Why are full masks ordered and not the nose mask? I was ordered to have the nose mask and my brother the full face mask. When I was using my machine I would have to remind myself of keeping my mouth shut. I didn't know just how much I breathed out of my mouth until then. I was told that I needed to keep my mouth shut or I would get a lot of gas and have a stomach ache. I hated using the mask because I would wake up with my mouth open.
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