An oral appliance is provided that controls positioning of a patient's jaw. A first dental encasing component is formed to overlay at least a portion of the patient's upper teeth and has a lingual surface, a labial surface, and at least one ledge extending along the labial surface of the first dental encasing component. A second dental encasing component is formed to overlay at least a portion of the patient's lower teeth and has a lingual surface and a labial surface. At least one rotating body is rotatably fixed to the labial surface of the second dental encasing component. The at least one rotating body and the at least one ledge are disposed in positions on their respective labial surfaces to enable the at least one rotating body to contact and rotate along a length of the at least one ledge as the patient's mouth closes, advancing the patient's jaw forward.