My adult tooth got knocked out: what should I do right now?

Emergency care comes before the tooth

A knocked-out tooth usually happens during a fall, a collision during sports, a bicycle or car accident, or a blow to the face. The same force can injure the head, neck and jaw, and those injuries matter more than the tooth. Before you think about the tooth, check for these signs:

• Loss of consciousness, even briefly, or confusion, unusual drowsiness or repeated vomiting after the blow.
• A jaw that will not close normally, teeth that no longer meet, or severe pain when moving the jaw, which can mean a fracture.
• Trouble breathing or swallowing, or heavy bleeding that does not stop with firm, continuous pressure.
• A deep cut through the lip or cheek, or a tooth or fragment that may have been inhaled or swallowed.

Any of these means 911 or the nearest emergency department first, not a drive to a dental office. If you live in the Santa Ynez Valley or Ventura County, the nearest emergency department is the right destination for this list, not the hour on the road to Santa Barbara. Bring the tooth with you, kept moist as described below, and tell the emergency staff you have it so it can stay in milk or saline until a dentist can see you.

Why minutes matter

The root of a tooth is covered by a thin layer of living cells, the periodontal ligament, which normally anchors the tooth to the bone. When a tooth leaves its socket, those cells begin to dry and die. A tooth that is put back within a few minutes, or kept moist in a suitable liquid, keeps more of those cells alive, and the body can often re-attach the root to the socket. A tooth that dries in the open air for an extended period loses them, and even if it is replanted the root tends to be slowly replaced by bone over the following years.

This is why the first-aid advice is so specific:

• Handle the crown, not the root. Touching, scrubbing or wiping the root damages the very cells you are trying to save.
• Rinse only if dirty, and only briefly. Milk is a good rinse; a few seconds under gently running water is acceptable if nothing else is available. No soap, no disinfectant, no scrubbing.
• Replant if you can. Push the tooth gently back into the socket facing the right way, matching its neighbors, then bite softly on gauze, a folded clean cloth or a handkerchief to hold it in place. If it will not go in easily, do not force it.
• Keep it moist in milk or in the cheek. Milk is a widely available and suitable storage liquid. Saline or the person's own saliva also work; holding the tooth between the cheek and the gum is an option for an alert adult who is not at risk of swallowing it. Plain water is a poor choice because it damages the root cells, and a dry tissue or paper towel is worse.
• Go now. The American Association of Endodontists advises getting to a dentist or endodontist within about 30 minutes for the best chance of saving the tooth. If the office you normally use is far away, the nearest dentist who can see you is usually the better call.

How the 2020 guideline organizes care

The International Association of Dental Traumatology updated its guideline for knocked-out permanent teeth in 2020. It sorts cases by what happened to the tooth before the dental visit: already replanted at the scene; kept in a storage liquid with a total dry time under about 60 minutes; or dry for more than about 60 minutes. Dry time, along with how mature the root is, is one of the main factors the guideline uses to judge the outlook. Teeth with long dry storage have a poor long-term prognosis, but the guideline notes that replanting them can still be worthwhile, because the tooth may preserve bone and appearance for a time while a longer-term plan is made. That is why the advice is to bring the tooth whatever the delay, and let the dentist decide.

Which situation are you in?

Permanent teeth and baby teeth are treated differently. A knocked-out baby tooth is not replanted, because doing so can damage the adult tooth developing in the bone above it, but the child should still be seen promptly.

What usually happens at the dental visit

The description below follows what the guidelines expect; the plan for any one tooth depends on the examination and the time the tooth spent out of the mouth.

• Checking the tooth and the socket. The dentist examines the socket for broken bone, rinses it gently, and may reposition a tooth that was replanted at an angle. X-rays confirm the position and look for fractures of the root or jaw and for other injured teeth.
• A flexible splint. The replanted or repositioned tooth is usually held to its neighbors with a thin, flexible splint, typically for about two weeks for a simple knocked-out tooth (dentists call this an avulsion) and longer when bone is fractured. Guidelines prefer a flexible splint to a rigid one because slight movement helps the ligament heal.
• Root canal treatment, often. In an adult tooth whose root has finished growing, the nerve inside rarely survives the injury, and guidelines call for root canal treatment to be started within about two weeks of replantation to head off infection and root breakdown. In a young tooth with an open root tip, the dentist may instead monitor it, because the blood supply sometimes re-establishes itself.
• Tetanus and medication questions. If the tooth touched soil or the person's tetanus coverage is uncertain, the guideline recommends referral to a physician for a tetanus assessment. The dentist may also discuss antibiotics; take any medication only as directed on the label or the prescription.
• Follow-up over years, not weeks. The guideline sets checks at about two weeks, four weeks, three months, six months and one year, and then yearly for at least five years, because root breakdown can appear late and silently.

None of this is a promise of a particular result or number of visits at this practice; it describes what the published guidance expects. Ask the office how it handles dental trauma and whether some steps, such as root canal treatment, are provided in-house or by referral to an endodontist.

What to tell the office when you call

Call first, while someone else drives if possible. Say these five things:

1. What happened and when, to the minute if you can: the clock on dry time starts at the injury and stops when the tooth goes back in the socket or into milk, saline or the cheek.
2. Where the tooth is now: back in the socket, in milk, in the cheek, or dry, and for how long.
3. Other injuries: any blow to the head, loss of consciousness, cuts, or jaw pain.
4. Medical details: medications, bleeding disorders, allergies, and when your last tetanus shot was.
5. Whether it is an adult tooth or a baby tooth, and the age of the person hurt.

If the practice cannot see you quickly, ask it to recommend the nearest dentist, endodontist or emergency department that can, and go there instead; the tooth does not wait for a particular office.

Reaching the practice during listed hours

Loul Dental Studio lists emergency care among its services and is open Monday to Thursday, 8:00 am to 5:00 pm, with select Fridays by appointment. During those hours, call (805) 565-5111 and describe the injury rather than using the online form, because a request is not a confirmed appointment and the team follows up later. This guide does not describe after-hours arrangements; check the practice's contact page or ask the office. Outside listed hours, use the red-flag list above and seek the nearest available dental or emergency care without waiting. If you are driving in, the practice has one office at the east end of the Santa Barbara waterfront, and the guide to getting here describes routes from nearby towns.

The next step

Once the tooth is stabilized, the work shifts to protecting it. Keep the follow-up appointments, avoid biting on the tooth while the splint is on, keep the area clean with a soft brush and any rinse the dentist suggests, and report any new pain, color change, swelling or looseness promptly. Related guides cover what to tell a dentist about tooth pain and when facial swelling needs emergency medical care first. For other listed services, see the services page.