Biomaterials implanted in the body may be exposed to various damage mechanisms depending on human movement behavior. It is important to simulate the damage mechanisms to which biomaterials are exposed in a laboratory environment. This study aims to investigate the effect of the lower jaw movement mechanism on the wear resistance of the composite material by designing and manufacturing two stepper motor-driven wear devices that can model human jaw movement through chewing simulation. The composite test specimen was subjected to both 0.7-mm and 0.3-mm lateral movement at a 2.0-Hz chewing frequency, using a 6-mm Al2O3 abrasive antagonist, at room temperature, for 120,000 chewing cycles. In addition, a finite element analysis was performed using a titanium base material for the chewing wear mechanism. The wear volume loss of the composite material was analyzed after the test procedures using a 3D non-contact profilometer. As the lateral movement distance increased, a wear mechanism in the tested composite material was observed, accompanied by increasing wear volume loss. However, this increase in the rate of wear volume loss is not linearly correlated to the amount of lateral movement. This can be explained by particles separated by plastic deformation in the wear area acting as third-body abrasives during the chewing test procedures.