In this thesis there was an analysis of the impact of positioning the mini - dental implants on the bending stress in edentulous jaws. Edentulism, partial or complete, is even today, with all the knowledge and numerous techniques of prevention existing, still very present in the world. Edentulism is a problem that needs an intervention because a patient due to disruption of function and aesthetics may develop psychosocial problems, and each of them has problems with functions of stomatognathic system. As a solution to edentulism those that stand out the most are removable dentures for three or four osseous implants. The implants are at present most commonly made of titanium and its alloys because it is the type of material which is bio functional, biocompatible and it is not subject to biodegradation. It is very important to know the mechanical properties of the material used as a substitute so as to prevent rejection or fracture of the implant, and thus even greater patient dissatisfaction. Modeling toothless jaws and properly placing the mechanical properties of bone is also a demanding job because from the mechanical point of view a bone is a composite material with different solid and liquid phases. Thus the structure of the bone tissue is complex, multiphase, heterogeneous and anisotropic. In the solution of these problems Simpleware software was of great help. Using one of the numerical methods, it was necessary to determine the equivalent stress in the bone surrounding the implant. Finite element method (FEM) and analysis software Ansys Workbench were chosen for this task. Stresses in the bone around the implant threads do not exceed 10 MPa. The maximum stress in the bone (40-50 MPa) appear around the neck of the implant, due to occlusal forces that bend the implant and thus put additional strain on the bone. The results of stress are satisfactory. The stress analysis of the implant with a changed position, it was concluded that the stress was approximately equal, which means that only the positioning of implants and their position in the bone does not play a significant role. Applying the stress analysis for the mini - dental implants larger in diameter, it was concluded that the stress in the surrounding bone was reduced, around threaded implants, as well as around the implant neck.