If your child knocks out an adult tooth, pick it up by the crown, rinse it for a few seconds in milk, and either push it back into the socket or keep it in a cup of milk, then get to a dentist within 30 to 60 minutes. A knocked-out permanent tooth is a true dental emergency. A knocked-out baby tooth is less serious and should never be put back in, but it still needs a check.
First 5 minutes, adult tooth:
- Stay calm and find the tooth.
- Hold it by the white crown, never the root.
- If it’s dirty, rinse for 10 seconds in milk or saline. Don’t scrub.
- Put it back in the socket if your child will let you, and have them bite on a clean cloth.
- If that isn’t possible, keep it in milk and head to the dentist.
It usually happens fast. A hockey stick at the rink, a slip off the monkey bars, a collision in a backyard soccer game. Parents in Barrie see a lot of these in winter, and most of them could have been softened by a properly fitted sports mouth guard.
Speed matters more than anything else here. The cells on the root surface start dying within minutes when they dry out, so call a dental clinic in Barrie while you’re on your way rather than after you arrive.
A tooth that goes back in place often needs follow-up care over the next few weeks. In many cases that includes root canal treatment to protect the tooth from infection, along with a series of checkups and X-rays.
And for the long run, regular preventive dental visits let your dentist keep an eye on the injured tooth and the ones around it. If you need to get in quickly, you can book through our website or call us directly.
Is it a baby tooth or an adult tooth?
This is the first thing to figure out, because the steps are completely different.
Children usually have all 20 baby teeth by about age 3. The first adult teeth, often the lower front teeth and the 6-year molars, appear around ages 6 to 7. By 12 or 13, most kids have lost all their baby teeth.
| Question | Baby (primary) tooth | Adult (permanent) tooth |
|---|---|---|
| Typical age | Under about 6 | About 6 and older, depending on the tooth |
| Put it back in? | No, it can damage the adult tooth underneath | Yes, as soon as possible |
| How urgent? | See a dentist the same day or next day | See a dentist within 30 to 60 minutes |
| Main goal | Check for injury to gums and the developing tooth | Save the tooth |
Not sure? Treat it like an adult tooth, keep it in milk and call the dentist. They’ll sort it out.
How do you save a knocked-out adult tooth?
Here’s the full process, in order.
- Find the tooth. Check the ground, the ice, the grass. A small piece of tooth is also worth bringing.
- Pick it up by the crown. That’s the shiny white part you see in the mouth. The root has living cells that help it reattach, and fingers damage them.
- Rinse gently only if it’s dirty. Use milk or saline for about 10 seconds. Don’t scrub, wipe or wrap it in a tissue.
- Try to put it back. Line it up the right way round and press it gently into the socket. Have your child bite down on a clean cloth or gauze to hold it.
- If it won’t go back, store it properly. Milk is the best choice for most families. An older child can hold it inside their cheek, but younger kids might swallow it.
- Get to a dentist fast. Teeth replanted within about 30 minutes have the best chance of long-term survival.
What’s the best way to store a knocked-out tooth?
| Storage option | How good is it? | Notes |
|---|---|---|
| Back in the socket | Best | Natural environment for the root cells |
| Tooth preservation kit (like Save-a-Tooth) | Very good | Worth keeping in a sports bag |
| Cold milk | Good | Easy to find and keeps cells alive for a while |
| Saline solution | Fair | Better than dry, for short periods |
| Saliva (inside the cheek) | Fair | Only for older kids who won’t swallow it |
| Tap water | Poor | Water makes root cells swell and burst |
| Dry in a tissue or pocket | Worst | Root cells die quickly |
What should you do if a baby tooth gets knocked out?
Don’t put a baby tooth back. The root of a primary tooth sits right on top of the developing adult tooth, and pushing it back in can damage that adult tooth or cause infection.
Instead:
- Press a clean, damp cloth on the gum for 10 minutes to stop the bleeding.
- Give a cold compress on the lip to reduce swelling.
- Offer soft food and cool drinks for the rest of the day.
- Book a dental visit within a day or so to check the area and the other teeth.
Losing a front baby tooth early usually doesn’t cause problems with spacing. Losing a back baby tooth early sometimes does, and your dentist may suggest a space maintainer.
Get emergency medical care first if your child lost consciousness, seems confused, vomits, has a possible jaw fracture or won’t stop bleeding. Head injuries come before teeth. This article is general guidance and doesn’t replace care from a licensed dentist or physician.
What happens at the dentist after a tooth is knocked out?
When you arrive, the dentist works quickly but carefully.
- Exam and X-rays. We check the socket, the surrounding bone and any other injured teeth.
- Cleaning and replanting. If the tooth is out, the dentist rinses it and places it back in the socket. If you already replanted it, we check the position.
- Splinting. A thin, flexible wire is bonded to the injured tooth and its neighbours for about 2 weeks so it can reattach.
- Medication. Antibiotics may be prescribed, and we’ll check whether a tetanus booster is needed if the tooth touched soil.
- Root canal planning. For teeth with fully formed roots, root canal treatment usually starts within 1 to 2 weeks. Young teeth with open roots are sometimes watched instead, since they may heal on their own.
- Follow-up visits. Expect checks at around 2 weeks, 4 weeks, 3 months, 6 months and 1 year, then yearly for a while.
What if the tooth is chipped or pushed out of place instead?
Not every injury knocks a tooth fully out. Sometimes it’s chipped, loosened, pushed back, or driven up into the gum.
- Chipped tooth: save the broken piece in milk. The dentist can sometimes bond it back on.
- Loose tooth: keep your child eating soft food and see the dentist the same day. A splint may be needed.
- Tooth pushed out of line: don’t force it back. Get to the dentist quickly so it can be repositioned under freezing.
- Tooth pushed up into the gum: this is called intrusion and needs a dental exam and X-ray right away.
Any tooth that turns grey, pink or yellow in the weeks after an injury should be checked too, since that can mean the nerve has been damaged.
What should go in a dental first aid kit for sports?
If your child plays contact sports, a small kit in the hockey bag can save a tooth. Keep these together:
- A tooth preservation kit or a small sealed container you can fill with milk
- Sterile gauze pads
- A small cold pack
- Disposable gloves
- Your dentist’s phone number saved in your phone
Can a knocked-out tooth always be saved?
Not always. The odds depend mostly on time and storage.
- Replanted within 30 minutes: good chance of long-term survival
- Kept in milk and replanted within an hour: reasonable chance
- Dry for more than 60 minutes: the tooth may still be replanted, but it’s more likely to fuse to the bone or be lost over time
Even a tooth that’s eventually lost can be kept in place for years. For a growing child, that matters, because it holds the space and helps preserve the bone until a permanent replacement is possible after growth finishes.
How can you prevent knocked-out teeth in kids?
Most sports-related tooth injuries happen to kids who weren’t wearing a mouth guard. Hockey, lacrosse, basketball, soccer, rugby, martial arts and skateboarding are the usual suspects.
| Type of guard | Fit | Protection | Comfort |
|---|---|---|---|
| Stock (ready-made) | Loose | Basic | Bulky, hard to talk or breathe |
| Boil-and-bite | Moderate | Fair | Okay, can thin out where bitten |
| Custom sports guard | Exact | Best | Thin and stable, easier to wear the whole game |
Kids actually wear guards that feel comfortable. That’s the biggest argument for a custom one. Growing children may need a new guard every season or two as their teeth change.
What are the common myths about knocked-out teeth?
- Myth: you should clean the tooth well before bringing it in. Scrubbing kills the root cells that help it reattach. A quick rinse in milk is all it needs.
- Myth: water is fine for storing a tooth. Tap water damages root cells within minutes. Milk is much better.
- Myth: a replanted tooth is fixed for good. It needs a splint, follow-up X-rays and often a root canal to stay healthy.
- Myth: baby teeth don’t matter because they fall out anyway. They hold space for adult teeth and help kids chew and speak. Injuries to them still need a check.
Where can Barrie families get help for a knocked-out tooth?
Ardagh Family Dentistry is a family dentist in Barrie at 225 Ferndale Dr. S., Unit 7, in Circle K Plaza in the Ardagh Bluffs area. Our wheelchair-accessible clinic sees kids, teens and adults, so the whole family can come to one place.
When a tooth is knocked out, call us right away at +1 705-315-0219. We respond quickly and will tell you exactly what to do on the way in. If you need an emergency dental clinic in Barrie, our team will make room or guide you to the fastest option.
We welcome new patients and CDCP (Canadian Dental Care Plan) patients. Scared kids (and parents) can have dentistry with nitrous oxide, which helps them stay calm in the chair.
Our services cover preventive care, sealants, digital radiography, cleanings, custom sport guards, extractions, root canals, teeth whitening, dentures, crowns, bridges and night guards. All of our dentists are registered with the Royal College of Dental Surgeons of Ontario (RCDSO). You can also email info@ardagh.ca with any non-urgent questions.
Frequently asked questions
How long do you have to save a knocked-out tooth?
The best results come when an adult tooth is replanted within 30 minutes. Teeth stored in milk can still do well if seen within about an hour. After that, the chance of saving the tooth long term drops.
Should I put a knocked-out baby tooth back in?
No. Replanting a baby tooth can damage the adult tooth developing underneath. Control the bleeding and book a dental check within a day.
Is milk really the best way to store a knocked-out tooth?
For most families, yes. Cold milk keeps root cells alive much longer than water or air. A special tooth preservation kit works even better if you have one.
Will a replanted tooth need a root canal?
Most adult teeth with fully formed roots do, usually within 1 to 2 weeks. Young teeth with immature roots are sometimes monitored instead, because they can occasionally heal on their own.
Does my child need a mouth guard for hockey?
Yes. Hockey has a high rate of dental injuries, and a well-fitted mouth guard lowers the risk of knocked-out and broken teeth. A custom guard fits better and is more likely to stay in.
Conclusion
For a knocked-out adult tooth, handle it by the crown, keep it moist in milk or in the socket, and see a dentist within the hour.
Baby teeth should never be replanted, but your child still needs a dental check after the injury.
A well-fitted sports guard is the simplest way to prevent this kind of emergency in the first place.
