An appropriately-designed dental appliance can improve sleep apnea by allowing your jaw to move in an upward direction. Aside from providing a better sleeping environment, this can also reduce snoring as it prevents the tongue from sliding back into the throat. Using an oral appliance to treat sleep apnea is not for the faint of heart. A well-fitted oral appliance requires patients to adhere to an appropriate wear schedule. Furthermore, it might require the help of a sleep specialist to determine the best jaw position.