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

  • 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.