(09-05-2012, 07:01 PM)merhaba12 Wrote: I have struggled with various masks, mainly because I am trying to find out if I am a mouth breather and may need a full face mask. Currently, I use a nasal mask but I wake several times in the night with very dry mouth. I read that you can tape your mouth shut and that should take care of dry mouth. I use Biotene mouth wash and Biotene gel but they don't seem to work. By taping my mouth shut, shouldn't it keep me from getting dry mouth?
In the above paragraph you seem to be asking us if taping will keep your mouth from drying out. But in the title you seem to be stating that your mouth is dry even when you tape it.
There are muscles that lift the back of your tongue up against the roof of your mouth preventing air from escaping into your mouth. When these muscles fail at this task pressurized CPAP air escapes into your mouth inflating your cheeks and pushing your lips open.
I had to train myself to keep this from happening, and I was able to do it. However, my jaw drops when I fall asleep so I need the help of a chinstrap.
Not everyone is lucky enough to be able do this, and so they have to go with a full face mask. Some people are so lucky that they can do it without the aid of a chinstrap.
If your mouth is still drying out while taped shut my guess is that the pressurized air is still escaping into your mouth and that's what's drying it out. You can probably feel the air pushing out on your cheeks, like a balloon being blown up.
Taping is a foolish and irresponsible thing to do. You could suffocate. If you insist on taping at least use the chinup strips (google it). It leaves an opening for you to breathe. Chinup strips are marketed in the UK as a rememdy for snoring. I made my own once using three strips of tape joined in a "U" shape.
Like I said, I was lucky in that I could get the chinstrap to work for me. To train myself I practiced tucking the tip of my tongue up against the roof of my mouth, behind my front teeth. I even practiced doing it during the day.