Custom Hard Night Guard

Original price was: $169.00.Current price is: $149.00.

Do you find yourself waking up with a sore jaw or pounding headache, wondering why your nights aren’t as restful as they should be? You might be one of the millions who suffer from nocturnal bruxism – the unconscious habit of grinding or clenching your teeth during sleep. But fret not, because relief is within reach.

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:

Here's how it works 3 easy steps

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

  • Sanjay Webb


    I’ve tried the cheapo guards from the drugstore and the dentist made version. I have to say this is the best night guard I’ve ever had. This is a fast and efficient way to get a professionally made night guard. Sentinel has a strong commitment to customer satisfaction. This is a great value.

  • Michael & Sara

    Fits perfect and my teeth grinding has stopped!
    I was beginning to get hairline fractures in my teeth from grinding at night.
    Found Sentinel Mouthguards online and I paid a fraction of what my dentist wanted to charge me.The support team is proactive and responded to my questions fast. Got my night guard and it’s comfy and fits my teeth perfectly. You will not be disappointed!

  • Ann Quintanilla

    Impressive quality, fast delivery

    Having purchased from other manufacturers of night guards before, I can say that Sentinel Mouthguards creates high quality products and offers consistent, exceptional customer service. Plus, I received my night guard quickly after I sent off my impression! I’m 100% happy and will be recommending to all my friends and family

  • Carrie M.

    THIS IS IT!!

    I tried 2 other mouth guard companies before I settled on Sentinel and I won’t be going anywhere else! From the customer service to the impression teeth process to the receiving my night guard, it was quick and painless. My night guard fits like a glove. I sleep with it every night and my jaw feels 100x better. If you want experience and professionalism, this is it.

  • Marty Redding

    I originally ordered the soft guard but my teeth grinding is a little more intense than I thought it was. I saw wear marks on the soft one within the first month of use. Contacted Sentinel and they suggested a more durable type. After some back and forth, I decided to give the hard guard a try. Really impressed with the quality and fit. It’s thin but offers the protection that I needed. I can sleep with it in easily and I’m even getting to where I prefer to sleep with it. Never thought I’d say that! If you’re considering ordering a custom night guard online vs the dentist, this is the company. Fantastic work all around! A+++++++

  • Elizabeth Combs

    I wish I’d bought a Sentinel guard years ago. I had been using the boil n bites and they were always too big for my mouth. I felt like I chewed on those more! This type is hard so I can’t chew on it. It’s so slim and comfortable. A world of difference for me. I will update this review to speak on the longevity but for now, a huge thank you!

  • Danica Moriarty

    I have been wearing night guards for 30 years and this is by far the most comfortable one I’ve ever worn. The fitting kit was easy enough to manage. Turnaround was quick! Amazing! Thank you so much.

  • Aleksandra H.

    Get one!!

    You will be impressed with this company!
    For the past few years, I’ve been experiencing jaw clenching during my sleep. Although it may have started due to stress, even during periods where I felt calm, it continued to persist. The issue was further aggravated by a cheap night guard that I purchased for less than $20.

    I did some online research and decided to give Sentinel a try. Their customer service is excellent. Very helpful with the molding process and my night guard fits great!

    I’m entirely pleased and would recommend this service to anyone. A+

  • Justine K.

    Fantastic experience with Sentinel Mouthguards! From customer service to timeliness of the deliveries and receiving my night guard, everything was impressively smooth. I will be recommending this service to anyone who grinds their teeth. Thank you Sentinel!

  • Cristine Harvey

    Great customer service is why I continue to return every 2 years for new guards that I have chewed through.

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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.