According to one embodiment, a universal oral appliance is provided. The universal oral appliance comprises an arched frame configured to be positioned proximate to the occlusal surface of a user's dental arch such that the arched frame extends beyond the cuspids of the user's dental arch when the arched frame is inserted in the user's mouth. The arched frame comprises a universal coupler configured to removably engage a dental attachment. The universal coupler comprises a substantially planar surface proximate to and extending across the midline of the arched frame. The universal coupler further comprises a first rail coupled to a first end of the substantially planar surface, and a second rail coupled to a second end of the substantially planar surface. The first rail, second rail, and substantially planar surface form a slot.