What to Do When a Tooth Gets Knocked Out

A knocked-out tooth is one of the few genuine dental emergencies where minutes truly matter. Whether it happened during a soccer game, a fall, or a collision, you have a window of roughly 30 to 60 minutes to act before the chances of saving the tooth drop sharply. Most people do not know what to do. This post tells you exactly.

Time Is the Critical Factor

When a tooth is knocked out (the clinical term is avulsed), the cells on the root surface begin to die quickly once they are exposed to air. If those cells remain viable when a dentist reimplants the tooth, the body can reattach the root to the jawbone. If they have died, reimplantation will fail.

The window is not infinite, but it is real. Many avulsed teeth reimplanted within 30 minutes survive long-term. That number drops significantly after an hour. What you do in the next few minutes matters more than almost anything else.

Step 1: Handle the Tooth Correctly

Pick it up by the crown, the white part you see in the mouth, not by the root. The root has a thin layer of cells called the periodontal ligament that the jawbone needs in order to reconnect. Touching the root can damage or kill those cells.

If the tooth is dirty, rinse it briefly and gently under cold water. Do not scrub it. Do not use soap. Do not dry it or wrap it in a tissue.

Step 2: Keep the Tooth Alive

Your goal now is to keep the tooth moist and protect those root cells until you reach a dentist. Here are your options, in order of preference:

1. Put it back in the socket. If the patient is an adult and is calm and conscious, gently seat the tooth back in the empty socket and hold it in place by biting softly on a clean cloth or gauze. This is the best option by far.

2. Hold it between cheek and gum. If reinserting is not possible, the patient can keep the tooth in their mouth between the cheek and gum. Saliva keeps root cells viable. Not suitable for young children who could swallow it.

3. Store it in milk. Whole or 2% milk is a good emergency storage medium. Do not use water, which damages root cells quickly.

4. Use a tooth-preservation kit. Products like Save-a-Tooth contain a balanced salt solution that is the clinical gold standard for preserving root cells. Available at some pharmacies.

Do not store the tooth in water and do not wrap it in a dry tissue or cloth. Both will cause the cells to die before you reach the dentist.

Step 3: Get to a Dentist Immediately

Call your dental office on the way. If your regular dentist cannot see you right away, go to the nearest emergency dental clinic. Tell them on the phone that you have an avulsed tooth so they can prepare for reimplantation the moment you walk in.

If the injury involves significant trauma to the head or face, go to a hospital emergency department first.

Once you are in the dental chair, the dentist will clean the socket, check for bone damage, and reimplant the tooth. It will be splinted to the neighbouring teeth for several weeks while the bone reattaches. A follow-up root canal is common after reimplantation, which sounds more alarming than it is in practice.

If the tooth cannot be saved, your dentist will walk you through your replacement options. Our post on dental implants vs. dentures covers those options in detail.

Other Dental Situations That Need Urgent Attention

A knocked-out tooth is not the only emergency worth knowing about. These also warrant same-day or next-day care:

• Cracked or fractured tooth: Pain with biting or sharp temperature sensitivity can signal a crack that has reached the nerve. Do not wait.

• Severe toothache with swelling: Throbbing pain, especially with swelling in the jaw or face, can signal an abscess. This is an infection that can spread.

• Dental abscess: Swelling, fever, or a persistent bad taste alongside tooth pain needs prompt attention and possibly antibiotics.

• Soft tissue injury: Cuts to the lip, cheek, or tongue that will not stop bleeding after 10 to 15 minutes of firm pressure need evaluation.

What is not an emergency: mild sensitivity, a slightly chipped tooth with no pain, a lost filling causing no discomfort. These can wait for a scheduled appointment.

If dental anxiety has kept you from building a relationship with a dentist before a crisis, it helps to read about practical ways to manage dental anxiety. Having a dentist you already trust makes emergencies far less stressful to navigate.

Emergency vs. Non-Emergency: A Quick Guide

Not every dental problem needs a same-day call. Here is a simple reference:

Act within the hour: knocked-out tooth, tooth partially pushed out of position, severe facial trauma.

Call today: cracked tooth with pain, severe or throbbing toothache, abscess with swelling or fever, soft tissue injury that will not stop bleeding.

Book soon (within a few days): lost filling or crown with mild sensitivity, chipped tooth with no pain, mild or intermittent tooth sensitivity.

Wait for your next appointment: very minor chip with no pain, general questions about cosmetic procedures, routine cleaning overdue.

Frequently Asked Questions

Can a baby tooth be reimplanted if knocked out?

No. If a baby tooth is knocked out, do not try to reinsert it. Forcing a primary tooth back into the socket can damage the permanent tooth developing below. See a dentist to confirm the situation, but reimplantation is not performed on baby teeth.

What if I can only find part of the broken tooth?

Bring what you have. The dentist needs to account for all fragments, particularly to rule out pieces embedded in soft tissue. Partial crowns can sometimes be bonded back depending on the nature of the break.

Does the Canadian Dental Care Plan cover emergency dental treatment?

The Canadian Dental Care Plan (CDCP) covers some emergency services for eligible patients, and emergency benefits were among the first to roll out nationally. If you have private dental insurance, emergency treatment is typically covered at least partially. Call both your insurer and the dental clinic on the way in, since most offices can check your coverage while you travel.

How long does a tooth reimplantation procedure take?

The reimplantation itself is done under local anaesthetic in one appointment. Splinting is removed at a follow-up visit, usually two to four weeks later. A root canal, if needed, may be performed at the same visit or scheduled shortly after.

If you or someone in your family has had a tooth knocked out, call us immediately. For everything else, including building a relationship with your dentist before you ever need us urgently, schedule an appointment with Lornview Dental.