Abstract: An oral device for holding the tongue pressed against the roof of the mouth, thereby promoting suction closing the lips and encouraging breathing through the nose. The device has a U-shaped front wall extending along the exterior surface of the user's upper and lower teeth, and a tongue supporting platform projecting horizontally and rearwardly from the front wall. The tongue supporting platform is located substantially midway between the top and bottom surfaces of the front wall. In one embodiment, the tongue supporting platform is continuous along the interior surface of the front wall. In another embodiment, the tongue supporting platform is discontinuous, having a right side section and a left side section, and being absent at the center of the front wall. In still another embodiment, the oral device has a forwardly projecting handle.

Abstract: An oral device for holding the tongue pressed against the roof of the mouth, thereby promoting suction closing the lips and encouraging breathing through the nose. The device has a U-shaped channel for engaging the upper teeth of the user, the channel comprising a vertical wall. A platform protects horizontally and inwardly from the U-shaped channel. This platform is located at the level of the bottom surfaces of the upper teeth, and supports the tongue. The platform bears concave indentations molded to conform to individual teeth of the user. The platform has a nominally flat bottom surface, at least one drainage hole enabling saliva to pass to the bottom of the mouth, and a slot opening to the rear of the device.

Abstract: An oral device for holding the tongue pressed against the roof of the mouth, thereby promoting suction closing the lips and encouraging breathing through the nose. The device has upper and lower U-shaped channels for engaging the upper and lower teeth of the user. The channels each include a vertical wall and indentations configured to receive the teeth in close cooperation. The lower tooth engaging member includes a vertical wall located inside the teeth which completes front and rear surrounding of the teeth, to hold the device in proper position. A planar platform projects horizontally and rearwardly from the U-shaped channels. This platform is located at the level of the bottom surfaces of the upper teeth, and supports the tongue. The platform has a relief configured to enable the tongue to pass comfortably over the rear surface of the platform when coming to rest thereon.