Main Article Content
From the last decade there has been improved technology with Nickel Titanium (NiTi) endodontic files which shows phenomenal growth in endodontic technology. These technologies have made root canal treatment faster, less straining to the dentist and patient. Most importantly, better success rate and results of these new technology instruments lead to accordant, expected, and reproducible shaping of the root canal. This review article is to present the design features of NiTi instruments which are used for root canal space preparation. each design of NiTi instruments have specified roles during shaping and affect the performance of NiTi rotary instruments. In this article summarized every design of NiTi instrument like Taper, Tip design, cutting edge, flute, land, pitch, core, helical and radial angle.