An anti-snoring and sleep apnea device is disclosed which comprises a maxillary tray adapted for receiving upper teeth, the maxillary tray having a pair of shoulder structures with each of the shoulder structures having an adjustable expansion device and a movable boss member connected to the expansion device, with adjustment of each expansion device for moving each boss member away from each shoulder structure, the maxillary tray also having a polymer compound therein, and a mandibular tray adapted for receiving lower teeth, the mandibular tray having a pair of upstanding structural fins, each of the fins being adjacent to each of the boss members, with adjustment of each expansion device for moving the mandibular tray forward of the maxillary tray, the mandibular tray also having a polymer compound therein.
