An appliance and methods are described that include embodiments of a mandibular advancement or positioning device which can use elastic bands to pull the jaw forward. The appliance has an upper plastic tray conforming to the patient's upper teeth and including a set of retention hooks coupled to the upper plastic tray via being encased in plastic, one on the right and one on the left anterior buccal portion of an upper plastic base. The appliance also has a lower plastic tray conforming to the patient's lower teeth and has a set of bite pads integrated with a second set of plastic retention hooks encased in plastic extending outwardly from the teeth. The appliance includes the upper and lower plastic trays and specially formed elastic bands of a plurality of lengths and strengths replaceably attached to the retention hooks on both sides of the trays to pull the mandible forward for treatment.