Tongue and Cheek Biting Relief Mouth Guards · For tongue and cheek biters
For the biter who wakes up with a sore mouth.
Custom-fitted 1.5mm soft guards for both upper and lower arches — a protective barrier between your teeth and soft tissue so your mouth can stop getting hurt and start healing.
Right for you if
- You wake up with sore, bitten cheeks or a tender tongue
- You bite your cheeks or tongue during sleep or involuntarily during the day
- You need protection on both arches — this order includes upper and lower guards
vs. $650 dentist
Not sure this is right? Take the 2-minute quiz
What makes this guard right
Both upper and lower guards included
Unlike night guards which protect a single arch, this order includes custom-fitted guards for both upper and lower. Full coverage means no gap for accidental biting regardless of which teeth are involved.
Soft 1.5mm material for comfort and healing
The soft material creates a cushioned barrier without adding bulk or pressure against already-irritated tissue. Thin enough to wear comfortably while existing soreness heals.
Custom-molded to your exact anatomy
A snug fit that stays in place during movement and throughout sleep — important for a product protecting soft tissue rather than just sitting over teeth.
What happens after you order
Place your order & email your scan
Choose your guard and check out. Then email the STL or PLY file from your dentist to info@sentinelmouthguards.com — we’ll confirm receipt and start manufacturing.
We finish your guard by hand
Your guard goes straight to manufacturing — no impression kit, no waiting. Our technicians hand-trim and polish it to the exact contour of your bite.
Protection arrives
Ships free with care instructions and a guard case to keep it safe between nights.
Right for you if
- You wake up with sore, bitten cheeks or a tender tongue
- You bite your cheeks or tongue during sleep or involuntarily during the day
- You need protection on both arches — this order includes upper and lower guards
vs. $650 dentist
Not sure this is right? Take the 2-minute quiz
Tongue and Cheek Biting Relief Mouth Guards
$174.25What's not in your guard
We use only dental-grade, FDA-compliant materials. Here's what you'll never find in a Sentinel guard.
Same material standards as your dentist
Sentinel's lab is FDA registered. Our finishing process meets the same standards your dentist's lab is held to — because we are one.
No leaching substances
You wear your guard 6–8 hours a night. Leaching is real — it happens when plasticisers migrate out of the material into your body. Every Sentinel material is selected specifically because it does not leach.
Not just BPA free — BPS free too
Many 'BPA free' products substitute BPA with BPS, which researchers believe may be equally harmful. Sentinel is free of both — and every other bisphenol compound.
Every guard is hand-finished in the USA by our dental technicians. No outsourcing. No exceptions.
The Sentinel Promise
The finishing process is what makes us confident enough to promise this. A guard that's hand-trimmed to your exact bite fits. And a guard that fits doesn't need a guarantee — but we offer one anyway.
100-Night Outcome Guarantee
Sleep on it for 100 nights. If you're not waking up better, return it. A $23 fee covers shipping and materials — everything else is refunded.
Three Attempts to Get It Right
Adjustments, remakes, and one complimentary redo impression kit in any combination. If the fit still isn't right after three attempts, we'll issue a refund minus a $23 fee to cover shipping and impression kit costs. Covered within your 100-night guarantee window.
1-Year Craftsmanship Warranty
Every guard is covered for one year against defects in materials and workmanship. We stand behind what we make.
Real Humans, Real Help
Talk to our dental technicians directly. No scripts, no runaround just expertise.
Customer Reviews
Barb Perslin
Verified Buyer
Tongue and Cheek Biting Relief Mouth Guards
David Day
Verified Buyer
They fit perfectly and stopped 100% of the tongue and cheek biting I was experiencing. Thank you so much.
Lynnette Greer
Verified Buyer
Since using these I no longer have cheek biting sores like I did with my other upper dental splint. The Mouthguards are so comfortable too - sometimes I forget I’m wearing. Money well spent! Thank you sentinel! I wish there was somewhere in Australia that did something like these.
Melissa Greenberg
Verified Buyer
Best night guards ever.It has helped me to stop biting my tongue and cheeks. Soft and very comfortable.Thank you.
Gregory Hoover
Verified Buyer
The Tongue & Cheek Biting Relief Mouthguards are working flawlessly. Not a single biting episode since the very first night of wear. Took 1 night to get adjusted to the wearing of your guards. I should have purchased your mouthguards a longtime ago. I could have spared myself a lot of misery. Thanks for a superior product. Keep up the good work. 6 stars
Kim Morrissey
Verified Buyer
Tongue and Cheek Biting Relief Mouth Guards
Grace Gruver
Verified Buyer
I was inadvertently biting the inside of my mouth, particularly when I slept, and the action/pain would awaken me. When I began using the Sentinel mouthguard all the accidental biting stopped and provided welcome relief. Thank you for your product and I highly recommend it.
Mckenna Jones
Verified Buyer
I was biting my tongue and it created such a painful sore. I went to my dentist and he referred me to this product. Job well done! He helped me with my impressions so that was a breeze. The guards were made well with obvious care and they're working! A++++ Excellent job!!
Rosalyn T.
Verified Buyer
High quality and great customer service! The quality of these guards is better than anything I've ever received from the dentist. Easy process to take the teeth impressions and the delivery was FAST! I highly recommend!
Sophia Davis
Verified Buyer
I wasn't sure how this would work but my cheek biting problem had gotten so severe that I could barely stand to eat or drink anything. Painful is an understatement. I checked with my dentist first and he had never heard of these. Hesitant, I went forward with my purchase. The impression molds were easier than expected. I sent them in and received my custom cheek biting guards within about 7 days. They fit like a glove and more importantly they work!! My teeth cannot do damage to my cheek area and after months of being in excruciating pain, my area is healed. I highly recommend to anyone with my problem. I don't think there's anything else like this on the market.