Durability Mouth Guard for Heavy Teeth Grinding


Extreme Strength, Ultimate Protection

Teeth grinding habits vary, and heavy grinding can wreak havoc on your smile, impacting more than just your sleep quality. We recognize the significant short and long-term effects of chronic teeth grinding and clenching.

Teeth wear, cracks, chips, and sensitivity don’t develop overnight, but once they surface, costly dental repairs become necessary. Enter our Sentinel Mouthguards Durability Mouth Guard – meticulously crafted to shield your smile with unmatched strength and resilience.

Preserving Smiles, Saving Wallets

There’s no substitute for the natural joy of eating, laughing, talking, and chewing with your own teeth. At Sentinel Mouthguards, we prioritize both the comfort of your smile and the preservation of your tooth structure.

Our Durability Mouth Guard for Heavy Teeth Grinding is expertly crafted to endure the rigors of intense grinding and clenching, providing unparalleled protection even in the most severe cases.

Constructed from robust, long-lasting materials, our mouth guard is engineered to absorb and disperse the impact of teeth grinding and clenching, safeguarding your teeth and jaw from the detrimental effects of this widespread issue.

Experience the difference in just three simple steps:

Here's how it works 3 easy steps

Our convenient and user-friendly mold kit empowers you to effortlessly create a precise mold of your teeth right from the comfort of your home. Once we receive your mold, we’ll craft a custom mouthguard tailored to your individual dental profile, guaranteeing optimal protection and comfort.

Say no to shortened, cracked teeth and hello to a healthy smile.

sentinel mouthguards smile

Excellence Crafted in St. Petersburg, Florida

For over a decade, we’ve assisted thousands in conquering teeth grinding and clenching. Our innovative mold kit simplifies the process, enabling you to effortlessly create a precise mold of your teeth at home. Upon receiving your mold, our expert lab technicians based right here in St. Petersburg, Florida, meticulously craft a mouth guard tailored to your unique dental profile, guaranteeing unparalleled protection and comfort.


Product Description


    • Provides Comprehensive Protection and Relief:
      • Prevents teeth grinding and clenching, offering immediate relief from jaw pain, teeth pain, headaches, and tooth sensitivity.
      • Shields teeth from fracture lines, chips, cracks, and breakage, preserving their integrity and appearance.
      • Guards against teeth shortening caused by grinding and clenching, mitigating long-term dental issues and future repairs.
      • Promotes better sleep and superior oral health, ensuring overall well-being.
    • Premium Quality and Assurance:
      • Proudly Made in the USA with the safest materials, free from BPA, silicone, gluten, latex, MMA, and phthalates.
      • Protects dental work with confidence, safeguarding veneers, crowns, and other restorative dental work from damage.
    • Satisfaction Guaranteed:

why choose sentinel mouthguards

The Sentinel Guarantee

Rise and Shine Grinning, Backed by Our Money-Back Promise

  • 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: Experience added peace of mind with our comprehensive 1-year warranty. Your satisfaction and protection are our top priorities.

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.

quiz to suggest night guard

How does it work?

Get ready for a seamless experience. We’ll send an impression kit with all you need for a precise dental mold. Mix, mold, and send it back in the prepaid envelope. Your custom mouth guard is crafted in 3-4 days. It’s hassle-free and ships for free!

What you’ll get:

  • Comprehensive impression kit with detailed instructions and prepaid return mailer
  • (1) Durable Night Guard
  • Breathable retainer case
  • 1-year warranty for added peace of mind
  • All-inclusive free shipping (international customers responsible for return shipping of dental impression)

Our Dedication to Your Satisfaction

At Sentinel Mouthguards, your happiness is our priority. We go above and beyond to ensure your complete satisfaction, offering complimentary adjustments for your night guard and striving to exceed your expectations with every purchase.

Additional Information

Weight 3 oz
Guard For

Upper teeth (most preferred), Lower teeth

Product Reviews

  • L.B.

    Best purchase I ever made 3 years ago and here I am again to order a new one! You guys are great!

  • Rick Meranus

    Received my guard over the weekend and have only worn it a couple of nights but so far it’s amazing. Already feeling better! No headaches and my teeth are not hurting during the day anymore. I’ll update again after a couple of months to give some feedback on durability but so far so good.

  • Thomas Creel

    I went through several online companies before finding yours. I had to return every single one of them for various reasons. Hands down best fitting guard I’ve ever worn. You guys are exceptional and have my business as long as I’m grinding my teeth! -Thomas

  • S. Johnson

    My night guard fits perfectly & is quality
    Would not hesitate to use this company again

  • Dominic Shoopman

    This is my second purchase from this company courtesy of my dog chewing the last one. Before I found Sentinel, I had spent $500 on the same thing from the dentist.

    Making one impression takes about 5 minutes from start to finish. You do have to take a second impression of your lower teeth too (also takes 5 min.) so allow about 20 minutes total to familiarize yourself with the instructions, etc.

    Make sure you mix the two different color putties together quickly until they are one color, then you put it in the tray and press your teeth and you’re done! Mail it off and you have a mouth guard back in about a week. Very easy, and well worth the money.

  • L D

    I’m not a person who writes reviews but this company deserves a glowing one! After emailing Chasity with some questions, I felt comfortable placing my order. They make the molding process super easy to follow. I mailed the impressions back and within a week my new guard arrived. It was beautifully crafted and fits perfectly. The attention to detail is apparent. This is an exemplary company that I will be using from now on.
    I love that this service is available and my teeth thank you!

  • Scott R. Perez

    Returning customer and I’m please with this replacement. I did have to take a new dental impression as I learned they only keep the impressions on file for 1 year. This replacement guard is just like the one I received several years ago. Consistent, good work. Thanks

  • Lola Gavine


    First try with the dental impression kit was unsuccessful but they include an extra packet of putty so I was able to get a nice teeth impression the second time around. I emailed the company a picture and they verified the impression was sufficient. Mailed it in and the mouth guard came about a week later. I am extremely impressed with the fit and quality. Just the same as my dentist only hundreds of dollars less!

  • J.S. Owens

    My first time ordering from this brand. Impression kit came very quickly and included extra putty in case I needed it. The cost is worth it to be able to complete it from home without having to go to the dentist. The product fits very well and has really helped reduce my jaw pain.

  • Steven Daniels

    Customer service is remarkable! I had ordered from another company and after messing up my impression, they tried to charge me $25 to send out another impression kit. Sentinel sent one for free. No questions asked. They’re fast, friendly and less expensive than the dentist. I highly recommend. *****

  • Lauren Maysi

    This mouth guard has helped my jaw tremendously! I could barely chew before wearing this. My jaw was so bad off I was making crunching sounds while I ate and had to chew softly.
    I’m still trying to be mindful of my eating but NOT due to pain from grinding and clenching. Thank you!

  • Johnny S.

    Durable enough to handle my jaws and that’s saying a lot! I have gone through so many of these but the material is strong and I love that they don’t add any resins or acrylics. I’m sensitive to chemicals. This is the safest, best night guard I have found! A++++

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.