Customer ratings & reviews

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!

Buy it today! Fits perfectly, comfortable and allows me to communicate with my team. Easy setup to take your dental impression. Comfortable and protective. Way better than the $20 boil and bites. Thank you!

The only dental retainers I can actually wear! I originally purchased these on Amazon 2 years ago and was so impressed. I'm scared about my teeth shifting back so I continue to wear dental retainers at night just in case. I just purchased my second set after my dog tore my old ones apart. Again! These fit like a dream. When I got the ones from my dentist, I couldn't wear them. They dug into my gums so bad. But these snap on. They fit secure but they don't hurt. I have recommended Sentinel to all of my friends and family and will continue to do so. Thank you!

Hi-I received my night guard and I love it. I use it to keep from clenching down at night (I'm not a teeth grinder). I love it so much that I'm thinking of purchasing the daytime guard so that I can wear it during the day and save my night guard for just at night. Thank you so much for the wonderful product and friendly customer service!

BEST NIGHT GUARD EVER!! I have always hated wearing night guards but my teeth hurt so badly if I go any amount of time without wearing them. I have searched and tried many different types including the ones from the dentist, the cheapo ones from Walgreens and even the front bite ones. I was displeased with all of them. Then I found Sentinel. This soft guard is not big and bulky yet it feels protective and so comfortable. As long as I'm grinding my teeth, Sentinel will be my go-to.

Quality product! I was looking for something comparable to what my dentist was trying to sell me but without paying $600. I did my research and settled on Sentinel. What brought me to Sentinel after reviewing other online companies is their transparency in the materials that they use, they're a US based company and they've been making custom mouth guards for many years. I'm glad I trusted them to make my custom night guard. The care and attention to detail is magnificent! The fit is great. Process was easy. I couldn't be happier. If you're on the fence, choose Sentinel! You won't be disappointed!

I wish I'd bought a Sentinel guard years ago. I had been using the boil n bites and they were always too big for my mouth. I felt like I chewed on those more! This type is hard so I can't chew on it. It's so slim and comfortable. A world of difference for me. I will update this review to speak on the longevity but for now, a huge thank you!

I have been wearing night guards for 30 years and this is by far the most comfortable one I've ever worn. The fitting kit was easy enough to manage. Turnaround was quick! Amazing! Thank you so much.

Process was easy, fast and straight forward. Plus, I saved about $500, Couldn't be happier with Sentinel Mouthguards. I have already recommended this service to several friends and family members. Great experience!

I value good companies more than ever these days. When you call, someone picks up. Friendly, fast process. The delivery of both items (the impression kit and the custom night guard) were correct and on time. Free shipping too! I'm impressed!