Implantology has widespread application for dental cases these days. Although the life of this practice is short, there has been considerable progress in this field and many research laboratories and production sites have been developed in this regard. There are various types of implants on the market, and there is a need to study their features to find out the advantages and disadvantages of them and choose the appropriate implant in each case. One major research is the study of stress distribution on the bone around the implant, which is an effective criterion in osseointegration. In this paper, stress analysis has been conducted on the bone by applying a finite element method. A comparison has been performed among different models of dental implant fixtures.