If an adult tooth gets knocked out, pick it up by the crown (the white part), gently rinse it without scrubbing, try to place it back in the socket, and get to a dentist within 30 to 60 minutes. If you cannot reinsert it, keep the tooth moist in milk or in your cheek. A knocked-out permanent tooth is a true dental emergency, and fast action gives the best chance of saving it, so call an emergency dental treatment provider immediately.
Knocked-out teeth, called avulsed teeth by dentists, most often happen during sports, falls, bike accidents and car collisions. They are frightening, but they are not hopeless. A tooth that is replanted quickly can reattach and last for years, sometimes for life. Having a trusted dental clinic in Concord already in mind means you will not lose precious minutes searching when an accident happens.
A replanted tooth usually needs follow-up care, because the nerve inside rarely survives in adult teeth. That is why root canal treatment is commonly scheduled within one to two weeks after replantation.
If a tooth cannot be saved, dental implants provide a strong, natural-looking replacement. Families concerned about coverage can review our CDCP dental services page to learn how the Canadian Dental Care Plan can help.
What Is a Knocked-Out Tooth?
A knocked-out or avulsed tooth is one that has been completely displaced from its socket, root and all. The tooth is held in the jaw by the periodontal ligament, a layer of tiny fibres that attach the root to the bone. When a tooth is knocked out, some of these fibres stay on the root surface. Those cells are alive for a short time, and keeping them alive is the key to successful replantation. Once they dry out, they die, and the chances of the tooth reattaching drop sharply.
Why Time Matters So Much
| Time Out of Mouth (dry) | Chance of Long-Term Success |
|---|---|
| Replanted within 5 minutes | Best possible outcome |
| Within 30 minutes | Good |
| 30 to 60 minutes | Reduced, but still worth trying |
| More than 60 minutes dry | Poor, ligament cells usually dead |
Storing the tooth in milk or saliva slows cell death significantly, which is why the storage method can matter almost as much as speed.
What to Do Immediately: Step by Step
- Find the tooth. Stay calm and locate the tooth quickly.
- Hold it by the crown only. Never touch the root, as this damages the living cells.
- Rinse briefly if dirty. Use milk or saline, or plain water for no more than 10 seconds. Do not scrub, dry, or wrap it in tissue.
- Try to replant it. Gently push the tooth back into the socket facing the correct way. Bite softly on a clean cloth or gauze to hold it in place.
- If you cannot replant it, store it properly. Place it in a small container of cold milk, a tooth preservation kit, or saline. An adult can hold it inside the cheek. Never store it in tap water.
- Control bleeding. Press clean gauze on the socket if the tooth is not replanted.
- Get to a dentist right away. Aim to be seen within 30 to 60 minutes.
- Bring any broken pieces and tell the dentist what happened and how long the tooth was out.
Best and Worst Ways to Store a Knocked-Out Tooth
| Storage Method | Effectiveness |
|---|---|
| Back in the socket | Best |
| Tooth preservation kit (balanced salt solution) | Excellent |
| Cold milk | Very good |
| Inside the cheek (adults only) | Good |
| Saline | Good for short periods |
| Tap water | Poor, damages root cells |
| Dry, in tissue or a pocket | Worst |
What If It Is a Baby Tooth?
Do not try to put a knocked-out baby tooth back in. Replanting a primary tooth can damage the developing adult tooth underneath. Instead, control bleeding with gauze, comfort your child, and call your dentist. The dentist will check for injury to the gums, bone and adult tooth bud, and discuss whether a space maintainer is needed.
What Happens at the Dental Office?
- Assessment: The dentist checks for other injuries, including the jaw, lips and nearby teeth.
- Cleaning and replantation: If the tooth was not already replanted, the socket is gently rinsed and the tooth is placed back.
- Splinting: A flexible splint bonds the tooth to its neighbours for about two weeks while the ligament reattaches.
- X-rays: Confirm the tooth is correctly positioned and check for fractures.
- Medications: Antibiotics may be prescribed, and a tetanus booster may be recommended if the tooth contacted soil.
- Root canal planning: For adult teeth with fully formed roots, root canal treatment usually begins within 7 to 14 days.
- Follow-up visits: Regular checks over the next year monitor healing and watch for root resorption.
Possible Outcomes After Replantation
- Successful reattachment: The tooth stabilizes and functions normally.
- Replacement resorption (ankylosis): The root slowly fuses with bone and is gradually replaced. The tooth may last many years before needing replacement.
- Inflammatory resorption: Infection causes rapid root breakdown, which is why timely root canal treatment is important.
- Loss of the tooth: If replantation fails, replacement options include implants, bridges or partial dentures.
Replacement Options If the Tooth Cannot Be Saved
| Option | Benefits | Considerations |
|---|---|---|
| Dental implant | Most natural feel, preserves bone | Not suitable until jaw growth is complete |
| Bridge | Fixed, non-surgical | Neighbouring teeth are prepared |
| Partial denture | Conservative, quick option | Removable |
| Resin-bonded bridge | Minimal tooth preparation, useful for teens | Can debond over time |
Myths About Dental Emergencies and Pain
Myth: A knocked-out tooth cannot be saved
Many replanted teeth survive for years when handled correctly and treated quickly.
Myth: You should clean the tooth thoroughly with soap
Scrubbing or using soap destroys the living cells on the root. A brief, gentle rinse is enough.
Myth: Emergency dental treatment is always very painful
Modern local anesthetics make replantation and splinting comfortable. Fear of pain should never delay care, because delay is what reduces the chance of saving the tooth.
Myth: If it does not hurt afterward, follow-up is not needed
Problems like root resorption are often painless. Regular follow-up X-rays are essential.
Real Patient Scenarios
The hockey game
A teenager lost a front tooth when an elbow caught him during a game. His coach placed the tooth in a carton of milk from the snack bar, and he was seen within 40 minutes. The tooth was replanted and splinted, and root canal treatment followed. Two years later it remains stable.
The weekend bike fall
An adult wrapped her knocked-out tooth in a tissue and waited until the next morning. The root cells had dried out, and the tooth could not reattach. She later received an implant.
The toddler’s tumble
A three-year-old knocked out a front baby tooth. The parents did not replant it and called right away. The dentist confirmed no damage to the developing adult tooth.
Common Mistakes
- Holding the tooth by the root
- Letting the tooth dry out
- Storing it in tap water
- Waiting until the next day to seek care
- Replanting a baby tooth
- Skipping follow-up appointments
How to Prevent Knocked-Out Teeth
- Wear a custom-fitted mouthguard for hockey, soccer, basketball, martial arts and skateboarding.
- Use car seats and seatbelts correctly.
- Childproof homes to reduce falls for toddlers.
- Avoid using teeth as tools.
- Keep a tooth preservation kit in your sports bag or first-aid kit.
Emergency and Family Dental Care in Concord
Smart Care Dental is a trusted dentist in Concord serving Concord and Vaughan, ON, with a complete range of family, cosmetic and restorative dentistry. As an emergency dental clinic in Concord, our team does its best to offer same-day or urgent appointments for injuries like knocked-out teeth. Our extended evening and weekend hours are designed for busy families, so help is easier to reach when accidents happen outside regular office times.
We welcome new patients and accept CDCP (Canadian Dental Care Plan) patients. Smart Care Dental is also a Certified Invisalign provider for patients who want to straighten teeth with clear aligners. To reach our team, call +1 905-738-4970, email info@smartcaredental.ca, or visit https://smartcaredental.ca/.
Dental trauma should always be treated by licensed professionals. Dentists practising in Ontario are registered with the Royal College of Dental Surgeons of Ontario (RCDSO), which sets the standards for safe diagnosis, treatment and follow-up care.
Disclaimer: This article provides general first aid guidance and does not replace professional care. If there is a head injury, loss of consciousness or uncontrolled bleeding, go to a hospital emergency department first.
Other Types of Tooth Injuries and How Urgent They Are
Not every dental injury knocks a tooth out completely. Knowing the differences helps you respond correctly.
Luxated (Displaced) Tooth
The tooth is still in the socket but has been pushed sideways, outward or into the gum. This needs same-day care so the dentist can reposition and splint it while the tissues are still flexible.
Intruded Tooth
The tooth has been driven up into the bone and looks shorter than its neighbours. In adults, this often requires gradual repositioning and close monitoring of the nerve.
Loosened Tooth (Subluxation)
The tooth is in the right place but wobbles and feels tender. It may need a short splint and soft diet, plus follow-up to check the nerve.
Fractured Tooth
Part of the crown has broken. Bring any fragments in milk or water, as they can sometimes be bonded back.
| Injury | Urgency |
|---|---|
| Knocked-out adult tooth | Immediate, within 30 to 60 minutes |
| Displaced or intruded tooth | Same day |
| Fractured tooth with pain or bleeding from the centre | Same day |
| Small chip with no pain | Within a few days |
Caring for a Replanted Tooth at Home
- Eat a soft diet for one to two weeks and avoid biting into food with the injured tooth.
- Brush gently with a soft toothbrush after every meal to keep the area clean.
- Use an antibacterial mouth rinse if your dentist recommends one.
- Avoid contact sports until the dentist confirms the tooth is stable.
- Report increasing pain, swelling, a gum bump or darkening of the tooth promptly.
Healing continues for months after the injury, even when the tooth feels normal. Keeping every scheduled follow-up, often at several weeks, a few months and one year, lets your dentist catch silent changes like root resorption early, when they are easier to manage.
Frequently Asked Questions
Can a knocked-out tooth be saved after an hour?
The chances are lower after 60 minutes, especially if the tooth was dry. If it was stored in milk or saliva, it may still be worth replanting, so seek care immediately.
Should I put a knocked-out baby tooth back in?
No. Replanting a baby tooth can harm the developing adult tooth. Call your dentist for an assessment instead.
Does replanting a tooth hurt?
Local anesthetic is used during replantation and splinting, so most patients feel pressure rather than pain.
How long will a splint stay on?
A flexible splint usually stays in place for about two weeks, longer if there is a bone fracture.
Will my replanted tooth need a root canal?
Most adult teeth with fully developed roots need root canal treatment because the nerve rarely survives the injury.
Conclusion
A knocked-out adult tooth is a dental emergency that needs care within 30 to 60 minutes.
Handle it by the crown, keep it moist in milk or saliva, and try to replant it if you can.
Quick action and proper follow-up give the best chance of keeping your natural tooth.