Totally edentulous patients with great bone resorption in the mandible present a significant therapeutic problem for prosthetic rehabilitation, as in many cases it is not possible to obtain stability of the prosthesis. Therefore, the rehabilitation of these individuals with conventional total prostheses may not solve the problems, both functional and psychological. In the study of the present work, the author evaluates the impact on the oral health in patients who used conventional lower total prosthesis after using a model of overdenture prosthesis with the purpose of use in SUS.