How to Handle a Knocked-Out Tooth Before Getting to a Dentist
By Aurora Gateway Dental Care · Published June 4, 2026 · Updated November 12, 2026 · Reviewed by our dentists
The short answer
If an adult tooth is knocked out, pick it up by the crown, not the root. Rinse it briefly if it is dirty, then gently push it back into the socket. If that isn't possible, keep it in milk or saliva. In Aurora, call Aurora Gateway Dental Care right away at (289) 475-5497.
Why the first few minutes matter
When a tooth is knocked out of its socket, dentists call it an avulsed tooth. The root is covered in a thin layer of living cells. Those cells help the tooth reattach to the bone if it goes back in.
Outside the mouth, those cells start to dry out and die within minutes. That is why speed, and keeping the tooth wet, make such a difference. The Canadian Dental Association notes that a tooth put back within about 10 minutes has a better chance. Even if more time has passed, bring the tooth and get help. Your dentist can tell you what is still possible.
First aid for a knocked-out adult tooth
These steps are for adult teeth only. If the tooth is a baby tooth, skip to the next section.
- Find the tooth. Pick it up by the crown, the white part you see when someone smiles. Do not touch the root.
- If it is dirty, rinse it for a few seconds with milk or a quick splash of cold water. Do not scrub it, dry it, wrap it in tissue or clean it with soap or alcohol.
- Try to slide it back into the socket, facing the right way. Push gently with your fingers.
- Once it is in, bite softly on a clean cloth or gauze to hold it in place.
- Call a dentist right away. Bring the person in even if the tooth went back easily.
If the tooth won't go back in
Don't force it. Instead, keep the tooth moist on the way to the dentist. A dry tooth is much harder to save.
Good choices are a small container of cold milk, or the person's own saliva spit into a cup. A tooth-saving kit from a pharmacy also works if you already have one. An adult who is calm and alert can hold the tooth inside the cheek, next to the gums. Do not ask a young child to do this, because they could swallow it.
Avoid plain tap water for storage. Soaking the root in water for a long time can damage the cells it needs to heal.
If it is a baby tooth
Do not put a knocked-out baby tooth back in. The adult tooth is growing just above it, and pushing the baby tooth into the socket could harm it.
Have your child rinse with water and press a clean cloth on the gum to stop bleeding. Then call us. We will check the gum, the nearby teeth and the adult tooth underneath. We see children from their very first visit, so a scared child is in familiar hands.
When to call us and when to call 911
For a knocked-out or loosened tooth, call Aurora Gateway Dental Care at (289) 475-5497. If we're closed, follow the instructions on our line. Let us know how the injury happened and how long ago, so we can guide you.
Some injuries need a hospital first. Call 911 or go to the emergency department if any of these happen:
- Swelling that makes it hard to breathe or swallow
- Bleeding that does not slow after 10 minutes of firm pressure
- A possible broken jaw, or a jaw that will not close normally
- A head injury, fainting, vomiting or confusion
What happens at the dental visit
Your dentist will look at the tooth, the socket, the gums and your bite. An X-ray shows whether the root or bone is hurt. If the tooth is back in place, or can be put back, the dentist may attach it to the teeth beside it with a thin splint for a short time while it settles.
Teeth that were knocked out often need follow-up visits over the next months. The nerve inside may not survive, and some teeth later need root canal treatment. A tetanus shot may also be advised if the tooth touched soil. We will explain each step and what to watch for at home.
If the tooth can't be saved
Sometimes a tooth can't be kept, even when everyone acts fast. How long it was out, how it was stored and how badly the root and bone were hurt all play a part.
If that happens, there are ways to fill the space, such as a bridge, a dental implant or a removable partial denture. For teens, the timing depends on growth. Your dentist will go over the choices, the pros and cons, and a written estimate before anything is done.
Lowering the risk of a knocked-out tooth
Most of these injuries happen during sports, play or falls. A mouthguard is one of the simplest ways to protect teeth in hockey, basketball, soccer, martial arts and biking. Store-bought guards help. A custom guard made from a scan or mould of the teeth usually fits more closely and is easier to wear.
Seatbelts and proper car seats protect teeth too. If your child's upper front teeth stick out a lot, ask about it at their next checkup, since those teeth are more likely to be hit.
Questions
How should I pick up a knocked-out tooth?
Hold it by the crown, the part that shows in the mouth. Never hold it by the root, because the cells on the root help it reattach. Handle it as little as you can.
Is milk really better than water?
Yes, for storing the tooth. Milk, saliva or a tooth-saving solution keep the root cells alive longer than water. A quick rinse in cold water to remove dirt is fine, but don't leave the tooth sitting in it.
Should I put my child's baby tooth back in?
No. A knocked-out baby tooth should not be put back, because it could damage the adult tooth forming above it. Stop the bleeding with gentle pressure and call your dentist so they can check for other injuries.
What if I find the tooth hours later?
Keep it in milk or saliva and bring it in anyway. The chances are lower after a long time, but your dentist can still check the socket and nearby teeth and talk about next steps. Never assume it is too late to call.
General information, not personal medical advice. If you have pain, swelling or an injury, call us at (289) 475-5497.
