Custom Hard Night Guard


Custom Comfort, Unmatched Protection

Clenching or grinding your teeth can lead to a range of discomforts, including headaches, jaw pain, and increased teeth sensitivity. Moreover, this habit often results in the gradual deterioration of teeth, leading to wear, cracks, chips, and even breakage.

Made with the safest, durable materials available, our hard night guard provides maximum protection against teeth grinding and clenching, the #1 cause of dental pain and discomfort.

Guarding Your Grin and Your Green

Ask any dentist- nothing beats the joy of eating, laughing, talking, and chewing with your natural teeth. By choosing Sentinel Mouthguards, you not only ensure comfortable tooth protection but also save big on high dental costs, keeping your precious tooth structure and your budget intact.

Our Hard Night Guard is specially crafted to fit the unique contours of your teeth, providing a secure and snug fit that won’t slip or slide during the night. With its slim design, it’s the perfect balance of comfort and durability. Plus, it’s easy to clean and maintain, so you can enjoy long-lasting protection against teeth grinding without any hassle.

sentinel mouthguards smile

Since 2012, we have helped thousands of people just like you overcome their battle with teeth grinding and clenching. We’ve developed a simple and easy-to-use mold kit that allows you to create a mold of your teeth from the comfort of your own home. Once we receive your mold, we’ll create a mouth guard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.

Experience the difference in just three simple steps:

3 easy steps to receive your custom night guard

At Sentinel Mouthguards, our goal is simple: giving you top-notch products and amazing service. Count on us to be your partner in oral health, so you can enjoy nights of peaceful sleep without any discomfort. Start your journey to a better night’s sleep now!

  • Relieves jaw pain, teeth pain, headaches, tooth sensitivity
  • Protects teeth from breakage, cracking. Protects veneers and restorative dental work
  • Combats pain or tenderness of TMJ
  • Made in the USA! Learn more about material safety here
  • Custom fit to your dental anatomy
  • Non-flexible. Snaps into place for a perfect fit.
  • Easy dental impression kit + extra putty if reattempt if needed
  • 30 day money back guarantee + 1 year replacement warranty if you crack or wear down your guard!
  • Free retainer case
  • FREE SHIPPING IN US (international customers are responsible for shipping on return mailer only)

Not sure whether to choose an upper or lower night guard? Get expert guidance here


Product Description

Rise and Shine with a Grin or Your Money Back

Nestled in the heart of sunny St. Petersburg, Florida, we’re masters at creating top-notch night guards and mouth guards. Our entire range of products is proudly crafted on American soil by our longstanding team of dental professionals. And here’s our rock-solid pledge to you:

  • 100% satisfaction. We stand behind our products and will provide you with nothing less than our personal best from our long-standing team.
  • 30 Day Satisfaction Guarantee. If you don’t like your new custom guard whether it’s a fit issue or comfort, let us know within 30 days and we’ll refund you.
  • 1 Year Warranty. If you grind through your night guard within 1 year of purchase, we’ll replace it for you free of charge.

What you get:

  • Dental impression kit. We send you plastic trays, dental putty, and a a prepaid envelope to mail back to us.
    You need to have a timer, clean hands, & good solid teeth. No braces. Seriously, putty & braces do not mix.
  • (1) Hard Custom Dental Night Guard
  • (1) Ventilated retainer case

Should your first attempt at a dental impression miss the mark, there’s no need to stress. We’re here to help by providing a free redo kit, no questions asked.

We’re proud to announce our recognition as Forbes’ Best Night Guard choice for 2023

hard night guard voted best of 2023 forbes health

Not sure which guard is right for you? Get expert guidance with our 60 second quiz!

find your night guard match now graphic

Thickness Options

Thin for Light Bruxism 1mm thickness  (think invisalign) can be worn comfortably night after night or as a daytime guard. This night guard secures your teeth in place and provides lasting durability for light teeth grinding and jaw clenching

Thicker for Moderate to Heavy Bruxism An added layer of thickness for more durability. Ideal for moderate teeth grinding or jaw clenching.

If you’re a severe teeth grinder or clencher, check out our Durability Night Guard

sentinel mouthguards flat teeth from grinding graphic

Did you know you can fast track your order?

Looking to fast-track your custom mouth guard delivery? Make the most of our expedited shipping choice while checking out. With inclusive USPS Priority Shipping and a mere two-day turnaround, you’ll be enjoying the perks of optimal protection and comfort in no time.

why choose sentinel mouthguards graphic compare to dentist made custom night guard



Additional Information

Weight 3 oz

Thicker for moderate to heavy bruxism, Thin for light bruxism

Product Reviews

  • Leslie Prestage

    Perfect fit. No need for adjustments. This is a very well made product. Super professional. I will update this post if needed but have been very happy so far!

  • Brendan W.

    Ok so heads up this will be a weird review and I am giving this such a high review for a reason despite the fact that I hate wearing a night guard. Period

    But here is why it gets a perfect review other than price:

    The night guard fits precisely to my teeth. The low profile makes it not press so tightly onto my teeth. It’s literally perfect. Not too tight but snug. The thing is, if you ARE a night guard wearer and have gotten lucky enough to have found a perfect guard, congratulations. I was not so lucky until now. This guard beats all other guards I have tried by a metric mile.

    Now, this should be a perfect review but I’m deducting a small percentage of a point for a scratch on my retainer case. 9.75 out of 10 for matching me with the perfect night guard. My teeth grinding pain is gone. That is what I bought it for so mission accomplished. Thank you!

  • Jackie

    I will admit I was nervous to purchase this after looking at the photos of how to take a teeth impression. It looked like it was something I could mess up quite easily. I ordered this because I grind my teeth and I’m now obsessed with Sentinel! I did mess up my impression the first time but it was because I was so nervous and should have waited until I felt comfortable but I went for it and mixed the putty too slowly. It hardened before I could even get it in my mouth! The company mailed me a retry kit free of charge.
    I was going to use this for just nighttime grinding but I use it during the day too. Which I can now say it works well for both day or night. All night guards will damage overtime so I know my double use is shortening its lifespan but with the prices (compared to the dental office) I’ll just buy another one. Love it!

  • Pat K.

    Unbelievable savings!

    My dentist quoted me at $650 for this exact same night guard! I took this to my hygienist just to confirm and even she said it’s a well-made, high quality night guard. The fit is spot on!
    Grateful for your service that saves customers like me hundreds!

  • Jocelyn R.

    Due to the pandemic, my teeth grinding went from bad already to worse. I’m currently on my 2nd night guard from Sentinel. Ordered my first one back in 2017 and now in May 2021. This is a great value. The product is high quality and a great bang for your buck. Customer service is always outstanding!

  • Lizette

    LOVE! You must buy! Honestly so great. Fits perfect and good quality for the price.

  • Jeanette Getz

    I read all the reviews and thought this would be perfect for my nighttime teeth . I was wrong. I couldn’t sleep with the guard in. When I did doze off I woke up and took it out. Wore it one night and returned it. No thanks.

  • Gregory Mullen

    Same as dentist. Thank you sentinel team!!

  • Sabrina Collingsworth

    Love this service! I have been ordering mouthguards from Sentinel since 2013 and have never looked back! My dental office was charging me $700 for these hard guards. I’m a bad grinder and go through them quicker than most. Sentinel Mouthguards has great customer service and an even better product.
    Happy to be a faithful customer! I have and will continue to recommend this to friends & family.

    Sabrina C.

  • Jennifer Newsom

    Easier than I thought! I was nervous about using this but the putty process was easy and they include a free putty pack in case you need to redo it (which I did need a 2nd try). I even called the customer service line and had them stay on the phone with me while I took the impression. They were terrific and very helpful. My guard fits beautifully. A+ service!! Will be back.

  • Danny Warner

    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!

  • C. Redding

    After getting a guard through sentinel I now have a slight disdain for my dentist. He tried to charge me $520.00 for the same guard I just got for 135 through sentinel… what a joke. Awesome Price, Awesome Guard!

Free Shipping

We ship your kit with everything you need from the molding trays and putty to the prepaid return packaging.

30 day guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 30 days for a full refund.

Save 20%

By entering coupon code "big spender", you save 20% on orders over $200.