The NTI instruments for processing zirconia have been tailored to the special properties of the material. These instruments facilitate the processing of zirconia in dental practice and the dental laboratory. The Z-Cut diamond instruments are available in bud, egg, round, taper, torpedo and palatinal shapes, in up to 4 grit sizes. The instruments can be used in a wide variety of applications, such as trimming, contouring, trepaning, processing of zirconia abutments and crown cutting.