Customer ratings & reviews

For years I've smoked cigarettes and I finally stopped. I thought I'd never be able to get whiter teeth but this stuff works. It took me about 7 consecutive nights to see a real improvement but what an improvement. Now anytime I need to touch up my teeth I just whiten for a couple of days & that's all it takes. My wife is pleased with the results as well. Thanks a bunch.

MIX FAST! I mixed my putty too slow and the putty hardened before I was ready. I contacted the sentinel team and they sent me new putty. 2nd time around went much better but mix quickly because the putty will harden and you will not be able to get your teeth into it! End product fit great. I've been wearing it nightly and have seen a significant reduction in my jaw pain and morning headaches.

When my dentist said he'd give me a deal on my second night guard I was stil heartbroken at the price. So thankful for the internet. Also, pro tip: I use castile soap to clean my mouthguard. Dr. Bronners on Amazon sells a big bottle of it. Better than the harsh toothpastes and denture cleaning solutions! Mouthguard fits perfectly . A+++

I love my new guard! Thank you!

I have an unusual dental anatomy and feared the dental guard would not fit correctly. These guys are true professionals. They somehow managed to make a great fitting guard for me and I couldn't be more satisfied. I have had dental guards made by other online companies and none of them fit. I did have to take my dental impression twice. The first time, it was rejected. They said they needed a better impression and gave me a redo kit for free. I spoke with a lady on the phone who was very helpful in giving me some tips for a better impression. The guard came within a week 1/2 of sending off the impression. It does take a little bit of time to get used to but stick with it. It will become comfortable after a few days or so.

Love love love! Took a couple of days to break them in but now I'm wearing them all the time. I talk with them in during the day. Totally worth it for me.

Oh man what a deal! One night guard at my dental office is $650. I can get two for less than $200 here. Shall we say awesome??

I have a horrible case of bruxism (night teeth grinding) and bought this to help me because most products store bought ones are so thick they trigger my gag reflex. Because of the slim size and unique material of this night guard, it has been helping me finally get a good nights' sleep.This is different than most other ones I've tried. Thanks!

I've continued to wear my night guard regularly and though it does take some getting used to, I have gotten used to it. The fit is spot on. No need for any adjustments. Ordering for my wife and daughter soon.

When something is good, you stick with it. This is my 3rd order from you guys. I've been grinding my teeth since I was little and this holds up better than any of the ones my dentist made. Thank you for an outstanding product.