Knocked-Out Tooth: What to Do Right Away

A permanent tooth that has been completely knocked out of its socket is a time-sensitive dental injury. What happens in the first minutes can affect whether the tooth can be replanted successfully.

The American Association of Endodontists (AAE) advises acting quickly, handling the tooth by the crown rather than the root, keeping it moist, and seeing a dentist or endodontist as soon as possible—ideally within about 30 minutes. AAE: Knocked-Out Teeth

This guidance applies to an adult or permanent tooth. A primary or baby tooth is managed differently and should not be replanted by a parent or caregiver without professional direction. If you are unsure whether the tooth is permanent, call a dentist immediately.

Step 1: Find the tooth and pick it up by the crown

The crown is the part you normally see in the mouth and chew with. Avoid touching the root, the part that was inside the socket.

The AAE recommends handling a knocked-out tooth carefully by the crown because cells on the root surface are important to the possibility of replantation. AAE: Knocked-Out Teeth

Do not scrape, brush, or scrub the root even if it looks dirty.

Step 2: If it is dirty, rinse it gently with water

The AAE advises using water to gently rinse away dirt. Do not use soap, chemicals, alcohol, disinfectant, or a toothbrush, and do not dry the tooth. AAE: Knocked-Out Teeth

The goal is to remove obvious debris without damaging the root surface.

Step 3: Reposition the permanent tooth if you can do so safely

For a knocked-out permanent tooth, the AAE recommends putting it back into the socket as soon as possible when this can be done safely. Hold it by the crown, orient it correctly, gently place it into the socket, and hold it in position.

Do not force a tooth into place if you are uncertain about orientation, if there is significant facial injury, or if doing so would be unsafe. Keep the tooth moist and go directly for professional care.

Again, do not replant a baby tooth on your own.

Step 4: If it cannot be replanted, keep it moist

The tooth should not be allowed to dry out. The AAE lists milk, placement in the mouth beside the cheek when appropriate, or an emergency tooth-preservation product as options when immediate reinsertion is not possible. It advises against storing the tooth in plain tap water for an extended time. AAE: Knocked-Out Teeth

For a young child, unconscious person, or anyone at risk of swallowing or aspirating the tooth, do not place it loose inside the mouth. Use a safer transport method and seek professional care.

Step 5: Get dental care immediately

Time matters. The AAE recommends seeing a dentist or endodontist within about 30 minutes when possible, while also noting that some teeth may still be saved after longer periods. AAE: Knocked-Out Teeth

Call the dental office while you are on the way if possible so the team knows you are coming and can direct you appropriately.

If the injury also involves loss of consciousness, severe facial trauma, uncontrolled bleeding, suspected jaw fracture, difficulty breathing, or another medical emergency, emergency medical care takes priority.

What not to do with a knocked-out tooth

Avoid common mistakes that can reduce the chance of successful replantation:

• Do not touch or scrub the root.
• Do not dry the tooth.
• Do not wrap it in a tissue or cloth and leave it dry.
• Do not use soap, bleach, alcohol, or household disinfectants.
• Do not delay care while waiting to see whether pain improves.
• Do not attempt to replant a baby tooth yourself.

What happens at the dental office?

The dentist will evaluate the tooth, socket, nearby teeth, soft tissues, and possible facial injuries. Dental imaging may be needed to check for root fractures, bone injury, or damage to neighboring teeth.

If replantation is appropriate, the tooth may be positioned back in the socket and stabilized. Follow-up is important because a replanted tooth may require additional treatment and monitoring as it heals.

The AAE’s guidance on traumatic dental injuries emphasizes that dental trauma can affect the pulp and supporting tissues even when damage is not immediately obvious. AAE: Traumatic Dental Injuries

What if the tooth is chipped or cracked but not knocked out?

A tooth that remains in the mouth needs a different plan. Save any broken pieces when practical, rinse the mouth gently, and contact the dentist.

Our chipped or cracked tooth guide explains common signs and why cracks should be evaluated rather than diagnosed from appearance alone.

Can a mouthguard prevent this kind of injury?

No protective device can prevent every dental injury, but a properly fitted sports mouthguard can reduce the risk of trauma during contact and collision activities. Read our sports mouthguard guide and review Gateway Dental’s mouth guards service if sports protection is relevant to you or your child.

Keep this emergency checklist in mind

For a knocked-out permanent tooth:

1. Pick it up by the crown.
2. Rinse gently with water if dirty—do not scrub.
3. Reinsert it if this can be done safely.
4. Otherwise keep it moist.
5. Get dental care immediately.

Gateway Dental serves patients from our Coral Way and Hialeah offices. This article is for general education and is not a substitute for urgent professional instructions during an active injury. If a tooth has just been knocked out, call a dental professional now rather than continuing to research the situation online.