ENDODONTIC FILE WITH WORKING LENGTH ADJUSTMENT SCALE

摘要

An endodontic file is provided for use during root canal therapy. The endodontic file has a handle, a blade, and a marker. The marker provides a working length adjustment scale that is integrated with the handle and the blade. After adjustment of the endodontic file to a desired working length, compared to the depth of a subject root canal, the marker is maintained in a substantially static position relative to the blade, which is itself stationary relative to the handle. The endodontic file reduces the chances of unintended complications during root canal therapy, for example if the blade were to penetrate into various tissues located in proximity to the root canal.