Customer ratings & reviews

I had been looking for something like this for quite a while. I clench my teeth so badly at work but I have to talk and smile during the day and didn't want to wear anything that people can see. I chose the 1mm and it's perfect! Thin and stays in place. Thank you!

Great service and great product! I replaced my retainers after my dog chewed up my old set. The old set cost me $450 from my orthodontist. The process was easy. The material feels very similar to my old ones. Maybe a little thinner? The scalloped top is different than my old ones. They were cut straight across but these do seem to fit better. Product is as advertised in the pictures. Would recommend!

Great product! Great service! I totally recommend Sentinel!!

I have been having serious grinding issues since being locked at home- my teeth and surrounding areas including my jaw were in real pain every single day. My jaw would painfully pop when I ate anything or dared to open my mouth too wide- I was miserable. Bought way too many over the counter guards with minimal results. First use of the Sentinel guard and immediately noticed less pain- the very first night. I've stuck with it and all of my symptoms are near gone. This product works! I won't be going back to Walgreens. I'm sticking with quality.

Great product. Great customer service. Loved the way it fit. Really good!

Easy to use teeth whitening! I pop them in and watch tv. I had whiter teeth in 2 days.

Wasn't to sure about doing this online but the cost difference between my dentist and going online was worth it to find out for me. This worked great! I'm very impressed with Sentinel, they were quick and affordable. Thanks!

I get bad headaches during the day from clenching my teeth. Been wearing the no show day guard for a week now. I wear it at work, at home, at the gym. So far it's an excellent product! I forget I have it in and no one is the wiser! A+++ Thank you! -Chasity Freeman

I just got these and right away they fit perfectly! It looks perfect for protecting my teeth and they don't feel like they will slip out at night. I will try them out and update if they actually work.

I like the Sentinel brand. I already have a night guard and I have referred my family to them over the years. The retainer is high quality and fits better than my old one. Mouth guard case could be higher quality but they did send me an extra one for free when mine broke.