I stood there in the driveway, staring at the small piece of tooth my eight-year-old son held in his palm. It had broken clean off when he and a friend hit the concrete on a hoverboard. The machine died the moment it left the sidewalk, and both boys went flying. My son’s adult front tooth was now missing half its length. That chipped smile stayed with us for months while I put off the dentist, partly out of fear for what the bill would look like. A mouthguard costs about $25. Fixing that one tooth set me back $200. I learned the hard way that the question of when should kids wear protective gear goes far beyond the football field.
When Do Kids Actually Need Mouthguards?
The short answer from pediatric dentist Dr. Liel Grinbaum is clear: by age seven or eight, when the permanent adult teeth have begun to come in, mouthguards should be part of the regular gear for any contact sport. This is the age when children’s jaws are still growing but their adult front teeth are fully exposed and vulnerable. A fall or a hit at this stage can damage a tooth that has to last a lifetime.
Dr. Grinbaum treats many young patients who have suffered tooth injuries from activities that parents often consider low-risk. Playground equipment, trampolines, and scooters send kids into his office regularly. The rise of electric bikes, mopeds, and other motorized toys has only increased the chances of dental trauma. A mouthguard is not just for the organized sport with a referee. It is for any activity where a child could fall or collide with something hard.
For younger children who still have mostly baby teeth, Dr. Grinbaum is less concerned. Baby teeth are temporary, and very young kids are unlikely to tolerate wearing a mouthguard anyway. But once those permanent teeth arrive, the calculus changes. A single accident can create a lifetime of dental work. So the practical answer to when should kids wear a mouthguard is: as soon as their adult teeth start showing, and for any activity where their face could meet a hard surface.
What Are the Underestimated Activities Causing Tooth Injuries?
Most parents know that football, hockey, and rugby require mouthguards. Those sports involve deliberate contact and hard equipment. But the injuries that land kids in a pediatric dentist’s chair often come from places no one expects. Dr. Liel Grinbaum sees plenty of damage from the playground — a simple swing to the face, a tumble off the monkey bars, a collision on the slide. Trampolines are another frequent culprit. When multiple children bounce at once, the risk of a knee or elbow connecting with a mouth is high.
Basketball deserves special attention here. Karin Grinbaum, an orthodontist, points out that basketball players keep their arms raised high while playing defense. Even an accidental elbow to the face during a jump shot can crack a front tooth. The sport looks non-contact on the surface, but the reality is different. Players crowd the key, fight for rebounds, and move at speed. A mouthguard should be standard equipment for anyone playing organized basketball.
Recreational activities like skateboarding, bicycling, in-line skating, and hoverboarding also carry risk. My own son’s hoverboard accident is proof. We all remember helmets for head protection, but mouths are just as exposed. A fall at even low speed can send a child face-first into pavement. The same logic applies to scooters and electric bikes. If a child is moving faster than they can run, a mouthguard is worth considering.
Baseball and softball present another hidden danger. A wild pitch, a line drive off the bat, or a slide into base can all result in dental injury. Soccer, with its headers and accidental kicks to the face, is another sport where a simple mouthguard can prevent a complex dental repair. The pattern is clear: any activity where a ball, a body part, or the ground can strike the mouth is a candidate for protection.
How Much More Expensive Is Dental Repair Compared to Prevention?
Let me give you a concrete comparison from my own experience. The mouthguard I bought for my son after his accident cost roughly $25. The dental repair to fix half a broken adult front tooth cost $200. That is a single tooth, a single visit, a single composite bonding procedure. If the damage had been worse — if the nerve had been exposed or the tooth had been knocked out entirely — the price would have climbed much higher.
Dental injuries do not end with one repair. A damaged adult tooth may need monitoring for years. It can discolor, weaken, or develop an infection down the road. Crowns, root canals, or even implants become real possibilities. The $25 mouthguard starts to look like an incredible bargain when you consider the potential cascade of future costs. Helmets became normal for biking and skating because we recognized the long-term cost of head injuries. Mouthguards deserve the same normalization.
Karin Grinbaum puts it plainly: it is cheaper to buy a mouthguard than to fix damage to a permanent tooth. The math is not complicated. A $25 investment can save hundreds or even thousands of dollars over a child’s lifetime. Beyond the financial side, there is the emotional cost. Watching your child lose part of a permanent tooth is gutting. Waiting months for a repair because you dread the bill is a feeling I would not wish on any parent. Prevention is not just economical. It is peace of mind.
What Types of Mouthguards Are Available and Which Is Best?
Parents have three main options when shopping for a mouthguard: stock, boil-and-bite, and custom-fitted. Each has strengths and weaknesses, and the best choice depends on your child’s age, activity level, and budget.
Stock Mouthguards
A stock mouthguard is pre-formed and ready to wear right out of the package. It is the cheapest option and widely available at pharmacies and sporting goods stores. The downside is fit. Because it is made in a generic shape, it can feel bulky, slip around, or make breathing and talking difficult. A poor fit can lead a child to remove the guard during play, which defeats the purpose entirely. Stock guards are better than nothing, but they are not ideal for active kids who need to breathe hard during sports.
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Boil-and-Bite Mouthguards
Boil-and-bite guards offer a middle ground between cost and customization. You drop the U-shaped mouthguard into hot water to soften the material, then have your child bite down firmly to create an impression of their teeth. After a few seconds, the guard hardens into a semi-custom fit. These are widely available, affordable, and significantly better than stock options. They tend to stay in place better and feel more comfortable. For most families, a boil-and-bite mouthguard is the practical choice. It balances protection, comfort, and price.
Custom-Fitted Mouthguards
A custom-fitted mouthguard is made by a dentist using a mold or a 3D scan of your child’s teeth. This option offers the best fit, the most comfort, and the highest level of protection. The guard is thin enough to allow easy breathing and speaking but strong enough to absorb impact. The trade-off is cost and time. Custom guards can run from $100 to several hundred dollars, and you need a dental appointment to get the mold made. For children who play high-contact sports year-round, or for those with braces or other dental hardware, a custom guard is worth the investment.
Regardless of which type you choose, the most important thing is that your child actually wears it. A mouthguard sitting in a gym bag does nothing. Find one that fits well enough that your child forgets they have it in. That is the real test of a good mouthguard.
How to Care for a Mouthguard
A mouthguard that is not cleaned properly can become a breeding ground for bacteria. Karin Grinbaum recommends cleaning the guard with antibacterial soap and water after each use, then letting it air dry completely. Never leave a wet mouthguard in a sealed case, where moisture can encourage mold and mildew growth. A quick rinse is not enough — scrub it gently with a soft toothbrush if needed.
Mouthguards also need to be replaced regularly. Children’s mouths grow quickly, and a guard that fit perfectly at age eight may be too tight or too loose by age nine. Dr. Liel Grinbaum advises replacing mouthguards every season or every six months, whichever comes first. Wear and tear from biting and chewing can also weaken the material over time. A cracked or warped guard offers less protection. Check the guard before each season or after any significant dental work, such as losing a baby tooth or getting braces adjusted.
Storage matters too. Keep the guard in a ventilated case that allows airflow. Avoid leaving it in a hot car or near a heater, as heat can distort the shape. A little routine care keeps the guard effective and hygienic for its entire lifespan.
Frequently Asked Questions
When should kids wear a mouthguard for activities that are not traditional sports?
Kids should wear a mouthguard for any activity where a fall, a collision, or a fast-moving object could strike the mouth. This includes skateboarding, bicycling, in-line skating, hoverboarding, scooters, trampolines, and playground play. The rule of thumb is: if the child is moving faster than they can run, or if they are around other children moving at speed, a mouthguard is a smart precaution. The mouthguard does not need to be expensive — a basic boil-and-bite model works well for recreational use.
What is the difference between a boil-and-bite and a custom-fitted mouthguard?
A boil-and-bite mouthguard is a semi-custom option that you shape at home by softening the material in hot water and having your child bite down. It costs around $10 to $30 and offers a decent fit for most kids. A custom-fitted mouthguard is made by a dentist using a mold or 3D scan of your child’s teeth. It costs significantly more, often $100 or higher, but provides the best fit, comfort, and impact absorption. For children who play high-contact sports or have braces, a custom guard is usually worth the extra expense.
Is it safe for a child with braces to wear a mouthguard?
Yes, it is safe and strongly recommended. A mouthguard protects both the teeth and the braces from impact. However, a standard boil-and-bite guard may not fit well over brackets and wires. A custom-fitted mouthguard designed for orthodontic patients is the best option. Your orthodontist can make a guard that accommodates the braces without putting pressure on the brackets. Wearing a mouthguard with braces is especially important because a blow to the face can damage the braces themselves, leading to longer treatment times and additional costs.
