I've had a full beard or goatee with mustache for the entire ten years I've been on CPAP/BiPAP and have had little problem. There's a little leakage around the beard that I have to tighten the mask to reduce, but that's about it. I've tried lots of different masks, but always ended up settling on so...

I too have tried a dental appliance. It was miserably uncomfortable, left me with an achy jaw and didn't help much, if at all. According to much of the information I've read, your OSA is probably having a destructive (and possibly permanent) impact on your heart and arteries. To me it wouldn't be wo...