ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,714,538, issued on Aug. 25.
"Access guide and drill kit to be used with same for endodontic access cavity preparation and method of use" was invented by David W. Kelliny (Torrance, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A set of drill bits and/or burrs for attaching to a hand piece and fitting into an access guide during endodontic access cavity preparation is provided. The drill bits are optionally grouped into two types: a high speed, friction grip attachment type drill bit and a slow speed, latch attachment type drill bit. Each of the drill bits has a different longitudinal length for performing different functions during operation pro...