Sport season has a way of sneaking up, and custom mouthguards are often the last thing sorted, usually a rushed stop at the chemist the week before training starts. A poorly fitted mouthguard doesn’t protect much, and a properly made one isn’t complicated to arrange. The sections below cover what’s actually worth knowing before you buy one off a shelf or book a fitting.
What to Actually Check Before Buying or Booking
Before season starts, the main things worth checking are the fit, the age of your current guard, and whether it still suits the sport being played:
- Look for a mouthguard moulded to your own teeth, a custom fit protects more than a boil-and-bite version.
- Match the guard to the person, kids and adults don’t need the same one, since growing mouths and mixed dentition change the fit over time.
- Check the age and condition of what you already have, worn, cracked, or loose guards should be replaced rather than stretched through another season.
- Confirm it’s still suited to the sport, different contact levels call for different thickness and coverage.
That covers the short version. If you’re in Engadine or elsewhere in the Sutherland Shire, the sections below go into what each of these actually involves.
Why a Custom Mouthguard Beats an Off-the-Shelf One
Not all mouthguards protect the same way. Stock guards from a sports store come in a handful of generic sizes, and boil-and-bite versions are softened in hot water and bitten into shape at home. Both can help in a pinch, but neither is moulded specifically to your teeth.
The Fit Actually Matters
A custom mouthguard is made from an impression or digital scan of your own teeth, so it sits precisely where it should. That matters for a few reasons:
- It stays in place during play rather than shifting or falling out
- It spreads the force of an impact more evenly across your teeth and jaw
- It doesn’t interfere with breathing or talking the way a bulky stock guard can
- It’s comfortable enough that people are more likely to actually wear it
That last point matters more than it sounds. A mouthguard sitting in a sports bag doesn’t protect anyone, no matter how well it was made.
Choosing a Mouthguard for Kids vs Adults
Kids and adults need different approaches here, and it’s not just about size.
For Growing Kids
For children still losing baby teeth, a mouthguard has to accommodate teeth that are moving, loose, or about to fall out entirely. A few things to keep in mind:
- Their guard may need replacing more often than an adult’s, sometimes every season
- A dentist can advise on timing as new teeth come through
- The same appointment can double as a check on general oral health
This is where a visit built around children’s dentistry is useful, since fitting and check-up can happen together rather than as two separate trips.
For Adults
Adults generally have a more stable bite, so a custom mouthguard tends to last longer between replacements. That said, anyone with dental work, crowns, bridges, or a fixed retainer, needs a guard that accounts for that, which is another reason a proper fitting can be an option that may help compared to a generic size from a shelf.
We see this across families in Yarrawarrah and Woronora Heights ahead of winter and summer sport seasons, often with a mix of ages needing different guards at the same appointment, a growing child and a parent playing weekend touch football simply don’t need the same thickness or shape.
What Happens at a Mouthguard Fitting
The process itself is quick and not something to stress about. It generally runs in three steps:
- A quick check of your teeth, mainly to confirm there’s nothing that needs attention before the impression is taken
- A mould or digital scan of your upper teeth, used to shape the guard precisely
- A follow-up visit to collect the finished mouthguard and have the fit checked
If You’re Currently in Orthodontic Treatment
If you’re mid-way through orthodontic treatment, this step matters even more. Mouthguards for patients wearing braces need extra consideration since teeth are still shifting, so it’s worth mentioning your treatment when you book. It’s also a reasonable time to bring up anything else that’s been niggling, a chipped edge, sensitivity, or a check-up that’s overdue. Many patients combine it with a regular check-up and clean rather than making a separate trip.
This article is general information and doesn’t replace an individual assessment. Mouthguard suitability depends on your specific teeth, bite, and any dental work you have, your dentist can advise on what’s right for you.
Before Season Starts: A Quick Checklist
A few things worth checking before the first training session, rather than after an injury:
- Has your mouthguard been used for more than a season or two? Material breaks down with wear.
- Does it still fit snugly, or has it gone loose or misshapen?
- Are there any visible cracks, thinning patches, or tears?
- Has your child’s mouth changed noticeably since it was made?
- Are you playing a different sport this season with different contact risk?
According to teeth.org.au, sports mouthguards work by absorbing and spreading the impact of a knock to the face, which is exactly why fit and condition matter more than people tend to assume. A mouthguard that’s technically still in one piece but no longer fits properly isn’t doing much of that job.
Storage matters too. Mouthguards left in a hot car or sports bag over summer can warp, changing the fit without anyone noticing until it’s back in use. A dry, ventilated case kept somewhere cool is a simple habit that extends how long a guard stays effective, and it’s worth checking on at the start of every season rather than assuming last year’s guard is still doing its job.
What If an Injury Happens Anyway
Even with a well-fitted mouthguard, sport carries some risk, and a knock to the mouth can still happen. According to Healthdirect Australia, treatment for a dental injury depends on what’s happened, from a knocked-out tooth to a crack or chip, and outcomes can vary depending on how quickly it’s seen to. A few general points worth knowing in the moment:
- A knocked-out adult tooth has a better chance of surviving if it’s seen to quickly
- Baby teeth aren’t put back in if knocked out
- Cracked or chipped teeth should still be checked even if they aren’t painful
If a tooth is knocked out or visibly damaged during a game, getting to a dentist promptly matters, our guide on emergency dental care covers what to do in that situation.
Frequently Asked Questions
How Long Does a Custom Mouthguard Last?
It depends on use and, for kids, how quickly their mouth is changing. Some last a full season or two, while a growing child’s mouthguard may need replacing more often. This is general guidance only, your dentist can give you a clearer estimate after checking your teeth.
Can I Still Wear a Mouthguard With Braces?
Yes, though the fit needs to account for the brackets and ongoing movement. It’s worth mentioning your orthodontic treatment when booking so the guard is made to suit. Treatment suitability depends on individual circumstances, so this isn’t a substitute for an actual consultation.
Is a Boil-and-Bite Mouthguard Good Enough?
It’s better than nothing, but it won’t fit as precisely as a custom-made one, and comfort is often what determines whether someone actually wears it during play. Results vary between individuals, and this is general information rather than a specific recommendation for your situation.
Do Adults Need Mouthguards Too, Not Just Kids?
Yes, dental injuries from sport aren’t limited to children. Adults playing contact or high-speed sports face similar risks, particularly around existing dental work. This information is general in nature and doesn’t account for your specific dental history.
What Sports Actually Need a Mouthguard?
Contact sports like rugby and hockey are the obvious ones, but sports with fast-moving balls, sticks, or falls, such as basketball, netball, or skateboarding, carry risk too. Your dentist can advise based on what’s played. This is general information only.
Get Yours Sorted Before the First Whistle
If your mouthguard has seen better days, or your child’s never had one properly fitted, it’s worth sorting out before training ramps up. All About Dental has been fitting local families across Engadine, Heathcote, and the wider Sutherland Shire for years, and a mouthguard visit fits easily alongside a regular check-up rather than requiring a separate trip. Book online and get it ticked off the list before season starts.

