Effects of TiN and WC coating on the fatigue characteristics of dental implant

► Most of the dental implant failure occurs in the connection part of screw with loosening or fracture. ► For this problem, the abutment screw was coated with TiN and WC film using EB-PVD and sputtering. ► Fatigue test was performed for estimating the fatigue behavior of TiN and WC coated abutment screw according to the ISO 14801. ► The fatigue characteristics of implant system can be improved by TiN and WC film coating on the abutment screw surface.