Whitnel
Gold Member
I haven't tried one of those devices, but was wondering what happens if your mouth comes open when you're asleep, do you have to wear a chinstrap with those?
I used the chin strap and that helped but the pressure still blew my lips open. I have a bad case so the pressure on the machine was set pretty high. The full mask that covered my mouth and nose was what worked best. The make several different full masks. It had a piece that wend under my chin and helped keep everythign in place.