A single-arch gradual mandibular advancement device comprising an elementattached to themaxillary teeth or mandibular teeth that is tailored to the user forcustomized retention. The single-arch device fits to a user's upper teeth or lower teeth. The single-archdevice also comprises aprotrusive wedge element, adapted to cause the lower mandible to slide forwardon occlusion,thereby opening the user's upper respiratory tract. The device prevents fullocclusion and maintainsa separation between the user's upper and lower posterior teeth for preventingclenching.
