In this research, by using limited elements, distribution of tensions in mesial and distal rests on root surfaces of abutment teeth of removable partial dentures was studied. First mandibular premolar was divided into 48 triangular elements. mastication force  and thickness of covering tissue were considered 30 pounds and 2.5 mm respectively. During the movements toward the tissue, the tension on abutment teeth with mesial rests was lower and more uniform in comparison to distal rests.