If your child has started sparring — or is about to — you've probably wondered whether a mouthguard belongs in their gear bag. It's a small piece of equipment that's easy to overlook, but for many young martial artists it becomes a class-day essential. Here's a simple, no-pressure guide to help you decide what your child needs and how to choose well.
When Does a Young Martial Artist Need a Mouthguard?
The short answer: it depends on the style and how contact-heavy the class is. Disciplines with striking or sparring — like Taekwondo, Boxing, and MMA — commonly call for a mouthguard once kids begin partner drills. Grappling arts like Brazilian Jiu-Jitsu often use them too, since accidental bumps happen when bodies are close.
Your child's coach is the best first stop. Many schools have their own rules about when mouthguards become mandatory, and tournaments almost always require one for divisions that allow contact. When in doubt, ask the instructor before the next class.
The Main Types of Mouthguards
There are three common categories, and the differences mostly come down to fit and convenience.
Ready-to-Wear (Stock)
These come pre-formed and ready to use straight from the package. They're inexpensive and quick, but because they aren't shaped to your child's teeth, the fit can feel bulky and loose — which younger kids may fuss with.
Boil-and-Bite
By far the most popular choice for kids. You soften the guard in hot water, then have your child bite down so it molds to their teeth. The result is a much more secure, comfortable fit at a friendly price. Most families start here.
Custom-Fitted
Made from a mold of your child's teeth, usually through a dentist. These offer the best fit and comfort but cost more. Some parents choose this route for kids who train and compete frequently.
Fitting Tips for Kids
A good mouthguard should stay in place without your child needing to clench constantly. If it slips, pops loose when they talk, or makes them gag, the fit likely needs another try. Boil-and-bite guards can usually be re-molded if the first attempt isn't quite right — just follow the package directions and let it cool fully before checking the fit.
Keep growth in mind, too. Kids' mouths change quickly, and a guard that fit perfectly a few months ago may need replacing. If your child is losing baby teeth or getting braces, mention it to your dentist and coach so you can pick something that works for that stage.
Keeping It Clean and Fresh
Mouthguards live in a warm, damp gear bag, so a little care goes a long way. Rinse it with cool water before and after each use, and give it an occasional gentle brush. Let it dry fully before storing it in a ventilated case rather than sealing it away wet. A quick sniff test before class never hurts — if it's seen better days, it's time for a fresh one.
Teaching your child to rinse and store their own guard is a nice, low-stakes way to build the habit of caring for their gear.
The Bottom Line
For most kids who spar or grapple, a well-fitting boil-and-bite mouthguard is an easy, affordable place to start. Check with your child's coach about what their class and any upcoming tournaments require, prioritize a snug and comfortable fit, and keep it clean between sessions. With the right guard tucked in their bag, your young martial artist can focus on what they love — training, learning, and having fun on the mat.