Durability Mouth Guard for Heavy Teeth Grinding

Original price was: $215.00.Current price is: $189.00.

Extreme Strength, Ultimate Protection

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

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

Preserving Smiles, Saving Wallets

Ask any dentist- there is simply nothing better to eat, laugh, talk and chew with than natural teeth. At Sentinel Mouthguards, we prioritize both the comfort of your smile and the preservation of your tooth structure.

Get lab-direct savings today and skip the dental office visits. Our night guards are priced at a fraction of the cost you’d pay at a dental office – saving you hundreds of dollars without compromising on quality. Enjoy premium materials and lab experience without the premium price tag.

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 built to last without sacrificing comfort.

  • Prevents teeth from grinding and clenching
  • Prevents jaw pain, headaches, teeth pain and sensitivity
  • Protects teeth from chipping and cracking
  • Prevents long term dental issues and future dental repairs caused by clenching and grinding
  • Promotes better sleep and better oral health
  • 100% Satisfaction guarantee + 1 year warranty

Experience the difference in just three simple steps:

Here's how it works 3 easy steps

Our convenient and user-friendly mold kit allows 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 helped thousands protect their teeth grinding and clenching. Our innovative mold kit simplifies the process, enabling you to create a precise mold of your teeth at home. Upon receiving your mold, our expert lab technicians based right here in St. Petersburg, Florida, 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 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

  • Cody Thayer

    10/10 recommend! Custom fit to my teeth and the process was straightforward/fast.

  • Candace T.

    Getting started was a breeze! I received my impression kit in the mail, followed the instructions, mixed the mold compounds, and took impressions of both my upper and lower teeth. Then, I just popped it into the pre-paid mailer and sent it back. Within about a week, I had the finished product in hand.

    I must say, the service was exceptional, and the product exceeded my expectations. It’s not only high-quality but also incredibly comfortable. And the best part? It does the job perfectly. Plus, it’s a much more affordable option compared to shelling out $500-600 at the dentist for a similar fitting. Highly recommended!

  • Adriana Covacevich


    This is a close to dentist quality as your going to get online. I have gone through several companies claiming to make quality products but Sentinel is the only one I’ve found that compares to my dentist made guard that I had for years. I would strongly recommend this product and company.

  • Ryan

    Quality product!

    I was looking for something comparable to what my dentist was trying to sell me but without paying $600. I did my research and settled on Sentinel. What brought me to Sentinel after reviewing other online companies is their transparency in the materials that they use, they’re a US based company and they’ve been making custom mouth guards for many years. I’m glad I trusted them to make my custom night guard. The care and attention to detail is magnificent! The fit is great. Process was easy. I couldn’t be happier. If you’re on the fence, choose Sentinel! You won’t be disappointed!

  • Sondra Cortez

    I value good companies more than ever these days. When you call, someone picks up. Friendly, fast process. The delivery of both items (the impression kit and the custom night guard) were correct and on time. Free shipping too! I’m impressed!

  • Steven Grossman

    I typically never leave reviews but as this product does require some back and forth transactions I do feel compelled to leave some feedback. First, in full admittance, I was nervous about taking my dental impression. The company goes above and beyond to give detailed instructions including written ones as well as two separate videos. You don’t have to utilize all of the instruction (the written ones are probably enough) but if you’re like me and want to make sure you thoroughly understand what you’re doing, the information is there and I did appreciate that.

    I had no problem making my upper dental impression but my lower one didn’t come out well. Luckily, the company included 2 extra putty packs for additional attempts.
    I sent my impressions off and received the custom night guard within a weeks’ time.
    The fit is much better than any other night guard I have ever worn.
    I am over the moon with the comfort and feel of this night guard.

    Overall, this service is wonderful. Email communication was prompt and friendly.
    I would highly recommend Sentinel Mouthguards to anyone considering a custom night guard for teeth grinding.

  • Thomas S.

    I’ve been grinding for several years now. My dentist recommended one and quoted $700. I just couldn’t bring myself to pay that much for a night guard made by my dentist. So, I did research on more affordable/alternative options.So far, my guard is working great and at a fraction of the night guard price. I couldn’t be happier!

  • Jasmine Joy

    This is the best mouth guard for heavy teeth grinders. I have been through many mouth guards from store bought to dentist made and Sentinel Mouthguards makes the best ones. Impression process was easy for me but that may be because I’ve had several taken over the years and knew what to look for.

    They do send an extra putty for a 2nd attempt and they are quick to reply via email if you send a photo to doublecheck the quality of your dental impression. Overall, they’re a great company with an even better product. If you’re on the fence, I highly recommend!

  • Charles

    I just wanted you to know I am so grateful to you guys, thank you so much for redoing my night guard in the thicker material. It absolutely did the trick and I am sleeping without jaw pain. I’m waking up without headaches and I just can’t thank you enough.
    But I wanted to thank you for going the extra mile and fixing that for me, and sending it so promptly. Y’all have a blessed day and drive safely!

  • Ankita James

    Works perfect!!

    I have had night guard from other online companies and the fit was never right. Received my Sentinel guard and have been using it for several nights. I love this one. Best night guard I’ve ever owned! Fit is perfect, quality is high and the process was FAST! A++++

  • Sarah R.

    Love this company!! I have ordered 2 guards from Sentinel plus a teeth whitening kit. Everything I’ve received has fit perfectly, it’s high quality and the service is fast and friendly. Sentinel has my business for years to come. Thank you for doing things right!

  • John Zubritzky

    The absolute best night guard ever! So glad I found this here. My dentist was asking for $600. Fit is true to my mouth and my jaw pain is gone!

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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.