A dental implant replaces tooth root and the bone is better preserved. A dental implant provides more advantages over other tooth replacement options. In every condition when a load is applied on the implants results stress in adjacent bone too. The amount of the stress determines the life and stability of the implants.Different factors have effect on the amount of the stress. The two main factors which have significant effect on the stress are the implants geometry and material. In the study, four models, a cylinder and three conic with various angles, built with 80% crystalline HA coated ECAP nanostructure titanium and porous titanium were analyzed.FEM analysis conducted with theANSYS 14 software. The results show the drastic effect of implant’s material on the maximum equivalent stress in the bone. The results indicate that cylinder 80% crystalline HA coated ECAP nanostructure titanium implant has the minimum stress concentration.
