The ResMed chin strap keeps the mouth closed when you are using a nasal or nasal pillow mask for CPAP therapy. The pressure delivered from your sleep apnea therapy device can cause the mouth to open, especially if you are prescribed a higher setting.

Air leaks severely reduce the effects of your prescribed CPAP therapy, causing you to wake up with a dry mouth, feeling tired, and needing more rest. Other options to consider for eliminating mouth breathing would be to try a full-face-style CPAP mask that covers the nose and the mouth. Waking with mouth dryness can be an indicator that your mouth is falling open during sleep.