Sports mouthguards: protecting teeth during activity
A mouthguard is your first line of defense against knocked-out teeth, broken teeth, and mouth injuries during sports. Learn which type is right for you and how to care for it.
Medically reviewed by Dr. Jose, DDS — June 22, 2026
Why mouthguards matter
Tooth injuries happen fast. A direct blow to the face during sports can knock out a tooth, crack it, or damage the soft tissues of your mouth — your lips, tongue, cheeks, and gums. A mouthguard cushions that impact and significantly reduces the risk of these injuries.
Mouthguards protect not just your teeth, but your entire smile. The goal is to absorb and spread the force of a collision so no single tooth bears the full blow.
Three types of mouthguards
Stock mouthguards come pre-shaped and ready to wear. They’re inexpensive and available at most sporting-goods stores. The downside: they rarely fit well, can feel bulky, and may shift during play, leaving gaps where your teeth are exposed.
Boil-and-bite guards are softened in hot water, then molded to your teeth by biting down and using your fingers to shape them. They fit better than stock guards and are more affordable than custom options. However, the fit depends on how carefully you mold them, and they may not be as durable or precise over time.
Custom mouthguards are made by your dentist from an impression or scan of your teeth. They’re fabricated in a lab to fit your unique bite and tooth alignment. They offer the best fit, comfort, and protection — and they’re easier to speak and breathe through. If you wear braces, have missing teeth, or play a high-contact sport like football or hockey, a custom guard is worth the investment.
Special considerations
If you wear braces, a standard mouthguard won’t fit properly over the brackets. Talk to your orthodontist or dentist about a custom guard designed for braces, or ask whether a special boil-and-bite product might work for your situation.
Children and teenagers who are still growing should have their mouthguard checked at each dental visit. As their teeth shift and jaws develop, the fit may change. A loose guard won’t protect as well and can be uncomfortable.
Care and replacement
After every use, rinse your mouthguard with cool water. Don’t use hot water — heat can warp it. Store it in a ventilated case (a small plastic container with drainage holes works well) to prevent bacterial growth. Never seal it in a tight bag.
Clean it gently with a soft toothbrush and mild soap a few times a week. Don’t soak it in bleach or hot water, and avoid harsh chemicals.
Replace your mouthguard if it becomes cracked, develops tears, feels loose, or no longer fits snugly. Young athletes may need a new one every 1–2 years as their mouth grows. Adults should replace it if it’s visibly worn or damaged.
What to do if a tooth is injured
If you suffer a mouth injury during sports, see a dentist as soon as possible — even if the tooth doesn’t feel painful right away. A cracked or loosened tooth may need urgent care. If a tooth is knocked out completely, call your dentist or an emergency dental provider immediately. (See our guides on knocked-out teeth and broken teeth for detailed next steps.)
How MediMouth helps
Your MediMouth dentist can examine your teeth, bite, and sports history to recommend the best type of mouthguard for you. If a custom guard makes sense, we can take impressions and arrange fabrication. We’ll also help you understand how to fit and care for a boil-and-bite guard if that’s your choice. And if a sports injury does happen, we’re here to help you get urgent care and restore your smile.
Ask your dentist at your next visit whether a mouthguard is right for your activities — and don’t wait until an injury happens to protect your teeth.
Frequently asked questions
Do I really need a mouthguard for recreational sports?
Yes. Any sport where there's a risk of impact to the face — even non-contact sports like skateboarding or gymnastics — can result in tooth injury. A mouthguard cushions blows and protects your teeth, lips, tongue, and jaw.
What's the difference between stock, boil-and-bite, and custom mouthguards?
Stock guards are pre-formed and least expensive but often don't fit well. Boil-and-bite guards soften in hot water so you can mold them to your teeth — better fit than stock, but less precise. Custom guards are made by your dentist from impressions of your teeth and offer the best fit, comfort, and protection. If you wear braces or play high-contact sports, a custom guard is worth discussing with your dentist.
How do I care for my mouthguard?
Rinse it with cool water after each use. Store it in a ventilated case (not a sealed bag, which traps moisture). Clean it gently with a soft toothbrush and mild soap. Never leave it in hot water or direct sunlight. Replace it if it becomes cracked, loose, or no longer fits — especially if you're a growing child.