Sentinel Mouthguards
Sentinel Mouthguards is a Florida dental lab selling custom night guards, day guards, sports mouthguards and clear retainers made from home impression kits or dentist scans.
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Sentinel Mouthguards Black Friday 2026
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About Sentinel Mouthguards
Sentinel Mouthguards is a mail-order dental lab registered in Florida as Sentinel Mouthguards, LLC, with its office in St. Petersburg. Its founder, Ashley, also works as the lab's lead dental technician. Customers order online, take a bite impression with a home kit or email a scan from their dentist, and receive a guard that technicians trim and polish by hand.
What Sentinel Mouthguards sells
- Night guards for teeth grinding, led by the Hybrid Guard
- The No-Show Day Guard for people who clench during the day
- Soft guards for tongue and cheek biting, and custom sports mouthguards
- Clear dental retainers for keeping orthodontic results, and custom teeth whitening trays
- An ultrasonic cleaner with a UV light sterilizer, and spare impression kits
Sentinel says its guards use BPA-free, BPS-free and latex-free materials and are finished in its own US facility rather than an overseas lab. The company keeps each customer's impression model on file, so a replacement can be made later without a new kit. Shoppers who already have a digital scan can email an STL or PLY file after checkout instead of using the kit.
Delivery and returns
Standard shipping is free to the lower 48 states, and Hawaii, Alaska and Puerto Rico pay $20. Impression kits leave the same or the next business day, lab work takes 3 to 7 business days, and each leg in the mail takes 2 to 5 business days. Express service costs $80 and buys a 2-day lab turnaround. Sentinel has stopped shipping outside the US, citing higher import fees.
Every guard comes with a 100-night guarantee: within 100 nights of receiving it, a customer can ask for free adjustments, a remake or an exchange, with up to three attempts at the fit. A refund in that window keeps back a $23 fee for shipping and the impression kit, and an order that has already been exchanged can no longer be refunded. A 1-year craftsmanship warranty covers defects, cut to six months for the Comfort Guard. Return labels are requested by email.
Sentinel Mouthguards FAQs
How much does Sentinel Mouthguards charge for shipping?
Standard shipping from Sentinel Mouthguards is free to the lower 48 states, while Hawaii, Alaska and Puerto Rico pay $20. Express service costs $80 and adds a 2-day lab turnaround; standard lab work takes 3 to 7 business days.
What is the Sentinel Mouthguards 100-night guarantee?
Sentinel Mouthguards allows free adjustments, a remake or an exchange within 100 nights of receiving a guard, with up to three attempts at the fit. A refund in that period is paid minus a $23 fee for shipping and the impression kit.
Does Sentinel Mouthguards ship outside the United States?
No. The Sentinel Mouthguards shipping policy says the lab has stopped shipping internationally because of increased import fees. Orders go only to US addresses, with Hawaii, Alaska and Puerto Rico charged $20 for standard shipping.
Who runs Sentinel Mouthguards and where is it based?
Sentinel Mouthguards is a Florida limited liability company based in St. Petersburg, according to the state business register. Its founder, Ashley, is also the lab's lead dental technician, and guards are finished in the company's own US facility.
Can Sentinel Mouthguards make a guard from a dentist's digital scan?
Yes. Sentinel Mouthguards accepts an STL or PLY scan file from a dentist, emailed after checkout, in place of the home impression kit. The order then goes straight to manufacturing without waiting for a kit to travel both ways.
What warranty comes with a Sentinel Mouthguards guard?
Sentinel Mouthguards covers each guard for one year against defects in materials and workmanship, apart from the Comfort Guard, which is covered for six months. The lab also keeps impressions on file for future replacements.
How do shoppers contact Sentinel Mouthguards?
Sentinel Mouthguards handles orders, scan files and return-label requests by email at [email protected]. Its homepage says customers can talk directly with the lab's dental technicians rather than a scripted support desk.