Mouth taping for dry mouth, CPAP and snoring is my topic on this Primal Diet - Modern Health podcast with Nicholas Michalak. I don't use a CPAP machine and I don't mouth breathe during the day but I learned years ago I was mouth breathing at night. I've been taping my mouth at night ever since. Try mouth taping for dry mouth, CPAP and snoring. Having your lips stay gently closed will make a difference in CPAP use and dental health.
Ash