Knocked-Out Permanent Tooth

A permanent tooth that has been completely knocked out of its socket is a time-sensitive dental emergency. This injury, also called dental avulsion, commonly occurs after a fall, sports collision, accident, or direct impact to the mouth.

Immediate action can affect whether the tooth can be successfully returned to its socket. Find the tooth, handle it carefully, keep it from drying out, and contact a dentist immediately.

Do not replant a knocked-out baby tooth. The steps on this page apply specifically to a permanent adult tooth.

What Is a Knocked-Out Tooth?

A tooth is considered knocked out when the entire tooth, including its root, has been completely displaced from the socket in the jawbone.

This differs from a tooth that is:

• Chipped or fractured but remains in place
• Loose after an impact
• Pushed deeper into the gum
• Moved sideways or partially out of its socket
• Broken at or below the gumline

All significant dental injuries should be examined promptly. Even when a tooth remains in the mouth, trauma may damage its pulp, root, supporting ligament, neighboring teeth, or surrounding bone.

What to Do Immediately After a Permanent Tooth Is Knocked Out

A knocked-out permanent tooth requires immediate attention. Take the following steps as quickly and calmly as possible:

• Locate the tooth immediately
• Pick it up by the crown, not the root
• Do not scrub, scrape, or disinfect the tooth
• If it is dirty, rinse it gently and briefly
• Place it back into the socket when this can be done safely
• Keep the tooth moist if it cannot be replanted
• Contact a dentist immediately

The crown is the white portion normally visible above the gums. The root is the narrower portion that was positioned inside the socket.

Step 1: Find the Tooth

Locate the tooth as soon as possible. Check the ground, playing surface, clothing, or surrounding area where the injury occurred.

Pick the tooth up by its crown. Avoid touching the root because its surface contains delicate cells and tissue that may help the tooth reattach after replantation.

If only part of the tooth can be found, the injury may be a fracture rather than a complete avulsion. Save any fragments and take them to the dentist.

Step 2: Handle the Tooth by the Crown

Hold the tooth only by the crown whenever possible.

Do not:

• Touch or rub the root unnecessarily
• Scrape tissue from the root
• Wrap the tooth in a tissue or paper towel
• Clean it with soap, alcohol, peroxide, mouthwash, or disinfectant
• Allow the tooth to remain dry

Aggressive cleaning can damage the root surface and reduce the possibility of successful healing.

Step 3: Rinse a Dirty Tooth Gently

If the tooth is visibly dirty, rinse it gently for only a few seconds. Use milk, sterile saline, or clean water when available.

Do not scrub the tooth or remove attached tissue. The objective is only to remove obvious surface debris without damaging the root.

Do not leave the tooth soaking in plain water for an extended period.

Step 4: Replant the Permanent Tooth When Possible

When the person is alert, cooperative, and able to follow instructions, the permanent tooth may be gently placed back into its socket immediately.

To replant the tooth:

• Confirm that it is a permanent tooth
• Hold it by the crown
• Orient it so the front faces the correct direction
• Gently guide the root into the socket
• Do not force the tooth into place
• Have the person bite gently on clean gauze to help hold it in position
• Go to a dentist immediately

Do not attempt replantation when the person is unconscious, severely injured, unable to cooperate, or at risk of swallowing or inhaling the tooth.

Do not replant a baby tooth.

Step 5: Keep the Tooth Moist If It Cannot Be Replanted

If immediate replantation is not possible, the tooth must be protected from drying out.

Appropriate temporary storage options may include:

• A commercially prepared tooth-preservation solution
• Cold milk
• Sterile saline
• Holding the tooth inside the cheek of a conscious, responsible adult when there is no risk of swallowing it

Do not place the tooth inside the mouth of a young child, an injured or confused person, or anyone who could swallow or inhale it.

Do not transport the tooth dry in a tissue, plastic bag, container, or pocket. Do not store it in tap water for an extended period.

Step 6: Contact a Dentist Immediately

Call a dentist while the tooth is being located, replanted, or placed in an appropriate storage liquid. Explain that a permanent tooth has been completely knocked out so the dental team understands that immediate treatment is needed.

Be prepared to provide:

• The approximate time of the injury
• How the injury occurred
• Whether the tooth has been replanted
• How the tooth is being stored
• Whether there is uncontrolled bleeding
• Whether the person lost consciousness
• Whether other teeth or facial structures were injured

Bring the tooth and any tooth fragments to the appointment.

Why Time Matters After a Tooth Is Knocked Out

The possibility of saving a knocked-out permanent tooth generally decreases the longer it remains outside the socket, particularly when the root is allowed to dry.

Immediate replantation provides the best opportunity to protect the cells on the root surface. When immediate replantation is not feasible, keeping the tooth moist and reaching a dentist quickly are the next priorities.

Do not delay care while waiting for pain, bleeding, or swelling to improve.

Do Not Replant a Knocked-Out Baby Tooth

A knocked-out primary or baby tooth should not be placed back into its socket. Replantation may harm the developing permanent tooth beneath it.

A child with a knocked-out baby tooth should still be examined by a dentist. The dentist can:

• Confirm whether the missing tooth was primary or permanent
• Examine the socket and surrounding tissues
• Check for fragments or additional injuries
• Evaluate neighboring teeth
• Provide instructions for healing and follow-up care

When there is uncertainty about whether the tooth is primary or permanent, contact a dentist immediately and request guidance.

How to Tell Whether It Is a Permanent or Baby Tooth

Permanent front teeth usually begin replacing primary front teeth around early elementary-school age, but eruption timing varies from child to child.

A permanent tooth may appear:

• Larger than the nearby baby teeth
• Slightly more yellow than primary teeth
• More angular or less uniformly rounded
• Recently erupted among remaining primary teeth

Do not rely solely on appearance when you are unsure. Call a dentist and explain the child’s age, the location of the missing tooth, and whether that tooth had previously replaced a baby tooth.

When to Go to the Emergency Room

A knocked-out tooth is ordinarily treated by a dentist. However, the accident may also cause injuries that require immediate medical care.

Call 911 or go to the nearest emergency department for:

• Loss of consciousness
• Confusion, unusual drowsiness, vomiting, or other signs of a head injury
• Difficulty breathing or swallowing
• Heavy or uncontrolled bleeding
• Severe facial trauma
• A suspected broken jaw
• Neck pain or a suspected spinal injury
• A tooth or fragment that may have been inhaled
• Dental trauma accompanied by another significant bodily injury

After immediate medical risks are addressed, dental evaluation may still be needed to treat the tooth and surrounding tissues.

Review our guide explaining when to choose an emergency dentist or emergency room.

What to Do About Bleeding

Some bleeding from the empty socket and surrounding gum tissue is expected after a tooth is knocked out.

To help control minor bleeding:

• Use clean gauze or a clean cloth
• Apply gentle, steady pressure to the area
• Avoid repeatedly removing the gauze to inspect the socket
• Keep the person seated upright when appropriate

Seek emergency medical care for heavy bleeding that does not slow with steady pressure or bleeding associated with severe facial trauma, weakness, faintness, or breathing difficulty.

What Not to Do With a Knocked-Out Tooth

Avoid actions that can damage the tooth or delay professional care.

• Do not hold the tooth by its root
• Do not scrub or scrape the tooth
• Do not remove tissue attached to the root
• Do not clean it with chemicals or disinfectants
• Do not wrap it in a tissue or paper towel
• Do not allow it to dry out
• Do not force it into the socket
• Do not replant a baby tooth
• Do not postpone treatment because bleeding has stopped

Do not place the tooth in the mouth of anyone who may swallow or inhale it.

What the Dentist Will Examine

The dentist will evaluate the knocked-out tooth, the socket, nearby teeth, the bite, and the surrounding soft tissues. Dental imaging may be used to look for fractures, retained tooth fragments, injuries to neighboring teeth, or damage to supporting bone.

The evaluation may include:

• Determining how long the tooth was outside the mouth
• Reviewing how the tooth was handled and stored
• Examining the condition of the root and socket
• Checking for lip, tongue, gum, or facial injuries
• Assessing neighboring teeth for looseness or displacement
• Evaluating the jaw and bite
• Reviewing relevant medical history and immunization status

The dentist will then determine whether replantation or another treatment approach is appropriate.

How a Knocked-Out Permanent Tooth Is Treated

When appropriate, the dentist may gently clean the area, place the tooth back into its socket, and stabilize it with a flexible splint attached to neighboring teeth.

Treatment and follow-up may include:

• Replanting the tooth
• Stabilizing it with a dental splint
• Cleaning and treating injuries to the gums or lips
• Evaluating the need for medication
• Reviewing tetanus protection when the injury involved contamination
• Monitoring healing with examinations and dental imaging
• Providing root canal treatment when indicated
• Referring the patient to an endodontist, oral surgeon, or another healthcare provider when needed

The exact treatment depends on factors such as the patient’s age, root development, time outside the socket, storage conditions, associated injuries, and condition of the tooth.

Will a Replanted Tooth Need Root Canal Treatment?

Many replanted permanent teeth require root canal treatment because the blood supply and nerve tissue inside the tooth may be damaged when it is knocked out.

The timing and necessity of treatment depend partly on whether the tooth had a fully formed root at the time of the injury. The dentist will evaluate root development, healing, symptoms, and dental imaging before determining the appropriate treatment plan.

Continued monitoring is important even when the replanted tooth is comfortable.

Follow-Up Care After Replantation

A replanted tooth requires ongoing professional monitoring. Complications may develop even when the tooth initially appears stable.

Follow all instructions provided by the treating dentist, which may include:

• Attending every scheduled follow-up visit
• Avoiding biting directly with the injured tooth
• Eating softer foods during early healing
• Keeping the teeth and gums clean as directed
• Using prescribed medication exactly as instructed
• Protecting the mouth from additional injury
• Reporting new pain, swelling, drainage, discoloration, or looseness

The dentist may periodically examine the tooth and take dental X-rays to evaluate the root, surrounding bone, and supporting tissues.

Possible Complications After a Tooth Is Replanted

Replantation does not guarantee that the tooth will remain healthy permanently. Possible complications include:

• Infection inside the tooth
• Inflammation or breakdown of the root
• Loss of supporting bone
• Discoloration of the tooth
• Persistent looseness
• Fusion of the root to the surrounding bone
• Failure of the tooth to heal predictably

Prompt treatment and regular follow-up give the dental team the best opportunity to identify and manage complications.

What If the Permanent Tooth Cannot Be Saved?

Some knocked-out teeth cannot be predictably replanted or retained. This may occur when the tooth is severely damaged, remains dry too long, cannot be located, or develops complications after treatment.

When the tooth cannot be saved, replacement options may eventually include:

• A removable temporary tooth replacement
• A dental bridge
• A dental implant when development and oral conditions permit
• Orthodontic space management in selected cases
• Another restorative plan based on the patient’s age and oral health

For a growing child or teenager, treatment planning may involve temporary solutions until facial growth is complete.

Preventing Knocked-Out Teeth During Sports

Sports and recreational activities are common causes of dental trauma. A properly fitted mouthguard can help reduce the risk of injuries to the teeth, lips, cheeks, and gums.

Protective steps include:

• Wearing an athletic mouthguard during contact and collision sports
• Using a mouthguard during activities with a risk of falls or facial impact
• Replacing a damaged or poorly fitting mouthguard
• Using helmets, face shields, and other sport-specific protective equipment
• Keeping emergency dental contact information readily available

A custom-fitted mouthguard may provide better fit, retention, and comfort than a loose or poorly adapted appliance.

Emergency Care for a Knocked-Out Tooth in Madison, Alabama

A knocked-out permanent tooth requires immediate attention. Patients in Madison, Huntsville, Harvest, Athens, and surrounding North Alabama communities should locate the tooth, protect the root, keep the tooth moist, and contact a dentist without delay.

Apex Dental evaluates traumatic dental injuries and uses modern diagnostic technology to assess the affected tooth, neighboring teeth, socket, and supporting structures.

Learn more about emergency dental services in Madison and review what is considered a dental emergency.

Frequently Asked Questions About Knocked-Out Permanent Teeth

▸Can a knocked-out permanent tooth be saved?
A knocked-out permanent tooth can sometimes be replanted and retained, particularly when it is handled correctly, kept from drying out, and treated immediately. No outcome can be guaranteed, and long-term follow-up is required.

▸How quickly should I see a dentist?
Contact a dentist immediately. The possibility of successful treatment generally decreases as the tooth remains outside the socket, especially when its root becomes dry.

▸Should I put the tooth back into the socket?
A permanent tooth may be gently replanted when the person is conscious, cooperative, and not at risk of swallowing or inhaling it. Hold the tooth by the crown, orient it correctly, and do not force it into place.

▸What should I store a knocked-out tooth in?
When the tooth cannot be replanted, keep it moist in a tooth-preservation solution, cold milk, or sterile saline. Holding it inside the cheek may be an option for a conscious, responsible adult with no risk of swallowing it.

▸Should a knocked-out baby tooth be replanted?
No. A knocked-out primary tooth should not be returned to the socket because doing so may harm the developing permanent tooth.

▸Will a replanted tooth need a root canal?
Many replanted permanent teeth require root canal treatment, although treatment decisions depend on factors such as root development, the patient’s age, and how the tooth heals.

Related Emergency Dental Resources

• Emergency Dental Guides
• What Is Considered a Dental Emergency?
• Emergency Dentist or Emergency Room?
• Emergency Dental Services
• Broken Tooth
• Loose Teeth
• Tooth Pain
• Contact Apex Dental