Dental Injuries & Knocked-Out Teeth
Time-critical first aid for dental trauma, and how prompt endodontic care may help save an injured tooth.
Medically reviewed by Dr. Craig Wm. Anderson, DDS — endodontic specialist · Updated July 2026
Knocked-Out Tooth? Call Now
A knocked-out permanent tooth is a true dental emergency. Seek care immediately, the sooner the tooth is treated, the better the chance of saving it. Keep it moist in milk or saliva and call us right away.
Understanding Dental Trauma
Dental injuries happen for many reasons, from sports and falls to accidents and biting into something hard. They range from minor to urgent, and it is not always obvious at first how serious an injury is. When in doubt, it is safer to have the tooth evaluated. An endodontist has specialized training in diagnosing and treating injuries that affect the inside of the tooth.
Common Types of Dental Trauma
Chipped or fractured teeth
The most common dental injuries. Many minor chips can be repaired, while larger fractures that reach the inner tooth may need more involved care.
Dislodged (luxated) teeth
A tooth that is pushed sideways, into, or out of its socket. Prompt repositioning and stabilization by a dentist may help it heal.
Knocked-out (avulsed) teeth
A permanent tooth that comes completely out of the socket. This is time-critical, and quick action offers the best chance of saving it.
Root fractures
A crack that involves the root beneath the gum. These are not always visible and may need imaging to diagnose and a plan to monitor healing.
First Aid for a Knocked-Out Permanent Tooth
This is time-critical. The steps below are general first-aid guidance to follow on the way to seeing a dentist, and the best outcomes are typically when the tooth is replaced quickly.
- 1
Pick it up by the crown
Handle the tooth by the chewing surface, never by the root. Touching the root can damage the delicate cells that help it reattach.
- 2
Rinse gently only if dirty
If the tooth is dirty, rinse it briefly with milk or water. Do not scrub it, and do not remove any attached tissue.
- 3
Try to reinsert it
If possible, ease the tooth back into its socket in the correct orientation and hold it gently in place, biting softly on a clean cloth.
- 4
Otherwise, keep it moist
If you cannot reinsert it, keep the tooth moist in milk, or in the person's own saliva by holding it inside the cheek. Do not store it in plain water.
- 5
Get care immediately
See an endodontist or emergency dentist right away. Bring the tooth with you. Faster treatment offers the best chance of saving it.
Keep the tooth moist in milk or saliva, never plain water, until it can be treated. A knocked-out tooth that dries out is harder to save.
Why prompt care matters
With trauma, timing can influence the outcome. Rapid evaluation may improve the chance of saving a tooth, allows any pain or infection to be addressed, and lets us begin monitoring how the tooth heals. Even injuries that look minor can involve the inner tooth, so a prompt exam is worthwhile.
How endodontists treat trauma
Care may include repositioning and splinting a loosened tooth to stabilize it, root canal therapy when the pulp is affected, and following the tooth over time to confirm it is healing. When it is indicated, 3D imaging may help clarify the extent of an injury or a root fracture.
Injuries to Children and Baby Teeth
Injuries to primary, or baby, teeth are handled differently from permanent teeth. As a general rule, a knocked-out baby tooth should not be reinserted, because doing so may risk harming the developing permanent tooth beneath it. Even so, a child's dental injury deserves prompt evaluation, so contact a dentist to determine the right care for your child's specific situation.
Trauma Care in Santa Rosa
We care for patients with dental trauma throughout Santa Rosa and the surrounding Sonoma County communities, and we coordinate with your general dentist on follow-up when needed.
This information is educational and does not replace individualized dental advice. In a serious emergency, seek care immediately.
Frequently Asked Questions
What should I do if my tooth gets knocked out?
For a knocked-out permanent tooth, act quickly. Pick the tooth up by the crown, the part you normally chew with, and avoid touching the root. If it is dirty, rinse it gently with milk or water for a few seconds without scrubbing or removing any attached tissue. If you can, try to place it back into the socket and hold it gently in position. If reinserting is not possible, keep the tooth moist in milk, or in the person's own saliva by tucking it inside the cheek, and get to an endodontist or emergency dentist right away. Do not store the tooth in plain water. This is general first-aid guidance, and being seen as soon as possible matters.
Can a knocked-out tooth be saved?
Sometimes, yes. A knocked-out permanent tooth can often be saved when it is handled carefully and replaced into the socket quickly, ideally within a short window after the injury. Keeping the tooth moist in milk or saliva and avoiding contact with the root help protect the delicate cells on its surface. Outcomes vary with the individual situation, the condition of the tooth, and how fast care is received, so no result can be guaranteed. Even so, prompt professional care gives the best chance of a favorable outcome.
How long do I have to save a knocked-out tooth?
Time is critical. The best outcomes are generally associated with replacing the tooth as soon as possible, and sooner is better. Keeping the tooth moist in milk or the person's saliva while you travel can help if it cannot be reinserted immediately. Rather than waiting to see whether symptoms settle, treat a knocked-out permanent tooth as an emergency and seek care right away.
What should I do for a chipped or cracked tooth?
Rinse your mouth gently with warm water to keep the area clean, and use a cold compress on the outside of the cheek to ease any swelling. If you can find a broken fragment, keep it moist and bring it with you. Avoid chewing on the affected side and contact a dentist promptly, since even a chip that seems minor can involve the inner tooth and may need evaluation. Our page on cracked teeth explains the different types of cracks and how they are managed.
Will I need a root canal after a dental injury?
It depends on the injury and whether the inner tissue, called the pulp, has been affected. Some injuries heal with monitoring and no further treatment, while others, particularly when the pulp is damaged or the tooth is knocked out, may require root canal therapy to save the tooth. An endodontist typically examines the tooth, may use imaging, and follows healing over time before deciding. The goal is always to preserve your natural tooth when it is possible to do so.
Sources
First-aid guidance on this page reflects patient education from the American Association of Endodontists (AAE) on traumatic dental injuries. It is general information and does not replace an in-person evaluation.
American Association of Endodontists — Traumatic Dental InjuriesRelated Patient Resources
Injured a Tooth? Don't Wait
For a knocked-out or badly injured tooth, quick care gives the best chance of saving it. Call us now.