Customer ratings & reviews

I purchased a hard acrylic mouthguard from Sentinel in 2015 and it still looks great. It fits better than a previous one that a dentist gave me. I sincerely recommend this company for their excellent service and for their low costs. Thank you, Sentinel!

Got this for my wife. She loves it. Says her tension headaches are not there anymore. Took some initial getting used to but she adapted and loves it. 5 stars!!!

I love my mouthguard from Sentinel. It is very comfortable, and I can't sleep without it. I like that you can choose the thickness as well. It's super convenient that they hold onto the mold so I can reorder when needed without having to make a new mold (although it is a very simple process to make the mold). I highly recommend Sentinel mouth guards.

I've been using Sentinel night guards for several years now. Their quality night guards have helped reduce wear on both my enamel and my expensive veneers. In fact, I've had no breakage whatsoever since using their product. But the best part of Sentinel is their customer service. Any time I've had a question or a concern, they have been super quick to respond and remedy the issue. The warranty period on their products is very important to me. And any time I've worn through a night guard that is still within the warranty period, Sentinel has replaced it free of charge. I plan to have more dental work done in the near future, and without question I will be placing a new order through Sentinel.

I am downright STUNNED at how well this night guard fits. Buying a night guard is typically a recipe of sadness for me when ordering online, but I took a chance. It is AMAZING. It is a nice thickness and the teeth do not feel constrained. The guard is a little bendy which is nice and the look of it is exactly what is pictured in the product images. I love that this is BPA free too. The inside part is soft and the hard outer lining feels good. It looks and feels outstanding. The only concern I have is that when cleaning I noticed the two layers are visible. I can see where the soft meets the hard and I wonder if this may be prone to separating. I contacted the company and they said this is solved by being sure to keep the guard completely dry between uses and store in the dental case provided. So far so good. I might eventually buy another as a backup but for now, I am left 100% satisfied and amazed at the overall experience.

I've had my guard for a couple of years and it still works for me.... I am a HEAVY grinder!!! Super comfortable, has held it's shape perfectly, perfect fit. I will be ordering another one soon, just because I want to have a back up. Amazing product, for real. Incredible price, incredible product.

Excellent value. Fitting was easy. Just follow the instructions. The night guard arrived promptly and fit perfectly. Took a few nights to get used to wearing it, but now it's the first thing I look for when I go to bed. I purchased a second one to use for traveling.

Easy fitting process and very comfortable to wear. Sentinel's delivery was a little late, although the Company sent me two soft night guards for the price of one. Would definitely purchase again and recommend to my friends and relatives.

This is by far the best mouth guard I’ve ever owned! I bought one from my dentist last for 3 times the price and 1/2 the quality of Sentinel mouth guard! It lasted less than 6 months. I like to use the product I buy before I leave a review and I have used this one! Every night for the last 2 years and occasionally during the day if I’m grinding my teeth due to stress. I have the dual guard that is just starting to show enough wear that I need to replace it. I will never use any other mouth! Sentinel is the best!

This is by far the best mouth guard I’ve ever owned! I bought one from my dentist last for 3 times the price and 1/2 the quality of Sentinel mouth guard! It lasted less than 6 months. I like to use the product I buy before I leave a review and I have used this one! Every night for the last 2 years and occasionally during the day if I’m grinding my teeth due to stress. I have the dual guard that is just starting to show enough wear that I need to replace it. I will never use any other mouthguard! Sentinel is the best!