March 26, 2024



A knocked-out tooth, medically known as an avulsed tooth, is one of the most urgent dental emergencies. Whether the result of a fall, sports injury, or an accident, immediate action can significantly increase the chances of saving the tooth. In such emergencies, knowing what to do can make a crucial difference.


This article outlines the essential steps you should take if you or someone else experiences a knocked-out tooth so you can learn more about how to handle this situation effectively. Continue reading to learn more!

Asian woman in the red shirt holding a brown paper with the broken tooth cartoon picture of his mouth against the gray background, Decayed tooth, The concept with healthcare gums and teeth

Common causes of knocked-out tooth

Tooth avulsion, or the complete displacement of a tooth from its socket due to trauma, can happen for various reasons. The most common causes of tooth avulsion include:


  • Accidents and falls: Slips, trips, and falls, especially where a person lands on their face or mouth, can lead to tooth avulsion. They're common in children and adults, with varying levels of severity depending on the fall.
  • Sports injuries: Contact sports such as football, hockey, basketball, boxing, and martial arts pose a significant risk for tooth avulsion. Non-contact sports and recreational activities that involve swift movements or potential for impact (like skateboarding or cycling) also contribute to a fair number of cases.
  • Physical altercations: Fights or physical confrontations can lead to severe dental injuries, including knocked-out teeth. The impact from a punch or a kick directly to the mouth is a common cause in such scenarios.
  • Traffic accidents: Car, motorcycle, and bicycle accidents often result in facial traumas that can cause teeth to be avulsed, especially if the individual is not wearing a seatbelt or helmet.
  • Biting on hard objects: Accidentally biting down on hard food items or objects, such as ice, hard candies, or bones, can sometimes lead to tooth avulsion, particularly if the tooth is already weakened by decay or other issues.
  • Poor dental health: Teeth weakened by decay, gum disease, or previous dental work may be more susceptible to avulsion even with less forceful impact.


Preventive measures such as wearing mouthguards during sports, maintaining good oral hygiene, and using seatbelts and helmets can reduce the risk of tooth avulsion. Awareness and education on the risks associated with physical activities and the importance of protective gear are crucial in preventing such dental emergencies.


What to do after tooth avulsion

When your tooth gets knocked out, it's crucial to act quickly and follow these steps to increase the chances of saving the tooth:


1. Stay calm

First, try to stay calm. It can be easy to go into panic mode, especially after an accident and if you're in pain or bleeding. However, panic can make it harder to take the necessary steps to save your teeth. As much as possible, don't make rapid movements that could further disturb the affected area.


2. Find the tooth

Locate the tooth immediately. When you find it, please pick it up by the crown (the part you see above the gum line when it's in your mouth), not by the root, to avoid damaging it.


3. Clean the tooth

If the tooth is dirty, gently rinse it with milk, saline solution, or clean water. Don't scrub it or remove any tissue attached to it. Avoid using soap or chemicals; don't dry the tooth or wrap it in a tissue or cloth.


4. Reinsert the tooth

Try to reinsert the tooth back into its socket. Gently push it in with your fingers, or carefully place it above the socket and close your mouth slowly to help put it back in place. Bite softly on a clean cloth or gauze to hold it in place.


5. Keep the tooth moist

If you can't reinsert the tooth, it's vital to keep it moist. Place the tooth in a small milk container or use a tooth preservation product if available. If neither is an option, place the tooth next to your cheek, but be careful not to swallow it. Avoid using tap water, as it can damage the root surface cells.


6. Seek immediate dental care

Time is critical in saving a knocked-out tooth. Contact your dentist right away or go to an emergency dental clinic. Ideally, you should receive treatment within 30 minutes of the injury, but teeth can often be saved if reimplanted within an hour or so.


7. Follow up

After the initial treatment, follow your dentist's advice for care and follow-up visits. They may suggest a tetanus shot if your injury warrants it, and they'll likely schedule follow-up visits to monitor the reimplanted tooth and ensure it heals properly.


Remember, the success of reimplanting a knocked-out tooth depends significantly on how quickly and carefully you act after the incident.


What to do in case of bleeding

Managing bleeding after a tooth has been knocked out is essential in handling this dental emergency. Here's what you should do:


1. Rinse your mouth

Gently rinse your mouth with warm water to clean the affected area. Do this carefully to avoid dislodging any blood clots that may have formed.


2. Apply pressure

Use a clean piece of gauze or a clean cloth to apply gentle but firm pressure to the bleeding site. You can use a tea bag if gauze or cloth isn't immediately available. Tea contains tannins that can help aid in clot formation and reduce bleeding. Keep applying pressure for about 10 to 15 minutes. If the gauze becomes soaked with blood, place a new piece on top without removing the soaked one to avoid disrupting any formed clots.


3. Elevate your head

Keep your head elevated above your heart level. This position helps reduce bleeding.


4. Avoid sucking actions

Don’t suck on the wound or spit vigorously, as these actions can increase bleeding and delay clot formation.


5. Cold compress

Apply a cold compress to the outside of your cheek near the bleeding site for five to 10 minutes. Doing so can help reduce swelling and bleeding. Ensure not to apply ice directly to your skin or gum; wrap it in a cloth first.


6. Avoid aspirin

Don’t take aspirin or medications that can thin the blood, as they may increase bleeding. If pain relief is needed, consider taking acetaminophen instead, but consult a healthcare professional before taking any medication, especially in an emergency.


7. Seek professional help

If the bleeding does not stop or slows down but continues for an extended period, seek immediate dental or medical attention. Continuous bleeding may need professional intervention to manage effectively.


8. Monitor for infection

In the days following the injury, watch for signs of infection, such as increased swelling, pain, fever, or a bad taste in the mouth. If any of these symptoms occur, contact a dentist immediately.


Remember, while controlling bleeding is significant, preserving the knocked-out tooth and seeking immediate dental care is equally crucial to increase the chances of successfully reimplanting the tooth.


Frequently asked questions about tooth avulsion

Here are some of the most frequently asked questions regarding tooth avulsion, along with their answers:


  • ‘Can a knocked-out tooth be saved?’

A knocked-out tooth can often be saved if immediate action is taken. The best chance to save the tooth occurs if it's reimplanted within 30 to 60 minutes after avulsion. The critical steps include handling the tooth, keeping it moist, and seeking immediate dental care.


  • ‘Should I clean the avulsed tooth?’

If the tooth is dirty, it should be gently rinsed with milk or saline solution to remove debris. Avoid scrubbing the tooth or using tap water, as this can damage the delicate cells on the root surface, which is crucial for successful reimplantation.


  • ‘How do I transport the tooth to the dentist?’

If the tooth can't be placed back into its socket, keep it moist by placing it in a container with milk, saline solution, or a tooth preservation product. If none of these are available, the tooth can be transported in the mouth or placed beside the cheek, although this method poses a risk of swallowing the tooth.


  • ‘What’s the treatment for a knocked-out tooth?’

The primary treatment involves cleaning the socket and reinserting the tooth immediately. The dentist may use a splint to stabilize the tooth for a few weeks. Additional treatments, such as root canal therapy, might be necessary, depending on the root development of the tooth and the length of time it was out of the mouth.


  • ‘What if the tooth cannot be found or saved?’

If the avulsed tooth cannot be found or reimplanted, several options exist for replacing the missing tooth, including dental implants, bridges, or removable partial dentures. The best choice depends on various factors, including the health of the adjacent teeth and gums, which your dentist will discuss with you.


  • ‘How can I prevent tooth avulsion?’

While not all accidents can be prevented, wearing protective mouthguards during sports or recreational activities can significantly reduce the risk of tooth avulsion. Additionally, avoiding using teeth to open things or bite down on complex objects can prevent unnecessary trauma to the teeth.


  • ‘What are the long-term outcomes for a reimplanted tooth?’

The long-term success of a reimplanted tooth varies. Factors such as the tooth's condition and socket at the time of reimplantation, the length of time the tooth was out of the mouth, and how well the tooth is cared for after reimplantation all play a role. Regular dental check-ups are essential for monitoring the health of the reimplanted tooth and surrounding teeth.


These FAQs cover the basics of what to know and do in the event of a tooth avulsion, but individual circumstances can vary. It's always best to consult a dental professional for advice tailored to your situation.


Understanding the importance of quick action

The key to saving a knocked-out tooth is speed and proper handling. Cells on the root of the tooth start to die within minutes of being out of the gum, and the chances of successful reimplantation decrease as time passes. Therefore, learning more about immediate care and treatment options is crucial.



A knocked-out tooth is a dental emergency that requires immediate action. Following the steps outlined above increases the chance of saving the tooth and maintaining your oral health. Remember, after providing initial care, seeking professional dental treatment is critical. Dentists are equipped with the necessary tools and expertise to assess the situation and take further action, such as splinting the tooth to adjacent teeth for stabilization or providing other treatment options if the tooth cannot be saved. Quick, informed decisions can make all the difference in preserving your smile.


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