Customer ratings & reviews

The guard is exactly as described. Fit is good. Very satisfied.

Love it

I have had several mouth guards in the past and I have to say this is the best one I have ever had. It snaps into place and is a perfect fit. It is so comfortable that I don't even know I'm wearing it. I was able to get in on the 30% off sale and that made it very affordable. Sure beats the high cost from my dentist. I will definitely use this company again and would recommend highly.

Best ever

I love this mouth guard. It is a billion times better than the over the counter versions. It is so light and barely noticeable. I have used the other style for years. I will never go back!

This product was far cheaper than if i bought it from the dentist and was well mads. The no show aspect is a bonus. Fit was tight but felt better after a few days. Would recommend to a friend

Amazing product

Works exactly as described in even better and it's much cheaper than other sanitizers of mouthguards

Great product and an even better price. Awesome customer service as well.

Third purchase and I love them

I ordered a lower guard since I usually have only tried upper, and I really like how it allows my tongue to sit flush on the roof of my mouth. Zero complaints as this is the third time I have ordered a guard from Sentinel. I also tell my friends and family to order from here-the allergy free is formulation is what keeps me ordering.

Outstanding Services

I have purchased a lower teeth, hard night guard in 2023. It was a perfect fit for my teeth. In October 2025, I bought another upper teeth night guard. For some reason, the upper teeth night guard did not fit well with my teeth. They offered me another night guard for free. They wanted to make sure I could make a correct impression for a custom night guard. They helped me go through many times of impression-making. On Christmas Eve, 12-24-2025. I got my perfect fit night guard. This is a wonderful Christmas gift. Thank you, Sentinel Night Guard.

Great fit

First impression and the fit is great. Happy to be proactive in protecting my teeth.

Your guards are the only ones I've owned that last longer than 8-10 months

I have worn a bite guard for 20+ years, and until I found Sentinel a few years ago, I was literally eating night guards. Mine had to be replaced twice a year at least because my grinding is so bad they just fell apart. My Sentinel guards are 3 mm, and hard, and I have not need a new one more than every two years. The only reason I replaced my last one was because I felt after two years it was probably time. It was still in good shape. AND, they are less than half the cost of what my dentists were charging me. Thank you Sentinel! I'm so glad I found you.