**14. Palate lifting appliances (PLA)**

They are used in patients who have a thick and enlarged soft palate. The appliance supports and stabilizes the soft palate, prevents soft palate blocking the airway, and reduces the vibration of soft palate leading to snoring. But they are uncomfortable appliances and the patient compliance rates are very low. Because of this reason, they are not frequently used in OSA treatment [10, 11].
