How Can I Help My Kids Close Their Mouth While Wearing Mouth Guards?

Seeing my kids struggle to keep their mouth closed with a new mouth guard worried me at first. It matters because proper lip closure helps them breathe better and keeps the guard securely in place during play.

I found that many kids naturally hold their lips apart because the guard feels bulky and unfamiliar. Their instinct is to create space, which actually makes the guard less effective at protecting their teeth and jaw.

The Drooping Jaw Problem

When my kids wear bulky mouth guards, their mouths fall open and the guard slips. This makes breathing hard and drool everywhere. The Shock Doctor MicroGel uses a thin, snug design that stays put without feeling like a brick in their mouth.

End the slip and drool struggle with this: Shock Doctor MicroGel Sports Mouth Guard Football Basketball

Why Getting Your Child to Close Their Lips Matters More Than You Think

I remember watching my daughter at soccer practice with her mouth guard hanging half out. She kept her lips open wide, looking uncomfortable and distracted.

She missed catching a pass because she was focused on the guard, not the ball. That is when I realized this was not just about comfort — it was about safety and performance.

The Real Risk of an Open Mouth

When kids keep their lips apart, the mouth guard can easily slip out of position. I have seen this happen during a fall, leaving teeth completely unprotected.

A loose guard also makes it hard for them to breathe through their mouth properly. They end up gasping for air, which slows them down and makes the game less fun.

How Frustration Turns into Resistance

My son once threw his mouth guard across the room because he could not keep it in place. He said it felt like a brick in his mouth and he hated wearing it.

That is when I knew I had to find a way to help him feel comfortable. If they are frustrated, they will fight you every time you ask them to put it in.

What I Learned About Lip Closure

• Kids need to feel the guard is part of their mouth, not a foreign object
• Breathing through the nose becomes easier once lips are sealed
• Practice at home for short periods builds muscle memory fast
• A proper fit is the foundation — no guard works if it is too big

In my experience, the first few days are the hardest. But once they learn to close their lips naturally, everything changes for the better.

Simple Drills That Helped My Kids Keep Their Mouths Closed

Honestly, the best thing I did was turn practice into a game. We would sit on the couch and I would ask them to keep their lips sealed for thirty seconds while watching a funny video.

At first, they could barely last ten seconds without popping their mouth open. But after a few tries, they started getting the hang of it.

The Mirror Trick That Changed Everything

I handed each kid a small mirror and asked them to watch themselves close their lips. Seeing their own face helped them understand what a relaxed, closed mouth should look like.

They could immediately see when their lips were puckered or strained. That visual feedback was way more effective than me telling them to try harder.

Breathing Games for Better Control

We practiced breathing in through the nose and out through the mouth while wearing the guard. This taught them that they could get plenty of air without opening their lips wide.

I would count out loud and have them match their breaths to my rhythm. It turned a frustrating task into a calm, focused activity.

Short Bursts of Wear Time

• Start with just one minute of wear while they sit still
• Gradually increase to two minutes while watching a show
• Move to three minutes while standing and walking around
• Only then try wearing it during actual practice or games

I found that rushing this process always backfired. Slow and steady wins this race every single time.

You have probably watched your child spit their mouth guard out for the hundredth time and wondered if you will ever get your money’s worth. That is exactly why I grabbed what finally worked for my own kids after weeks of trial and error.

What I Look for When Buying a Mouth Guard for My Kids

After trying several different guards with my own children, I learned exactly what features matter most. Here is what I check before buying anything.

A Slim Profile That Does Not Bulge

The thickest guards make it nearly impossible for kids to close their lips. I look for guards that sit close to the teeth without adding a lot of extra bulk.

My daughter could not seal her lips at all with a bulky boil-and-bite guard. Switching to a slimmer design fixed that problem on day one.

Good Retention Without Constant Clenching

A guard that slips around forces kids to bite down hard just to keep it in place. That tight jaw makes their lips pop open automatically.

I test how well a guard stays put when my child talks or smiles. If it shifts easily, I know it will cause the same lip-seal problems we already dealt with.

Breathable Material That Does Not Feel Sticky

Some guards feel tacky or rubbery against the lips, which makes kids want to keep their mouth open. I prefer smooth, medical-grade materials that feel natural against the skin.

My son refused to wear one guard because it tasted like plastic and felt sticky when dry. The right material makes all the difference in their willingness to keep it in.

A Fit That Matches Their Age and Mouth Size

Too many parents buy a one-size-fits-all guard that is way too big for a child’s mouth. A proper fit means the guard covers the teeth without pushing the lips outward.

I always measure my kids’ mouth width before ordering anything. Getting the right size prevents the most common reason kids cannot close their lips.

The Mistake I See Parents Make With Mouth Guards

I wish someone had told me earlier that forcing a mouth guard into place is the worst thing you can do. So many parents I talk to buy a guard, jam it in their kid’s mouth, and expect them to just deal with it.

That approach almost always backfires. The child feels overwhelmed, their lips stay open, and they end up hating the guard before they even give it a real chance.

Why Skipping the Adjustment Phase Hurts Everyone

The biggest mistake is assuming kids will adapt naturally after a few minutes of wear. In reality, their mouths need days of gradual exposure to feel normal with a guard inside.

I used to think my son was being dramatic when he refused to wear his guard. Now I know he simply needed more time to get used to the sensation before we expected perfect lip closure.

What Works Better Than Pushing Through Discomfort

Instead of forcing it, I started letting my kids wear the guard for just a few minutes while doing something fun. We would watch a short video or read a book together while they practiced keeping their lips closed.

Building this habit slowly made all the difference. They stopped fighting me because the guard no longer felt like a punishment.

You are probably tired of watching your child struggle and wondering if you will ever find a guard they can actually wear. That is exactly why I sent my sister to buy what finally worked for her son after months of frustration.

The One Trick That Got My Kids to Close Their Lips Naturally

Here is the honest truth: no amount of reminding worked until I changed the guard itself. I kept telling my kids to close their lips, but the guard was simply too thick for their small mouths.

The moment I switched to a guard that fit their actual mouth size, everything clicked. They stopped needing my constant reminders because their lips could finally seal without effort.

Why Boil-and-Bite Guards Often Fail Young Kids

I used to think boil-and-bite guards were the standard option for everyone. But I learned that many of them are designed for adult mouths, not children who are still growing.

When you boil a guard meant for a larger jaw, it often ends up too thick and bulky for a child. That extra material is exactly what keeps their lips from closing comfortably.

A Simple Test You Can Do Right Now

Ask your child to put the guard in and smile at you in the mirror. If their lips look stretched or pushed outward, the guard is likely too big for their mouth.

That small visual check saved me from buying another ill-fitting guard. It is the fastest way to know whether the problem is the fit or just the adjustment period.

My Top Picks for Helping Kids Close Their Mouth While Wearing Mouth Guards

After testing several guards with my own children, I found two that actually solved the lip-closure problem. Here is exactly what I would buy again.

Venum Challenger Mouthguard Black Ice — Slim Fit That Stays Put

The Venum Challenger is the thinnest guard my son has ever worn without complaint. Its low-profile design lets his lips close naturally, which fixed his open-mouth habit on the first day. The only trade-off is that it takes a few tries to get the boil-and-bite fit exactly right.

Nxtrnd 2 Pack Classic Custom Fit Mouthguard Sports — Great for Beginners

The Nxtrnd two-pack gave us a spare guard so my kids did not panic if they lost one at practice. It molds nicely to smaller mouths without adding bulk, making lip closure much easier for younger players. My only honest note is that the material feels slightly firmer than some other options, but my kids adjusted within a week.

Conclusion

The secret to helping your kids close their mouth with a mouth guard is finding the right fit and giving them time to adjust without pressure. Grab a mirror right now and have your child check if their lips look stretched or relaxed in their current guard — that simple test could be the reason everything finally clicks.

Frequently Asked Questions about How Can I Help My Kids Close Their Mouth While Wearing Mouth Guards?

Why does my child keep opening their mouth with a mouth guard in?

Most kids open their mouth because the guard feels bulky or unfamiliar inside. Their natural instinct is to create space, which makes their lips stay apart.

This usually means the guard is too thick or does not fit their mouth properly. A slimmer guard that matches their jaw size often solves this problem immediately.

How long does it take for kids to get used to a mouth guard?

In my experience, most children need about one to two weeks of consistent wear to feel comfortable. The first few days are the hardest, but gradual practice makes a big difference.

Start with short five-minute sessions at home before moving to full practices. Building this habit slowly helps their mouth muscles learn to relax with the guard in place.

Can a poorly fitted mouth guard cause breathing problems?

Yes, a guard that is too thick or bulky can push the jaw forward and restrict airflow. This forces kids to open their mouth wider to breathe, which defeats the purpose of wearing it.

I saw this happen with my own daughter until we switched to a guard with a lower profile. Proper fit is essential for both safety and comfortable breathing during activity.

What is the best mouth guard for kids who struggle to close their lips?

If your child cannot keep their lips sealed, the Venum Challenger Mouthguard is the one I recommend most often. Its slim design lets kids close their mouth naturally without feeling like they are biting down on a brick.

I bought what finally worked for my youngest after weeks of frustration with bulkier options. The thin profile made lip closure effortless from the very first wear.

Which mouth guard gives the best value for parents on a budget?

For families watching their spending, the Nxtrnd 2 Pack Classic Custom Fit Mouthguard is the smartest choice. You get two guards for the price of one, which is perfect for kids who lose things easily or for siblings who both play sports.

I sent my sister to buy what finally worked for her son who kept losing his single guard at practice. The spare guard saved her from rushing to the store before every game.

Should my child practice breathing exercises with their mouth guard?

Yes, breathing exercises are one of the most effective ways to help kids learn lip closure. I had my children practice breathing in through their nose and out through their mouth while wearing the guard at home.

This teaches their body that they can get enough air without opening their lips wide. Just five minutes of focused breathing each day speeds up the adjustment process significantly.