped having two legs and an arch extending along a plane laterally displaced from the legs; an electrically non-conductive U-shaped bracket having two parallel extending legs and a web portion therebetween configured to be coupled to the arch of said base element; and an electrically conductive guiding member affixable to said bracket and disposed, when assembled, above a tooth clamped between the legs of said base element, said guiding member having a first portion with an electrical terminal for electrically connecting with a socket of an apex location measuring device, a second portion extending in one of said legs of the bracket and a third portion extending above said tooth clamped by said base element, whereby, in use, a portion of said dental instrument makes electrical contact with said guiding member to measure the penetration depth of the dental instrument into the root canal of the tooth.