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

  • Alex Jackson

    The process was smooth and I received my night guard for teeth grinding quickly. So far, my jaw feels much better and my headaches are not as frequent in the morning. I think I may need one for daytime too. Ugh!
    Either way, at least these are way more affordable than my dentist!

  • Nicholas Cook

    So glad they started offering the 3mm night guard. I grind so badly that my teeth were wearing through the 2mm hard guard. I’ve had this one for 8 months now and so far so good!

  • Sentinel customer

    Excellent product. Works exactly as advertised. I can breath easier, drink and even speak clearly. But even better is that it took us 3 attempts to mold the impression correctly and each time, Sentinel was patient with us and helped us until we got it right. Remarkable product. And let me add that my wife and I have had many of these from the dentist over the years. These are just as durable.

  • K.D.

    Product works great! It comes with a nice storage case. Definitely recommend!

  • A. Valenzuela

    I was looking for a safe mouth guard and researched heavily. I asked several companies what was in their materials that they use and most were either vague or didn’t respond. This was the only company that I found that was willing to be transparent about the products they use.
    I did confirm that the plastic is BPA free which was my main concern. The night guard took many nights to get used to but I finally enjoy wearing it. Thank you for being a reputable company. -Alicia

  • Art C.

    I love this guard. It fits perfectly. I can’t sleep without it and it’s helped my TMJ tremendously. Thank you! -Arthur

  • Sandy Mcqueen

    Top notch service and outstanding, high quality product! I love your night guards and they have saved my life! I was spending so much unnecessary money at the dental office and then when I couldn’t afford that, I went to the drugstore options. Ugh! So happy that you have an affordable option that LASTS! Love you guys!

  • Melissa

    The product is fine but ultimately didn’t work for what I needed it for. Resulted in a refund. Refund process was easy.

  • Shana Odlen

    Spoke with Alexandra and she was very helpful and recommend that a ask for some extra putty!!

  • Rebecca Streeter

    Better than my dentist! A+++

  • Mel H

    I got this for my elderly mother because she grinds her teeth VERY badly at night. Her mouth is tiny, and since the process requires taking a teeth impression, I asked for extra material. Getting the teeth impression on her tiny mouth was a little difficult but only because again, small mouth. It molds and hardens very quickly. in a matter of 2 minutes, so it may take a couple of tries to get it perfect, but overall it’s easy to use, and has easy directions. She says the mouth guard fits her well. A good purchase for the money in my opinion.

  • Jake B.

    Great product, not too bulky. Way less than the dentist. Happy customer!

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.