A mouth appliance for maintaining effective airflow in a wearers airway comprises a frame formed to engage the wearers upper and lower teeth to retain the frame in a selected position in the wearers mouth in accord with the wearers natural bite. A tongue depressor is mounted to the frame and formed to extend to a rear portion of the wearers throat and exert pressure directly on the tongue in the area of the wearers soft palate, thereby facilitating comfort and ease in occasional swallowing, while providing airflow effectiveness to prevent the wearer from snoring and experiencing sleep apnea.