Customer ratings & reviews

Works perfect!! I have had night guard from other online companies and the fit was never right. Received my Sentinel guard and have been using it for several nights. I love this one. Best night guard I've ever owned! Fit is perfect, quality is high and the process was FAST! A++++

This works!! Excellent product to stop tongue biting. My tongue is finally healed and pain-free! Thank you!

Better than my dentist's guard! The process was easy, customer service was great and when I messed up my impression (and used the extra putty they provided), they still sent me another kit for free! I got the medium thick guard for moderate teeth grinding and my teeth feel protected, Very comfortable, well-made night guard!

I've been using Sentinel dental retainers for the past few months and I'm really happy with the results. They're practically invisible and comfortable to wear. I can go about my day with confidence knowing my teeth not shifting.

Love this company!! I have ordered 2 guards from Sentinel plus a teeth whitening kit. Everything I've received has fit perfectly, it's high quality and the service is fast and friendly. Sentinel has my business for years to come. Thank you for doing things right!

I'm so glad I found Sentinel Mouthguards! The guards are made from high-quality materials and the company has a great warranty and return policy. I've recommended these guards to all my friends and family who suffer from tongue or cheek biting.

Great night guard! Exactly what I wanted. Fast and easy process. The fit is great! I'm very happy with my purchase.

Love the flexible, soft material. The cushioning feels good in my mouth and the fit is spot on. I was skeptical about ordering because I just can't stand anything in my mouth but I can definitely tolerate this! Thank you Sentinel! You have won yourself a fan from Wisconsin!

I live in the city and my orthodontist charges $500 for a replacement set of dental retainers! This is a cost-effective way to save and the quality is even better than I had anticipated! Comes with a mouth guard case for storage. Nice job Sentinel!

The hard option is where it's at! I tried the soft type first and found that it was too flexible for my liking. Switched to the hard guard (they allow you to switch types if you're not satisfied) and this is EVERYTHING! My tension headaches are gone and I love how comfortable it is. I only had to pay the cost to upgrade ($20). Fast, affordable and the fit is fantastic!