Hard Dental Night Guard for Teeth Grinding and Clenching


The Hard Dental Night Guard Is for Light to Moderate Teeth Grinding/Jaw Clenching (Bruxism)

Need help deciding whether to choose an upper or lower night guard? Click here

  • Custom fit to your dental anatomy
  • Non-flexible. Snaps into place for a perfect fit.
  • Made in the USA! All materials are BPA, Phthlate, Silicone & Latex FREE
  • Easy dental impression instructions ensures consistent teeth impression results
  • Excellent durability and clarity.
  • Relieves jaw pain, teeth pain, headaches, tooth sensitivity
  • Protects teeth from breakage, cracking, damage
  • Protects veneers, crowns, restorative dental work
  • Combats pain or tenderness of the temporomandibular joints
  • 90 day money back guarantee + 1 year replacement warranty if you crack or wear down your guard!
  • Free retainer case
  • FREE SHIPPING IN US (international customers are responsible for shipping on return mailer only)

Product Description

Want your night Guard faster? Choose the expedited shipping option at checkout. This service includes all inclusive USPS Priority Shipping + a (2) business day turnaround time

Hard Dental Night Guard for Teeth Grinding & Jaw Clenching

Choosing Your Thickness

Thin for Light Bruxism 1mm thickness  (think invisalign) can be worn comfortably night after night or as a daytime guard. This night guard secures your teeth in place and provides lasting durability for light teeth grinding and jaw clenching

Thicker for Moderate to Heavy Bruxism An added layer of thickness for more durability. Ideal for moderate teeth grinding or jaw clenching.

If you’re a severe teeth grinder or clencher, check out our Extreme Durability Hard Night Guard

Not sure which night guard is right for you? Take our quiz!

choose my night guard

The Hard Dental Night Guard fits snug & snaps to your teeth. It is an exact fit and leaves plenty of room for jaw movement.

Wake up Smiling or Your Money Back

Located in St. Petersburg, Florida, we specialize in night guard and mouth guard manufacturing.  All of our products are made in the USA by professional lab technicians with a combined dental experience of 20+ years. We guarantee:

  • 100% satisfaction. We stand behind our products and will provide you with nothing less than our personal best from our long-standing team.
  • 90 Day Satisfaction Guarantee. If you don’t like your new retainers whether it’s a fit issue or comfort, let us know within 90 days and we’ll refund you in full.
  • 1 Year Warranty. If you grind through your night guard within 1 year of purchase, we’ll replace it for you free of charge.

FREE SHIPPING IN THE USA (international customers are responsible for shipping on return mailer).

Here’s how it works

protect your teeth

Taking your own dental impression is EASY (and you do not need to pay a dentist hundreds of dollars to do it).

What you get

  • Dental impression kit. We send you plastic trays, dental putty, and a a prepaid envelope to mail back to us.
    You need to have a timer, clean hands, & good solid teeth. No braces. Seriously, putty & braces do not mix.
  • (1) Hard Dental Night Guard
  • (1) ventilated retainer case

If for any reason you feel your dental impression did not turn out well the first time around, don’t worry!  We will send you a redo kit free of charge.




Additional Information

Product Reviews

  • Jeanette Getz

    I read all the reviews and thought this would be perfect for my nighttime teeth . I was wrong. I couldn’t sleep with the guard in. When I did doze off I woke up and took it out. Wore it one night and returned it. No thanks.

  • Gregory Mullen

    Same as dentist. Thank you sentinel team!!

  • Sabrina Collingsworth

    Love this service! I have been ordering mouthguards from Sentinel since 2013 and have never looked back! My dental office was charging me $700 for these hard guards. I’m a bad grinder and go through them quicker than most. Sentinel Mouthguards has great customer service and an even better product.
    Happy to be a faithful customer! I have and will continue to recommend this to friends & family.

    Sabrina C.

  • Jennifer Newsom

    Easier than I thought! I was nervous about using this but the putty process was easy and they include a free putty pack in case you need to redo it (which I did need a 2nd try). I even called the customer service line and had them stay on the phone with me while I took the impression. They were terrific and very helpful. My guard fits beautifully. A+ service!! Will be back.

  • Danny Warner

    Wasn’t to sure about doing this online but the cost difference between my dentist and going online was worth it to find out for me. This worked great! I’m very impressed with Sentinel, they were quick and affordable. Thanks!

  • C. Redding

    After getting a guard through sentinel I now have a slight disdain for my dentist. He tried to charge me $520.00 for the same guard I just got for 135 through sentinel… what a joke. Awesome Price, Awesome Guard!

  • Jerry Chua

    At first I bought night guards from Proteeth but these are much better.

    A few things to note:
    1. Don’t remove the putty from the tray after impression has been taken. Keep it in the plastic tray & mail the whole thing back.
    2. Mix the putty fast. I mixed too slow the 1st time & had to redo. They included an extra putty set so it wasn’t a problem.
    3. They offer free adjustments if its too tight.

    Really impressed with this product, incredibly easy to follow instructions and if you follow them, you’re left with a secure fitting, comfortable and perhaps most importantly a better nights’ sleep.

    I know another reviewer was worried that reboiling wouldn’t be effective since they might be similar to other mouth guard brands. That is true. You cannot boil the Sentinel Mouthguard. However, if you take your mold correctly you will not need to do anything but wear it. It wasn’t the most comfortable process but worked.

  • Kim

    I received my mouth guard and am very happy with the product so far.
    It was a bit nerve racking finding an internet company to fulfill this need. I’m glad I found Sentinel.
    I have been telling everyone I know about it and I’ve found most of my friends and family have mouth guards.
    I will continue to talk about it and hope to send some folks your way.

  • Mary Bedenborough

    This is a review about their customer service. This product just didn’t work for me. I have a very bad gag reflex and was unable to use the trays to take my teeth impressions. I opened and used the impression kit they sent out and called them to tell them that I couldn’t complete the process. They were so kind and issued my full refund immediately. Didn’t even have to send back the materials! Even though I didn’t end up getting a night guard, I was so pleased with the way they handled my issue. I will be back if I can ever get past this horrible gag reflex! Thank you again Sentinel. -Mary

  • Tracy C.

    I am a severe grinder and had an extensive amount of dental work to correct cracked and shortened teeth. I’ve even cracked crowns. I was a bit skeptical about Sentinel but figured it would save me a lot down the line since I average about a night guard every 18 months. My $650 custom night guard has hairline cracks all over after just one year. The process was thoroughly explained in the email and customer service has been excellent. It felt tight at first, but I’ve already gotten used to it after just 3 nights. Not only that I saved $$$, I don’t have to go to the dentist’s for fitting, which alone is a big hassle. I cannot be happier!

  • Bree Patterson

    100% Satisfied Customer!!

    I’ve been through so much with my jaw. Popping, pain while eating, teeth sensitivity..it was dominating my life but I couldn’t afford the dentist made ones. I opted to go with Sentinel Mouthguards and I couldn’t be more pleased.
    The mouth guard fits beautifully and my pain is GONE!
    You guys are serious life savers.

  • Lyza R.

    Very satisfied customer. I was blown away by the exceptional customer service and quality product. Would recommend to anyone.

Free Shipping

We ship your kit with everything you need from the molding trays and putty to the prepaid return packaging.

90 day guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 90 days for a full refund.

Save 20%

By entering coupon code "big spender", you save 20% on orders over $200.