Oral devices (also called oral appliances) are sometimes used to treat obstructive
sleep apnea (OSA). They push the tongue and jaw
forward, which makes the airway larger and improves airflow. This also
reduces the chance that tissue will collapse and narrow the airway when you
breathe in. Examples include a
mandibular repositioning device (MRD) or a tongue-retaining device.
Oral breathing devices are sometimes a reasonable alternative to
continuous positive airway pressure (CPAP). Although
oral breathing devices generally do not work as well as CPAP, they may be
considered for people who:1
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