Yes. Studies indicate that OSA is most severe during the early morning hours. It is , therefore, very important for you to use the appliance at all times during sleep. During the first few weeks while you are adjusting to the appliance, it may be necessary to start with shorter periods and gradually increase the length of time until you can comfortably wear the appliance all night. Many patients are able to wear the oral appliance on the first night and experience no discomfort.

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