The Sentinel Promise: Perfect fit or we remake it free.
Will dental insurance cover a night guard? Usually only when a dentist bills it. Sentinel doesn’t bill insurance—use FSA/HSA with our itemized receipt (LMN if asked).
Waking with a sore or nicked tongue? You’re not alone. This pillar guide explains why you’re biting your tongue in your sleep—from bruxism and airway issues to stress and medications—and exactly how to stop it. Get quick relief for active sores, proven prevention tips, and guidance on when to see a pro. We also compare guard options (including our Tongue & Cheek Biting Relief Guard) so you can sleep comfortably and protect your mouth.