Chin straps look deceivingly simple and straight forward. My experience with chin straps was difficult until I started questioning a few things. First, just getting your mouth to stay closed is not sufficient. You must get the tongue seal to work for you. The chin strap needs to help you to maintain that during sleep. Using a chinstrap that merely cups the chin did not work for me. It kept my mouth closed but did not prevent the mouth leakage (chipmunk cheeks).
I finally went with a 3" wide chinstrap with no chin cup and fitted it under my jaw from the chin to the neck. I needed a strap to go around the back of my head to keep it from coming off through the night. From the first night I tried this it corrected my problem enough that I no longer suffer dry mouth with my FFM. My feeling is that with this type of chin strap fitted in this manner the slight pressure on the soft fleshy area under the jaw helps to remind the tongue to stay up against the roof of the mouth. Anyway, that is my story and I am sticking to it.
As far as FFMs are concerned, they get an unnecessarily bad rap from some of the people who have tried them and can not get them to work. It could be the mask or could be the person. Who knows? The full face mask solved a lot of problems for me the majority of which were leaks. Yes you may have to work a little harder initially to tame the leaks and you may not be able to use any old FFM. I would recommend the F&P Simplus or the Resmed Mirage Quattro as being the most adjustable to different facial configurations. What works the best for me so far is the Mirage Quattro with the Simplus running a close second. The Mirage Quattro, once you get it set up properly and the head gear has slowed its permanent stretch can be just put on and you are good to go. No muss, no fuss, no having to adjust the fit every time that you put it on.
Try it or as the P10 cult (
) is fond of saying, "Resistance is futile".
finally got a chance to say that.