In evaluation of the long-term success of a dental implant, the reliability and the stability of the implant-abutment and implant bone interface plays a great role. In general, the success of the treatment depends on many factors affecting the bone-implant, implant-abutment and abutment-prosthesis interfaces. In the literature, many researcher are investigated static loading effects on the implant however dynamic loading and fatigue effects has not investigated formally. In this study, static dynamic and fatigue behaviors of the implant are investigated. Dynamic loads in 5 min applied on occlusal surface. Fatigue life the implant calculated based on Goodman, Soderberg, Gerber and mean-stress fatigue. (C) 2006 Elsevier Ltd. All rights reserved.