If you struggle with mouth breathing or dry mouth while using continuous positive airway pressure cpap therapy for sleep apnea keep in mind that there are several things you can do that will help discover how to avoid mouth breathing by opening the nose using a chinstrap and adjusting device settings. Mouth breathing in newly diagnosed sleep apnea patients is so prevalent that many sleep doctors start all of their patients on cpap therapy with a full face mask. Cpap Nightstand Plans For A Cpap Device Cpap Nightstand Cpap Mask If the mouth breathing is at night it could be related to sleep apnea. Sleep apnea mouth breather . Temporary mouth breathing is not cause for alarm but in cases where mouth breathing is chronic and regular it can have negative effects. For mouth breathers an opening that provides adequate airflow is necessary and the sleeptight has the largest opening that i have seen in a mouthpiece. Obstructive sleep apnea osa is a sleep disorder that causes your breathing ...