VitalSleep's teeth impressions help keep the mouthpiece in the secure. It will take a few days for a new user to get accustomed to sleeping with a mouthpiece. If a user's mouth opens wide during sleep, any mouthpiece can come out. We can provide you with a free chin strap to help keep your mouth closed. Contact us at support@vitalsleep.com to request one.
What if my mouthpiece comes out of my mouth during sleep?
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