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Sports mouthguard guide

By the Life in Good Form editors. Updated 2026-10-15.

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Quick answerThe ADA recommends a properly fitted mouthguard for sports with a risk of mouth or face injury, and says the best one is custom made by your dentist; if that is not possible, a boil-and-bite or stock guard from the store is still worth wearing. High school rules (NFHS) require mouthguards in football, field hockey, ice hockey, lacrosse and, for wrestlers with braces, wrestling. A good fit fully covers the upper teeth, separates the biting surfaces and protects lips and gums. NFHS notes research does not show mouthguards reduce concussion risk.
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Three types of mouthguards

TypeUpsideDownside
Custom (dentist made)Accurate fit, comfortableMay need several dental visits
Boil-and-bite (mouth-formed)Sold in stores; may fit better than stockCan wear down; may not last a whole season
Stock (ready to wear)Fits easily over bracesOften poor fit; can be bulky and hard to breathe or talk in

Summarized from the NFHS mouthguard position statement and the ADA's MouthHealthy page.

Which sports need one

The National Federation of State High School Associations (NFHS) mandates mouthguards in football, field hockey, ice hockey, lacrosse, and wrestling for athletes who wear braces. Beyond those, its sports medicine committee suggests athletes consider a properly fitted mouthguard for any sport with a risk of mouth or face injury from contact with another player or with a stick, bat or ball.

The ADA adds that collision and contact sports carry the most risk, but athletes in non-contact activities such as gymnastics and skating can be injured too. Its view is that a mouthguard should be part of standard athletic gear from an early age. Youth leagues set their own rules, so check with your coach.

What a good fit looks like

The NFHS says a properly fitted mouthguard should:

If the lower teeth stick out farther than the upper teeth, a guard over the lower teeth may be preferred. The NFHS also says not to alter a mouthguard in any way that reduces protection, and that a properly fitted, unaltered guard has not been shown to interfere with talking or breathing.

For a boil-and-bite guard, the ADA says to follow the maker's instructions for softening and shaping it.

Braces and dental work

The ADA says a properly fitted mouthguard may be especially important for people with braces or fixed bridge work, since a blow to the face could damage brackets, and the guard keeps braces from cutting the lips and cheeks. Ask your dentist or orthodontist which guard to use; they may suggest one for the lower teeth too if those have braces. The NFHS notes stock guards fit easily over braces. Do not wear a retainer or other removable appliance during contact sports, the ADA says.

Care and replacement

Choosing for your athlete

Start with the league rule, then pick a type. For a young player whose teeth are still changing, a store-bought guard that is replaced as they grow is a practical start, and the ADA says any properly worn guard beats none. Athletes in high-contact sports, or with braces or dental work, should talk to a dentist about a custom guard. Whatever you buy, check it against the NFHS fit points above.

For the rest of the gear, see our football helmet guide and lacrosse helmet guide. If you grind your teeth at night, see our separate night guard guide.

What to look for when you buy

Boil-and-bite sports mouthguard

Best for: Most youth and adult athletes

The ADA says boil-and-bite guards may fit better than stock ones.

Watch out: Follow the softening instructions; replace when worn.

See options on Amazon

Mouthguard for braces

Best for: Athletes with braces

The ADA says a fitted guard is especially important with braces; ask your orthodontist.

Watch out: Ask your dentist or orthodontist which type to use.

See options on Amazon

Vented mouthguard case

Best for: Storage between games

The ADA suggests a sturdy, vented case so the guard can dry.

Watch out: Keep the case out of the sun and away from pets.

See options on Amazon
When to talk to a doctor: See a dentist right away for a knocked-out, loose or broken tooth. A mouthguard does not prevent concussions; remove any athlete with a suspected head injury from play.

Questions people ask

Which sports require a mouthguard?
In high school, the NFHS mandates them in football, field hockey, ice hockey, lacrosse and wrestling for athletes with braces.
Is a boil-and-bite mouthguard good enough?
The ADA says custom is best, but a store guard is still worth wearing if a custom one is not an option.
Do mouthguards prevent concussions?
The NFHS says research does not support that mouthguards reduce concussion risk or severity.
How often should I replace a mouthguard?
When it is worn, damaged or loose; kids and teens may need new ones more often.
Can I wear a mouthguard with braces?
Yes, and the ADA says it may be especially important; ask your orthodontist which type.
Should a mouthguard cover the top or bottom teeth?
The top teeth in most cases; the NFHS says a lower guard may be preferred if the lower teeth stick out farther than the upper teeth.

Sources

Sources checked 2026-10-15.