Customer ratings & reviews

I went with the thickest option. Love the customer service, process and the thicker material is still very comfortable (I was worried it wouldn't be). Sentinel does an outstanding job all around.

I was afraid these weren't going to work for me because the ones my dentist made for me were uncomfortable but these popped in and fit perfect. Comfortable and very high quality.

I'm a pretty hard grinder.. being that I've gone through a few night guards from my dentist which was getting really expensive. My husband did some research and he came across Sentinel and thought I should try them out. I was a little skeptical about taking my own impression at first but it ended up being pretty fun for my husband and I. We sent the impression back in a prepaid envelope. My nightguard came back in about 10 days and I was blown away with how well it looked and fit. I don't know why dentist charge so much seeing that companies like these don't have to. Getting ready to buy another as back up!

Thanks for the brighter smile Sentinel! A++++

Customer service is outstanding. I had a lot of questions and Alexandra was extremely knowledgeable, professional and kind. I got my night guard within two weeks of sending the impression off. Fit is excellent. I chose the 2mm because I wanted strength but wanted to keep it thin in my mouth since I'm a light sleeper. This company is very professional. Couldn't be more thrilled to have found you guys. Thank you!

I bought my night guard in June 2019 and found it to be a bit too tight in the front. I emailed them and they payed for shipping for it to be adjusted, then got it back to me is a very timely manner. The best part was that there were no questions asked! How refreshing, a company that honors its promises without attempting to scapegoat the customer! THEIR CUSTOMER SERVICE IS TOP-NOTCH and the product is great! Comfortable, effective and easy to use! Also, this is a family-owned business...all the more reason to purchase from them!! :-)

Can't go wrong with Sentinel. Great group of people that offer a solid night guard solution. I have paid the expensive dental price in the past but no more! The internet is here and there are better ways of doing things. Thank you Sentinel!

I rarely leave reviews or contact companies but I felt compelled to reach out and give my thanks. I'm on my 3rd nightguard from your company and I couldn't be happier. My dentist had been telling me for years that I was grinding and needed a nightguard. Like thousands of other Americans I promptly ignored him until I chipped a tiny bit off a molar due to grinding and realized I needed to get serious about this. I balked at the 500$ price my dentist wanted. I tried a store bought night guard which I carefully molded with boiling water per the instructions and then promptly threw in the trash after gagging on it all night. Then I found you guys and for a fraction of the dentist's price I received a custom molded night guard. The process was easy, the fit was great and now I can't sleep without the night-guard in...I feel naked without it. My morning headaches and jaw pain are nearly gone and I couldn't be happier. Keep on keeping on!

Thank you Sentinel! Guard fits great and I'm completely happy with the service.

Excellent product. Works exactly as advertised. I can breath easier, drink and even speak clearly. But even better is that it took us 3 attempts to mold the impression correctly and each time, Sentinel was patient with us and helped us until we got it right. Remarkable product. And let me add that my wife and I have had many of these from the dentist over the years. These are just as durable.