
This is a clinical case of a maxillary right first molar with four root canals using a hyflex edm rotary file system. A successful endodontic treatment of a tooth depends on shaping, cleaning and filling of the canal system.With the innovative mechanism of HyFlex EDM files which are produced using process called Electrical Discharge Machining. The EDM process results in a file that is extremely flexible and fracture resistant. In fact, HyFlex EDM files are up to 700% more resistant to cyclic fatigue compared to traditional NiTi files