Durability Mouth Guard for Heavy Teeth Grinding and Clenching


Defend Your Teeth Against The Daily Grind

Are you grinding your teeth so badly that you’re waking up with headaches, a sore jaw and sensitive teeth? Severe teeth grinding can affect so much more than your quality of sleep. We know how uncomfortable and frustrating this can be, which is why we created the Sentinel Mouthguards Durability Mouth Guard for Heavy Teeth Grinding and Clenching.

Our Durability Mouth Guard for Heavy Teeth Grinding and Clenching is specifically designed to withstand intense teeth grinding and clenching, offering superior protection and durability for even the most severe cases. Made from a strong, durable material, our mouthguard is engineered to absorb and distribute the force of your teeth grinding and clenching, protecting your teeth and jaw from the damaging effects of this common problem.

At Sentinel Mouthguards, we understand that finding the right solution for your heavy teeth grinding and clenching can be a challenge. That’s why 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 mouthguard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.

Just 3 Easy Steps!

3 east steps to receive your daytime mouth guard

With years of experience and expertise in the dental industry, you can trust Sentinel Mouthguards to provide you with the highest quality products and exceptional customer service. Say goodbye to the discomfort and pain of teeth grinding and clenching, and say hello to a better, more comfortable you with the Sentinel Mouthguards Durability Mouth Guard for Heavy Teeth Grinding and Clenching

  • Protect your teeth from damage and breakage. Our guards are designed to shield your teeth from the toughest impacts.
  • Relieves jaw pain, teeth pain, headaches, tooth sensitivity and more
  • Enjoy complete peace of mind with a custom fit that conforms perfectly to your unique dental anatomy.
  • Choose American-made quality you can trust. We never outsource our work, so you can be confident you’re getting the best product possible.
  • Our products are free of BPA, silicone, gluten, latex, MMA, and phthalates.
  • Experience unbeatable protection with our 3mm thickness. Whether you’re clenching or grinding your teeth, our guards will keep you safe.
  • Keep your guard securely in place with our non-flexible design. Say goodbye to slipping and sliding, and enjoy complete comfort.
  • Preserve your dental work with confidence. Our guards protect veneers, crowns, and other restorative dental work.
  • Combat TMJ pain and tenderness with ease. Our guards are the perfect solution for those suffering from TMJ-related issues.
  • Enjoy hassle-free molding with our easy dental impression kit. Plus, we include extra putty if you need a reattempt.
  • Our products are backed by our love it or your money back guarantee. We’re confident you’ll be completely satisfied with your purchase.

What You’ll Get

  • A complete impression kit with instructions, extra putty and prepaid return mailer
  • (1) custom night guard for heavy duty teeth grinding and jaw clenching
  • Breathable retainer case
  • Fast, free shipping in the USA  (international customers are responsible for shipping on return mailer).
  • 1 year warranty

Product Description

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

Sentinel Mouthguards® Durability Night Guard: Non-Flexible, Long-Lasting, and Safe

Crafted from dentist-grade, hard acrylic-like material, our night guard is built to last and features a non-flexible design that ensures maximum protection against teeth grinding and clenching. Safe for nightly use, our night guard is made with the safest dental materials available, including BPA, gluten, silicone, MMA, latex, and phthalate-free materials.

example of damage from teeth grinding and jaw clenching

Wake Up Smiling with Our Money-Back Guarantee

The Sentinel Guarantee

As a leading manufacturer of custom night guards and mouth guards based in St. Petersburg, Florida, we take pride in providing high-quality products that are tailored to your unique needs. Our night guards are made in our own lab by experienced lab technicians, ensuring that each guard is designed to meet our exacting standards.

We stand behind our products with our Sentinel Guarantee, which includes:

  • 100% unconditional money-back guarantee: We’re confident that you’ll love your new night guard, but if for any reason you’re not completely satisfied, simply return it within 30 days for a full refund.
  • 30-day option to let us get it right: If you don’t love your new night guard within the first 30 days of receiving your guard, we’ll work with you to make it right. Our goal is to ensure that you get the best possible fit and protection for your teeth.
  • 1-year warranty: We also offer a 1-year warranty on all of our night guards, giving you added peace of mind and protection.

Due to the thicker nature of this mouth guard, we require that you take upper and lower teeth impressions for an even bite and to ensure proper occlusion.

which mouth guard is right for you? Take our free quiz
Not sure which night guard is the best fit for your needs? Take our quick 60-second quiz and find out! Our quiz is designed to help you identify the right mouthguard for your unique dental profile and specific concerns. With just a few simple questions, you’ll receive personalized recommendations tailored to your needs and preferences.


Our Commitment To You

At Sentinel Mouthguards, we’re committed to your satisfaction. That’s why we provide free night guard adjustments and always work to make sure you’re completely happy with your purchase.

With our at-home dental impression kit and easy-to-follow instructions, you can take your own dental impression in just a few minutes. Our experienced lab technicians will use your impression to create a custom-fit night guard that’s tailored to your unique needs.




Additional Information

Weight3 oz
Guard For

Upper teeth (most preferred), Lower teeth


Non-binary (all dental tray sizes will be included), Male, Female

Product Reviews

  • Terri P.

    Half the cost then my dentist is selling for the exact same product and same results.

  • Sylvia Perez

    The communication was excellent, and the turnaround time was very fast. I would highly recommend this company for anyone looking for a reliable night guard provider.

  • Tiffany W.

    The process was easy and straightforward, and customer service was patient and helpful in answering any questions. I received my mouthguard and the fit is flawless. Excellent experience!

  • Zachary R.

    The customer service of this company is wonderful. They’re a small, family owned business and I love that everything is made right here in the USA! I have a gluten allergy and learned that my dentist was using a Chinese lab to make his night guards and couldn’t verify the materials in it! I was able to order a gluten free mouth guard from Sentinel that fits perfectly and I couldn’t be happier! Excellent product and service!!

  • Nadar

    I love my first night guard. Had some dental work done so ordering my second! I suffer from TMJ and this guard I wear for my lower teeth. It helps greatly with my jaw pain. No more popping and clicking since I started using it. The Sentinel team is fast, courteous and the product does the job at a price way lower than my dentist. Amazing!

  • Gina Cameron

    I love my mouthguard that I ordered last year in August and unfortunately I cracked the back piece where my molar grinds down on the guard.
    Sentinel sent me a free replacement. I received it so quickly and it fits perfectly. Thank you for taking care of your customers!

  • Jacky

    Great craftsmanship. Great fit. Overall 5 stars

  • Marie Caputo

    Just want you to know that I received my night guard and the fit is perfect! High quality product with great service! Will be using you again in the future!

  • David Darby

    This product is the real deal!
    I’m writing this review because I recently took my custom night guard that I received back in April to my dentist. I expected him to tell me that it was crap and that I needed to purchase a night guard through his office. Instead he said it was a very well made, great fitting guard. I’m very pleased with the high quality, commitment to safe products and the price! Keep up the good work!


    I LOVE the fit of this night guard! I had tried one from my dentist at a cost of $600. Wore it for 4 nights and threw it out. I tried the store bought guards with no luck. Figured I was out of options until I came across your website. Customer service was great at answering my questions and the guard fits FAR better than the others.

  • Jolene W.

    The guard I ordered a year ago is still good but I had some fillings on my back molars and that changed my bite so I’m reordering. Great product 😀

  • Joseph V.

    You guys have the best customer service. Hands down! I ordered from your company three years ago and just placed a second order. I can’t wait to receive my newest guard. Top notch everything!!

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.