Step-back eliminating tapered dental cutting instruments for improved root canal treatment and method

Abstract

A set of endodontic cutting instruments, each having handles and each having a different working tip diameter incrementally increasing in size from one instrument to the next. The set includes a first smaller standard size endodontic cutting instrument having a grasping end with a first color according to a standard color code, a second larger standard size endodontic cutting instrument having a grasping end with a second color according to the standard color code and a non-standard intermediate size endodontic instrument having a size between the first smaller standard size and the second larger standard size and having a grasping end with a color combination including a first portion having the first standard color corresponding to the first smaller standard size and a second portion having the second standard color corresponding to the second larger standard size. Nonstandard taper portions on the cutting instruments are provided to smooth stair step root canal cavities. The non-standard taper portions are identified by non-ISO color portions on the handles.

Dependencies are inferred from the claim text.