Abstarct: In this thesis, motion of the particles’ Simulation in the fluid flow is done in a one-way coupling in sandblasting dental implants. Simulation has been done to investigate the characteristics of the particles in different situations. Fundamentally, implant must be made of materials which compatible with the human body. Due to a combination of high corrosion resistance Low weight and good mechanical properties, Titanium is ideal. The structure of Medical and dental of traditional titanium is not porous. The dense structure of the implant can lead to a mismatch between Young's modulus implants and natural cortex. The morphology of the implant plays a vital role in the bone-implant surface and can enhance the integration process of implant. Due to the use of non-porous titanium dental implants, pose little contact with the bone’s surface. To create more contact area with bone various methods are used. Due to better roughness and more Contact surface, blasting method among other methods was chosen. For numerical simulation OpenFoam software and Lagrangian method were used. To verify the correctness and accuracy of studies Comparison of analytical and numerical methods have been used in Stokes flow. According to simulations carried out in this study it was observed that reducing the particle diameter and move to the center tube for injecting particle leads increasing velocity and its kinetic energy. Also, for alumina particles, velocity is less than silicon carbide particles. But the kinetic energy of alumina is more compared with silicon carbide.