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Prevention July 28, 2026 5 min read

Sports Mouthguards: Protecting Your Child's Smile

Youth athletes face real dental trauma risks. Learn how the right mouthguard protects teeth — and what to do if an injury still happens.

By Dr. Jason Kung, DDS, MS — Specialist Endodontist · UCLA DDS · OHSU MS

Medically reviewed by Dr. Jason Kung, DDS, MS · Specialist Endodontist · UCLA DDS · OHSU MS ·

Every weekend, youth soccer fields, basketball courts, and wrestling mats across the Bay Area see the same story play out: a collision, a fall, a stray elbow — and suddenly a child is cupping a knocked-out or broken tooth. Dental injuries are among the most common sports-related injuries in kids and teens, yet they are largely preventable. The solution is often as simple as the right mouthguard, worn consistently, every practice and every game.

Why Dental Trauma in Youth Athletes Is a Big Deal

A chipped adult tooth isn't just a cosmetic problem. Depending on how deep the fracture goes, it can expose the nerve inside the tooth, cause lasting sensitivity or pain, and require significant dental treatment. A tooth that is knocked completely out — called an avulsed tooth — has a narrow window of one to two hours in which it may be replanted successfully, and long-term outcomes depend heavily on how the tooth was handled in those first minutes.

Dental injuries can also affect teeth that are still developing. A hard blow to a child's jaw can damage the permanent tooth bud forming beneath the surface, with consequences that don't show up for months or years. This is one reason endodontists sometimes work with young patients on regenerative endodontic procedures — specialized treatments designed to encourage continued root development in teeth with injured or dying nerves.

The emotional and financial toll matters too. Emergency dental care, crowns, implants, and ongoing monitoring add up quickly — costs that are largely avoidable with proper protective gear.

Which Sports Carry the Highest Risk?

The American Dental Association estimates that athletes who do not wear mouthguards are 60 times more likely to suffer dental injuries. High-contact and collision sports carry obvious risk, but you may be surprised by the full list:

  • High risk: Football, hockey, lacrosse, wrestling, martial arts, rugby
  • Moderate risk: Basketball, baseball, softball, soccer, volleyball
  • Often overlooked: Gymnastics, skateboarding, mountain biking, cheerleading

Many youth leagues only mandate mouthguards for football and hockey. That doesn't mean other sports are safe — it just means the responsibility falls on parents to make protection a habit across all activities.

The Three Types of Mouthguards

Not all mouthguards offer the same level of protection. Understanding your options helps you make the best choice for your child.

Stock Mouthguards

These are the inexpensive, pre-formed guards sold at most sporting goods stores. They come in a limited range of sizes and cannot be adjusted to fit. Because they don't conform closely to the teeth, they can feel bulky, make it hard to breathe or speak, and offer the least protection. They are generally considered a last resort.

Boil-and-Bite Mouthguards

Also widely available at sporting goods stores, these are softened in hot water and then molded around the teeth. They fit better than stock guards and provide reasonable protection for many youth athletes. For casual recreational sports or a tight budget, a quality boil-and-bite is a meaningful step up from nothing at all.

Custom-Fitted Mouthguards

Made from an impression of your child's actual teeth, custom guards fit precisely, stay in place without biting down, allow normal breathing and speech, and distribute impact forces more effectively. Research consistently shows they offer superior protection. Your child's general dentist can fabricate one, and for young athletes in high-contact sports, the investment — typically $300–$500 — is well worth it.

Mouthguard Care and Habits That Actually Matter

The best mouthguard in the world does nothing sitting in a gym bag. Building good habits around gear is as important as choosing the right type.

  • Wear it every time — practices included, not just games
  • Rinse before and after each use with cool water or mouthwash
  • Store it in a vented case to prevent bacterial buildup
  • Replace it regularly — at least once a season, sooner if it shows wear or distortion
  • Update custom guards as your child grows — a guard that no longer fits snugly is less effective
  • Never share mouthguards between athletes

For children wearing orthodontic braces, talk to both the orthodontist and dentist. Special orthodontic mouthguards exist that cover both upper and lower arches, protecting brackets and soft tissue.

What To Do If a Dental Injury Happens Anyway

Even with good protection, injuries occur. Knowing how to respond in the first few minutes can make the difference between saving and losing a tooth.

If a tooth is knocked out: Pick it up by the crown — never the root. If it's dirty, rinse gently with milk or saline. Place it back in the socket if possible and have the child hold it there, or store it in a small cup of milk. Get to a dentist or emergency room immediately. Time is critical.

If a tooth is cracked or chipped: Save any fragments. Rinse the mouth with warm water and apply a cold compress to the face to reduce swelling. See a dentist as soon as possible. Depending on how deep the fracture goes, an endodontist may need to evaluate whether the nerve is affected — you can learn more on our cracked tooth treatment page.

If a tooth is pushed out of position: Do not force it back. See a dentist the same day. These injuries, called luxations, often require endodontic monitoring even if the tooth looks fine at first — more detail is available on our dental trauma page.

If a traumatized tooth ultimately requires treatment, options may include a root canal to save the natural tooth, or in more complex cases, apicoectomy — a minor surgical procedure. At Silicon Valley Endodontics & Microsurgery, Dr. Kung uses a Zeiss OPMI surgical microscope and CBCT 3D imaging to assess traumatized teeth with a level of precision that standard X-rays simply can't match.

A Final Word for Sports Parents

Shin guards, helmets, and knee pads are non-negotiable in most youth sports. A mouthguard deserves the same status. It weighs almost nothing, costs relatively little, and can spare your child years of dental treatment — and real discomfort. Make it part of the uniform.

If your child has experienced a sports-related dental injury — or if you'd like guidance on whether a previous injury needs endodontic follow-up — we'd be glad to help. Contact our Sunnyvale office at (669) 234-2354 to schedule a consultation with Dr. Kung. Our address is 1565 Hollenbeck Ave, Suite 106, Sunnyvale, CA 94087. Early evaluation is always better than waiting to see what develops.

Have a question about your tooth?

Dr. Kung sees emergency cases the same day when possible. Most consultations are 30 minutes and include a microscope examination.

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