Customer ratings & reviews

Hi Sentinel folks! I got my mouth guard and the fit is perfect. Thank you for sending the extra kit when I messed up my dental impression. Great, fast customer service, great product.

THIS WAS AT MY DENTAL OFFICE FOR $400! Once upon a time I paid $400 for this same set at my dental office. I'm amazed at the dental office markup. Thank you for offering high quality products at an affordable price. By the way, to anyone considering this, it's by far the best teeth whitening gel in existence. Great for sensitive teeth like mine and it gets my teeth so white. I also love that I can whiten anytime I need (months apart) because it's not a one and done system. A++

Perfect fit. You guys aced it. I was hesitant to take my own teeth impression but the process was easier than expected. I love my night guard and you've earned yourself a new fan. Nice job!

I originally ordered the soft guard but my teeth grinding is a little more intense than I thought it was. I saw wear marks on the soft one within the first month of use. Contacted Sentinel and they suggested a more durable type. After some back and forth, I decided to give the hard guard a try. Really impressed with the quality and fit. It's thin but offers the protection that I needed. I can sleep with it in easily and I'm even getting to where I prefer to sleep with it. Never thought I'd say that! If you're considering ordering a custom night guard online vs the dentist, this is the company. Fantastic work all around! A+++++++

My dentist has been telling my I grind my teeth and I finally did something about it. I ordered a night guard and a day guard. Both fit perfect and I particularly love the comfort of this day guard. Taking the impressions was a bit of a challenge for me, I had to redo them but they provide free materials so no problem. I also want to mention Sentinel's excellent customer service. Very friendly and helpful! I highly recommend~~

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.