Customer ratings & reviews

I was a little nervous when I ordered this because similar mouth guards have been uncomfortable, but I thought I would give it a try...what a pleasant surprise they are super comfortable! I ordered both a day guard and this heavy duty one. I love them and would definitely recommend.

My dog got a hold of my $500 night guard custom fitted by my dentist. The mouth guard did help my constant cheek biting but the set works even better and at a fraction of the price! Unbelievable. At first I thought they were too thin but they're comfortable to sleep in all night long, and still provides the protection I need from really bad cheek biting issues.

This is one of the best teeth whitening products I've used. I've tried everything including one of those mall kiosk "teeth bleaching" set ups which didn't work at all. This actually does. Love it!

High quality and beautifully crafted, the 3mm hard guard exceeded my expectations. I especially like that they don't cut the material straight across. The guard is low profile (it doesn't extend up over the teeth). I find it comfortable, and the teeth impression process was not too difficult to get done, but i can see that an older person may have trouble because you do have to mix the putty fast and work quickly.

I’m extremely pleased to discover this website. I wanted to thank you for ones time just for this fantastic read!! I absolutely enjoyed every part of it and i also have you bookmarked to see new stuff in your site.

Been ordering mouth guards from Sentinel since 2013. They have always put the customer first and their product is great. Consistent, good service. You guys have a customer for life.

Hands down, the best night guard out there. I've used so so many.. I notice a difference in my teeth/jaw if I miss even one day. I have contacted the company with inquiries, and the customer service reps have always gotten back to me with great response. *****

This mouth guard is great. I sometimes use it during the day when I feel a headache coming on. I know I clench my teeth during the day too. Then I just make sure to clean it and put it by my bedside for night use. Cleans very nicely and easy to store. It doesn't look cheap. This is a really good price for a high quality mouth guard.

Wonderful results! My dentist doesn't offer deals like this! Lucky to have found you Sentinel!

My dentist sells this SAME EXACT KIT for $400. Same gel, trays everything. So glad I found it on here. My teeth get so white so quickly with this stuff. Thank you for making this affordable!