As a result of recent advances in metallurgy, we now have both heat treated and non-heat treated rotary files. They each possess different properties and both have distinct indications for use, as well as limitations. Drs. Koch believes that these improvements should be employed to their utmost advantage. Consequently, a blended technique has been developed that combines the advantages of both heat treated and non-heat treated files into one Awesome Endodontic Technique. A technique that is completely intuitive by design!