My wife (oral surgeon) says the only real solution to sleep apnea is surgery. CPAP machines to her and bunk. I believe she moves the jaw forward to help open up the airway. Whatever works I guess.
Some dentists (like mine) offer a removable orthotic [0] that you wear during sleep which accomplishes the required jaw movement and improves sleep quality. It's an alternative to treatment with CPAP that doesn't require anything invasive like surgery.
I haven't undergone this particular treatment myself, but I know from wearing other styles of precisely designed orthotics (both removable and semi-permanent) that they can improve the quality of your breathing, and thus improve the quality of your sleep.