Abstract
Using strength of materials combined with computer programming technique, influence of variation of biting force as to internal and external forces produced by masticatory muscle forces, temporomandibular joint reaction forces and biting forces with teeth was analyzed. According to an increase of biting forces, shearing force, bending moment and torsion moment increased in a positive linear form. The method presented in this study is useful for analysis of influence of biting force with respect to internal and external forces of a human mandible by strength of materials.