Undercut tool for fabricating undercut recess in bone or tooth, has cylindrical base body, on which lugs are arranged distributed around bore engaging base body and lugs are bent with help of pin or bolt positioned in bore in movable manner

摘要

The undercut tool has a cylindrical base body, on which lugs are arranged distributed around a bore engaging the base body. The lugs are bent with the help of a pin or bolt positioned in the bore in movable manner during the cutting or polishing process. The lugs have cutting edges and polishing unit at their outer surfaces. An independent claim is also included for a plateau-drill for drilling and milling of teeth.