Cleaning and shaping of the canal has been recognized as pivotal step in endodontic therapy for obtaining success in the root canal treatment. It has long been recognized that the use of stainless steel hand files is associated with undesirable complications such as transportation, ledge formation and perforation following root canal preparation. The emergence of Nickel titanium (NiTi) rotary instruments has transfigured the root canal treatment by reducing the operator fatigue, time required to complete the preparation and minimized the procedural errors. But NiTi instruments carry inherent risk of root dentinal crack formation which can further progress to vertical root fractures (VRFs) due to constant stress of occlusal forces resulting in failure of root canal treatment

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