An intraoral orthosis device that has a bite tray nested in an outer tray. The bite tray has a higher deformation temperature than the outer tray at an elevated temperature. The thickness of the outer trays base varies to create a vertex and angle that is similar to the temporomandibular joint. The intraoral orthosis device has two bite trays, a maxillary bite tray and a mandibular bite tray. The bite trays are connected by arms, releasable fasteners, or a combination of the two. Accordingly, another aspect of the present invention is to provide a method to manufacture an intraoral orthosis device without the need of utilizing the skills of a technician or dentist.
