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Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case, M3, 4ct - 2 of 4Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case, M3, 4ct - 3 of 4Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case, M3, 4ct - 4 of 4
Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case, M3, 4ct - 1 of 4

Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case, M3, 4ct

$22.09 reg $28.72
Sale save $6.63 (23% off)

In Stock

Sold & shipped by Growve
Eligible for registries and wish lists

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About this item

Highlights

  • M3 mouth guards are the ideal solution for nighttime teeth grinding and clenching.
  • ncludes 2 heavy duty mouth guards (60mm x 51mm x 3mm), 1 large guard (68mm x 51mm x 3 mm), 1 small guard (55mm x 43mm x 3mm), and 1 retainer case.
  • Each mouth guard can be easily trimmed to fit any mouth size, teeth alignments, tooth sizes & mouth shapes for optimal comfort.
  • Helps relax jaw muscles, prevent teeth bite, grinding, clenching and alleviate problems that may cause potential dental injury.
  • Cruelty Free & Made in the USA!

Description

Our mouth guards are the ideal solution for nighttime teeth grinding, clenching, allowing you to sleep continuously through the night. M3 offers the only Heavy Duty option and includes a retainer case! With 4 guards and 3 sizes you will certainly find the fit that works best for any purpose you see fit. Teeth grinding, athletic sports, mouth guards, or even as a teeth whitening tray! Each mouth guard is easily trimmed to fit any mouth size. Can be adapted to fit a wide variety of teeth alignments, tooth sizes & mouth shapes for optimal comfort.* The ultra-comfort guard relaxes jaw muscles, prevents teeth bite, grinding, clenching and alleviates problems that may cause potential dental injury.* M3 is proud to provide you with cruelty-free products made right here in the United States of America.* Molding Directions: Bring a pot of water to a boil and remove from heat for one minute. Using a large metal spoon, fully immerse the heavy duty mouth guard into the water. Leave for 20 seconds (no longer than 25 seconds). Remove mouth guard from pot and lay on a paper towel. After 3 seconds pick up the mouth guard and place it on the top row of teeth. Once secure, gently press upward with your thumbs to form a mold around your teeth. Then close your mouth and use a sucking sensation to create a tight fit.
Trial/Mini/Travel Size: Yes
Suggested Age: Adult
Product Warning: Keep out of reach of children
Package Quantity: 4
Material: Silicone
TCIN: 88179326
UPC: 850021371081
Origin: made in the USA
The above item details were provided by the Target Plus™ Partner. Target does not represent or warrant that this information is accurate or complete. On occasion, manufacturers may modify their items and update their labels.
We recommend that you do not rely solely on the information presented. If you have a specific question about this item, you may consult the item's label, contact the manufacturer directly or call Target Guest Services at 1-800-591-3869.
If the item details aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 2.8 inches length x 3.58 inches width x 3.84 inches height
Estimated ship weight: 0.2 pounds
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO, Alaska, Hawaii
item ships from third party seller: Growve

Return details

This item can be returned to any Target store or Target.com.
This item must be returned within 30 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.

Q: why are there 4 in the package? why not one? especially because i am looking to try out wearing a mouth guard to check my tolerance before investing in a custom made guard. thanks for your help!

submitted by suzanne - 2 months ago
  • A: Hi Suzanne, thank you for your question! M3's mouth guard set comes with multiple mouth guards - incluing two sizes (small and large) so you can choose whichever fits your mouth best. There are also two color options: clear and frosted.

    submitted byM3 Naturals Team - 2 months ago
    Brand expert

Q: How many nights of use is one of these guards appropriate for before discarding?

submitted by Flygirl99 - 3 months ago
  • A: Thank you for your question! It really depends on the individual, since everyone grinds and clenches at different levels. Many users find our guards more durable than typical disposables and can get several nights of use out of each one. We recommend replacing the guard whenever you notice wear, thinning, or a change in comfort.

    submitted byM3 Naturals Team - 2 months ago
    Brand expert

Q: How do I microwave it

submitted by Karen G - 4 months ago
  • A: Hi Karen, in order to mold the mouth guards to your teeth, bring a pot of water to a boil and remove from heat for one minute. Using a large metal spoon, fully immerse the heavy duty mouth guard into the water. Leave for 20 seconds (no longer than 25 seconds). Remove mouth guard from pot and lay on a paper towel. After 3 seconds pick up the mouth guard and place it on the top row of teeth. Once secure, gently press upward with your thumbs to form a mold around your teeth. Then close your mouth and use a sucking sensation to create a tight fit.

    submitted byM3 Naturals Team - 4 months ago
    Brand expert

Q: I bought the M3 naturals mouth guards. Which is the one I boil to fit and mold to mouth upper teeth? The clear one? Instructions say "heavy duty one". Could you please explain. Thank you

submitted by Norma - 5 months ago
  • A: Hi Norma, thanks for your question! You can boil any of them to mold to your teeth. The set comes in two sizes (small and large), so you can choose whichever fits your mouth best. There are also two color options: clear and frosted.

    submitted byM3 Naturals Team - 5 months ago
    Brand expert

Q: How many mouthguards ( and what sizes) are we purchasing? Your caption says 4, another description says 3, a buyer says 2....

submitted by Target customer - 5 months ago
  • A: Hello! M3's Mouth Guard Kit includes 4 total mouth guards: 2 heavy duty mouth guards (60mm x 51mm x 3mm), 1 large guard (68mm x 51mm x 3 mm), 1 small guard (55mm x 43mm x 3mm), and 1 retainer case.

    submitted byM3 Naturals Team - 1 month ago
    Brand expert

Q: Can I used in tandem with clear retainers?

submitted by Melvin - 7 months ago
  • A: Curious minds unite, Melvin! We're glad you're exploring options with the Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth from our premium collection. While these 4 custom-fit retainers with case are designed for standalone nighttime protection, using them alongside clear retainers isn't typically recommended unless approved by your dental professional to ensure optimal comfort and effectiveness.

    submitted byM3 Naturals Team - 7 months ago
    Brand expert

Q: Am I to use only 1 mouth guard (either on top or on buttom) or best to use BOTH top and buttom mouth guard at the same time? If only to use 1, which is better to use, top or bottom? Thanks

submitted by Melanie - 8 months ago
  • A: Thanks for reaching out with your great question, Melanie! We’re thrilled you're exploring the benefits of the M3 Naturals Mouth Guards for Nighttime Teeth Grinding, Clenching & Sensitive Teeth, 4 Retainers with Case. Typically, most users only need to wear one mouth guard—either on the top or bottom row—rather than both at the same time. Which arch to wear it on can depend on comfort and dentist recommendation, but many people find the upper guard to be more natural to keep in place overnight. We recommend consulting with your dental professional to determine the best fit for your needs. We're glad you're prioritizing oral health with M3 Naturals!

    submitted byM3 Naturals Team - 8 months ago
    Brand expert

Q: Is there an alternate way to heat this for the first moliding that doesn't need a microwave?

submitted by Sea - 10 months ago
  • A: Hi Sea! Thank you for your question! Yes! If you don’t have access to a microwave, you can heat the mouthguard using stovetop boiling water. 1. Boil water in a small pot on the stove. 2. Remove from heat and let it sit for about 30 seconds to slightly cool. 3. Submerge the mouthguard in the hot water for 30-60 seconds (check instructions for exact timing). 4. Carefully remove using tongs and let it cool slightly before molding to your teeth. Let us know if you need further assistance!

    submitted byM3 Naturals Team - 10 months ago
    Brand expert

Q: Is the mouth guard Phthalate free & BPA free

submitted by Oatmilk mom - 1 year ago
  • A: Hello! Yes! It is designed with safety and user health in mind. They are made from high-quality, medical-grade materials that are BPA-free and phthalate-free to ensure safe and effective use for nighttime teeth grinding and clenching. For any further inquiries or confirmation regarding the materials used in the M3 Naturals Mouth Guards, you can directly contact our customer support team at support@m3naturals.com. Thanks!

    submitted byM3 Naturals Team - 1 year ago
    Brand expert

Q: Can I use this guard for the bottom teeth?

submitted by Nemiko - 2 years ago
  • A: Hi Nemiko! Yes, you can use this mouth guard on upper or lower teeth. It includes 4 guards in different sizes, so you can use which fits best.

    submitted byM3 Naturals Team - 2 years ago
    Brand expert

Related Categories

4.7 out of 5 stars with 1263 reviews
ease of use: 1.57 out of 5
quality: 2.09 out of 5
value: 2.3 out of 5
25% would recommend
12 recommendations
5 out of 5 stars
Thumbs up graphic, would recommend
5 January, 2026Verified purchase

(no review title)

Arrived undamaged in timley fashion
B
quality: 3 out of 5
Did you find this review helpful?
1 out of 5 stars
17 December, 2025
originally posted on M3 Naturals
Image

Add instructions

I bought it because I had a bad case of TMJ but it came with no instructions, useless.
1 reply from M3 Naturals Customer Care team - 27 days ago
Hello Joe, thank you for sharing your feedback on Mouth Guards. The step-by-step instructions are printed on the side of the box, but we realize that sometimes things can be confusing. If you’d like, please don’t hesitate to reach out to our Customer Service team at support@m3naturals.com. We’d be more than happy to provide you with the instructions directly and assist you further. Your comfort is our priority! Best, Shiela M3 Naturals Support
JoeGo
1 guest found this review helpful. Did you?
4 out of 5 stars
16 December, 2025
originally posted on M3 Naturals
Image

Prevented my grinding

I have been pretty happy with the mouth guard it’s just a little bulky. I wear it at night to prevent grinding. When it starts to wear out it gets kind of bumpy. That’s when I got the 2nd one out and am using it.
1 reply from M3 Naturals Customer Care team - 27 days ago
Hello, thank you for your review of Mouth Guards. It is great to hear they have helped prevent grinding at night, and we appreciate your note about the fit feeling a bit bulky. These are made to provide custom fit nighttime protection, and it makes sense to switch to a new one once the guard starts to wear and feel uneven. Thank you for sharing these helpful details! Best, Shiela M3 Naturals Support
Gramma Coop
Did you find this review helpful?
5 out of 5 stars
16 December, 2025
originally posted on M3 Naturals
Image

Perfect

I have worn these for a few years. They work so much better than ones the dentist make .Soft but very effective for a night guard
1 reply from M3 Naturals Customer Care team - 28 days ago
Hi Girly, thank you for sharing your experience with our Mouth Guards! It is wonderful to hear they have worked so well for you over the past few years as a night guard. The moldable trim to fit design is meant to provide comfortable, custom-fit nighttime protection for teeth grinding and clenching. So glad they have been such a great fit for your routine! Best, Shiela M3 Naturals Support
Girly
1 guest found this review helpful. Did you?
5 out of 5 stars
15 December, 2025
originally posted on M3 Naturals
Image

They work

I have been using them for years.. i like them...
1 reply from M3 Naturals Customer Care team - 28 days ago
Hi Crylynne, thank you for your review of Mouth Guards. It is great to hear you have been using them for years and that they work well for you. These guards are made for custom fit nighttime protection to help with teeth grinding and clenching. Glad they have been a reliable part of your routine! Best, Shiela M3 Naturals Support
Crylynne
Did you find this review helpful?
5 out of 5 stars
25 May, 2025
originally posted on M3 Naturals
Image

Good product

Easy to use. Appreciate having the different sizes.
1 reply from M3 Naturals Customer Service team - 8 months ago
Hi there! Great insight, and it's wonderful to hear that you find M3 Naturals Mouth Guards both easy to use and appreciate the variety of sizes available. Choosing the right fit is crucial for effective protection and comfort, and M3 Naturals ensures that customers can find the perfect size to meet their needs. This attention to detail not only enhances the user experience but also supports dental health by providing reliable, customized mouth guards suitable for sports, nighttime grinding, or other uses.
JR27909
Did you find this review helpful?
4 out of 5 stars
Thumbs down graphic, would not recommend
1 April, 2025Verified purchase

Clench it

I have a clenching problem while sleeping… I guess I need a dentist type made as it would be easier. Thanks
1 reply from M3 Naturals Team team - 10 months ago
Hi Dillie! Thank you for sharing your experience! If you're finding the M3 Naturals Mouth Guards challenging to use, a custom-fit option from a dentist might provide a better fit and comfort for nighttime clenching. We appreciate your feedback!
Dillie
ease of use: 3 out of 5
quality: 2 out of 5
value: 5 out of 5
Did you find this review helpful?
5 out of 5 stars
16 March, 2025
originally posted on M3 Naturals
Image

Cleans Great!

I bought this around Christmas time and I use it everyday. It cleans my bite guard and I absolutely love it.
1 reply from M3 Naturals Customer Service team - 10 months ago
Hey Jessica! It’s awesome that the Mouth+Guard has become such a staple in your routine! Cleaning your bite guard regularly can make a world of difference, and it's great to hear it's been working so well for you. The fact that you’ve been using it every day since Christmas speaks volumes about its effectiveness. Thanks for sharing how much you love it! 😄✨
1 guest found this review helpful. Did you?
5 out of 5 stars
14 March, 2025
originally posted on M3 Naturals
Image

Love these

I have used this as a night guard for the last few years. I enjoy it because it fits well after I trim the top part off just a bit. Easy to clean and last awhole
1 reply from M3 Naturals Customer Service team - 10 months ago
It’s great to hear that you’ve found a night guard that works well for you! 😴✨ It sounds like trimming it to your perfect fit has made it even more comfortable, and the fact that it’s easy to clean and lasts a long time is definitely a bonus! Glad it’s been helping you for the last few years. 😊
Birdpot
2 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
3 February, 2025Verified purchase

There are not 4 guards

There are 2 guards and 2 "trays". Both guards are too short to reach molars and are very very thick making them uncomfortable to wear. Box says remoldable but I don't trust it. Do not recommend.
1 reply from M3 Naturals Team team - 11 months ago
Hi Dxchac! Thank you for your review! We’re sorry to hear that the mouth guards didn’t work out for you. It’s important for us that our products provide comfort and effectiveness, and we appreciate your feedback. We’ll pass it along to improve future designs!
Dxchac
EaseOfUse: 1 out of 5
Quality: 1 out of 5
Value: 1 out of 5
5 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
10 January, 2025Verified purchase

Landfill Filler

These were misshapen right out of the box. Their “large” size is too small to reach the back molars. And it overly shrinks after cooling, making them painful to wear. For comparison, I routinely wear a basic sports mouth guard, so I know how a good guard should fit. This product is, sadly, landfill filler.
1 reply from M3 Naturals Team team - 1 year ago
Thank you for your feedback! We're sorry to hear about your experience with the M3 Naturals Mouth Guards. Your feedback about the sizing and durability will be shared the team. If you'd like assistance with a replacement or refund, please send us an email to support@m3naturals.com—we're here to help.
TheAwesome
ease of use: 1 out of 5
quality: 1 out of 5
value: 1 out of 5
6 guests found this review helpful. Did you?
2 out of 5 stars
Thumbs down graphic, would not recommend
27 October, 2024Verified purchase

Bulky and awful

Bought these to temporarily replace a custom hard plastic night guard, but couldn’t stand them. They’re made of soft silicone, which apparently needs to be very thick to offer any level of protection… it feels bulky and terrible. I couldn’t tolerate having it in my mouth for more than a few seconds, let alone trying to fall asleep. This was after trimming it down as much as possible. Bad buy.
1 reply from M3 Naturals Team team - 1 year ago
Hi! Thank you for sharing your experience, and we’re sorry to hear that our mouth guards didn’t work for you. We want to make it up to you. Please reach out to our customer service team at support@bioschwartz.com, and they'll assist you with a replacement or refund.
purchaseprincess
value: 2 out of 5
ease of use: 2 out of 5
quality: 2 out of 5
9 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
23 August, 2024Verified purchase

waste of money

I placed in the boiing water after I had turned off the heat following instructions and it was so flimsy, it fell apart. The second one I took out at 17 seconds and same thing happened. Could not wear, they fell apart. Waste of money.
CUBFAN6285
ease of use: 1 out of 5
quality: 1 out of 5
value: 1 out of 5
4 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
24 May, 2024Verified purchase

Trash

These are very thick and uncomfortable. The material is not durable. I bit clean through one in 2 weeks.
LRICE
quality: 1 out of 5
value: 1 out of 5
ease of use: 2 out of 5
8 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
19 April, 2024Verified purchase

Garbage

Should have listened to the bad reviews. Doesn’t mold well to your mouth and if you leave it in hot water for greater than 25 seconds, it completely melts.
Kxparis
quality: 1 out of 5
value: 1 out of 5
ease of use: 1 out of 5
7 guests found this review helpful. Did you?
5 out of 5 stars
23 March, 2024
originally posted on M3 Naturals
Image

Mouth guard

I like that it’s made of silicone so I’m not ingesting microplastics
Winyan
4 guests found this review helpful. Did you?
1 out of 5 stars
Thumbs down graphic, would not recommend
12 January, 2024Verified purchase

Too bulky i couldnt use it

Bulky and uncomfortable
Target shopper
ease of use: 1 out of 5
quality: 1 out of 5
value: 1 out of 5
7 guests found this review helpful. Did you?
2 out of 5 stars
29 November, 2023Verified purchase

Not for heavy grinders

It was comfortable and easy to wear, but I bit through it in a week. It’s not a good option for heavy grinders.
J
10 guests found this review helpful. Did you?
5 out of 5 stars
17 November, 2023
originally posted on M3 Naturals
Image

Comfy!

These are great! They are Super comfortable and we're easy to mold.
Megan333
Did you find this review helpful?
1 out of 5 stars
Thumbs down graphic, would not recommend
6 February, 2023

Dont wasre your money

Terrible quality. Lasted one night
TGT Reviewer
quality: 1 out of 5
value: 1 out of 5
8 guests found this review helpful. Did you?

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