Customer ratings & reviews

I am a severe grinder and had an extensive amount of dental work to correct cracked and shortened teeth. I've even cracked crowns. I was a bit skeptical about Sentinel but figured it would save me a lot down the line since I average about a night guard every 18 months. My $650 custom night guard has hairline cracks all over after just one year. The process was thoroughly explained in the email and customer service has been excellent. It felt tight at first, but I've already gotten used to it after just 3 nights. Not only that I saved $$$, I don't have to go to the dentist's for fitting, which alone is a big hassle. I cannot be happier!

This product is fantastic! This is for any mouth pain including cheek and tongue biting. I sent back my impressions and the guards were shipped to me within a few days. Honest company with a great product!

Be careful when taking your impression. They're very particular about making sure the impression is perfect. I had to redo mine. They did not charge me for the new kit they had to send out. Very happy with my retainers. They're cut and shaped with care. They fit like a glove. Just be sure to read all the instructions and capture all of your teeth evenly. Otherwise you'll have to redo it.

The product fits great! I've slept with it for about a week now and so far so good. I do bite my cheeks a little but I'm mainly using these as teeth protectors for my grinding and clenching. I'm hoping they hold up over time because they are soft and a little flimsy.

Tip from a customer who learned the hard way! Don't bite down into the putty. Keep your mouth relaxed and press the putty filled tray into your teeth evenly. After 3 tries I finally got it right! The sentinel team was gracious and gave me two free kits. Best company ever! My mouth guard fits perfect and my jaw feels so much better. No more popping and clicking!

Great service which has saved us a lot of time. Very quick and good communication throughout. Thank you.

Drink coffee? Smoke? Like soda? Then you should use this stuff. I have bad habits but you can't tell since I got my own custom mouth tray. Shit is bad arse!

Can’t believe I’m writing a product review for my tongue biting problem. But here goes. This is the most comfortable mouth guard set I’ve ever worn ever. I am so impressed by this brand. The customer service was extremely helpful over the phone. The entire process was quick and easy and the mouth guards are a perfect fit. This is a wonderful product!

My daughter got a custom bite guard from a dentist before. He took a mold of her teeth just like this. As far as I can tell, the only difference was that it cost more to get the bite guard from the doctor. This product is working great. Prompt, hassle- free delivery.

So first of all, this was super easy to take the impressions. All you have to do is mix the putty, place it in the tray and then slide the tray into the mouth. Push the putty up into the teeth and wait. It will get hard and may feel tough to pull out. Don't panic. Just use more fingers to "pop" it off the teeth. A tip for putting the tray with putty into the mouth: have a timer on hand and stand in front of a mirror so you can see what you're doing. It took me two attempts. This may sound confusing, but make sense when you are assembling it. Okay! The actual guard itself! It has really nice material & the shaping is well done. One piece in the front was a bit loose, but otherwise feels great. I’ve never had real quality guards so I can’t really compare it, but it seems sturdy.. I guess time will tell. I do wish the guard was a different color (it's clear) because I just don't want to misplace it..Now, the biggest concern for me is the comfort and they got that right. 5 stars!