Dental implant is a surgical component that interfaces with the bone of the jaw to support a dental prosthesis. Dental implants are used to retain and support fixed and removable dental prostheses. Dental implants are subjected to continuous loading due to the mastication forces which makes it necessary to study the effect of fatigue life. Fatigue life depends on the implant design, different biomaterials as well as morphological characteristics of the patient. The objective is to study the effect of different biomechanical parameters on the fatigue behaviour of commercially available dental implants. The effect of the surface roughness and surface coating techniques is being studied for the commercial dental implant. A study on the properties of the biomaterials available for the dental implants is carried out. The geometric parameters of the available commercial dental implants are varied and the effect on the fatigue life is observed on the basis of probabilistic method which predicts the failure probability of the implant. Finally an implant based on the biomechanical parameters is proposed owing to the maximum life in fatigue failure A brief study on the surface coating techniques is done for the commercial dental implant.