What This Guide Covers and Who It Is For
This guide covers emergency first aid and professional treatment for teeth that are knocked out, fractured, or pushed out of position by an injury.
Dental trauma can happen to anyone. Sports collisions, falls, car accidents, and even biting down on something hard can damage a tooth. The damage may be visible, like a broken corner, or hidden, like an injured nerve deep inside the root. Either way, the right response in the first minutes and hours after the injury can determine whether the tooth survives long term.
This guide is written for patients, parents, coaches, and caregivers. It explains what to do at the scene of an injury, what treatment an endodontist (a dentist who specializes in the inner tissue of teeth) may recommend, and how long recovery typically takes. If you are dealing with a dental emergency right now, start with the next section on first aid.
Types of Dental Trauma and First Aid Steps
Dental trauma ranges from minor chips to complete tooth loss, and each injury type requires a specific response.
Avulsion: Knocked-Out Teeth
An avulsion means the tooth has been completely knocked out of its socket. This is the most time-sensitive dental emergency. Research shows that the periodontal ligament cells on the root surface begin to die within minutes of drying out. [1] Replanting the tooth within 30 minutes gives it the best chance of reattaching to the bone. [1]
If a permanent tooth is knocked out, pick it up by the crown (the white chewing surface). Do not touch or scrub the root. If the root is dirty, rinse it gently with milk or saline for no more than 10 seconds. [3] Try to place the tooth back in the socket yourself, biting down gently on a clean cloth to hold it in place. If you cannot replant it, store it in cold milk, saline, or inside the cheek (against the gum) so it stays in contact with saliva. [3]
A survey of secondary school students in Hong Kong found that fewer than 25% of respondents knew that milk was a suitable storage medium for a knocked-out tooth. [2] This knowledge gap is common. Knowing the right storage method ahead of time can make a real difference in tooth survival.
Baby teeth that are knocked out are typically not replanted. Forcing a baby tooth back into the socket can damage the developing permanent tooth underneath. See a dentist promptly, but do not attempt replantation for a primary tooth. [3]
Luxation: Displaced Teeth
A luxation injury means the tooth has been pushed, pulled, or twisted in its socket but has not come out completely. There are several types. A lateral luxation pushes the tooth sideways. An extrusive luxation pulls it partially out. An intrusive luxation drives it up into the bone. Each one damages the periodontal ligament and may injure the nerve (pulp) inside the tooth.
For any displaced tooth, avoid pushing it back into position yourself unless you have clear guidance from a dental professional. Apply gentle pressure with gauze to control bleeding. See a dentist or endodontist as soon as possible. The clinician will reposition the tooth and typically splint it (attach it to neighboring teeth with a thin wire or resin) to allow healing. [3]
Fractures: Cracked and Broken Teeth
Tooth fractures are classified by how deep the break goes. A simple enamel chip (the outer shell) usually needs only cosmetic smoothing or bonding. A fracture that extends into the dentin (the layer under the enamel) may cause sensitivity and needs a protective restoration. A fracture that exposes the pulp (the nerve and blood supply) requires endodontic treatment to prevent infection.
Root fractures are breaks in the root below the gum line. They are not always visible without an X-ray. A horizontal root fracture may heal if the tooth is splinted and monitored. A vertical root fracture, where the crack runs up and down the root, has a much poorer prognosis and may eventually require extraction. [3]
If you break a tooth, save any large fragments. Store them in milk or water. A dentist may be able to bond the fragment back onto the tooth. Apply a cold compress to the face to reduce swelling, and see a dental professional within a few hours.
What Patients and Parents Need to Know Before Treatment
Timing, tooth maturity, and the type of injury all influence how an endodontist will treat a traumatized tooth.
Why Timing Is Critical
For knocked-out teeth, the goal is replantation within 30 minutes. After 60 minutes outside the socket, the survival rate of the tooth drops significantly because the root surface cells have dried and died. [1] Even if you cannot get to a dentist in time, replanting the tooth yourself and then seeing a professional promptly improves outcomes. [3]
For other trauma types, the urgency is slightly lower but still real. Displaced teeth should be seen within a few hours. Fractured teeth with exposed pulp should be treated the same day if possible. Even a painless chip should be evaluated within a week, because hidden damage to the root or pulp may not produce symptoms right away.
Children and Adolescents vs. Adults
Children and teenagers are the most common victims of dental trauma, especially during sports and active play. Their treatment differs from adult treatment in important ways.
In young patients, the roots of permanent teeth may still be forming. An immature root has an open tip and thinner walls. An endodontist may try to preserve the living pulp tissue in these teeth using a procedure called apexogenesis, which encourages the root to continue developing. In contrast, an adult with a fully formed root and a damaged pulp will typically receive conventional root canal treatment. [3]
If a young tooth with an open apex (an incomplete root tip) loses its blood supply, the endodontist may perform a procedure called revascularization. This aims to encourage new tissue growth inside the canal. The approach takes advantage of the healing potential that younger patients naturally have.
Not Every Traumatized Tooth Needs a Root Canal
Many patients assume that any significant tooth injury means a root canal is inevitable. That is not always the case. A tooth that is slightly loosened (subluxation) or has a minor lateral luxation may recover on its own if the pulp's blood supply was not permanently severed. [3]
Endodontists often use a "watch and wait" approach. They test the tooth's nerve response at follow-up visits using cold or electric pulp testing. They also take periodic X-rays to look for signs of infection or root resorption (the body breaking down the root). A decision about root canal treatment may not be made until weeks or even months after the injury. [3]
What Happens During Emergency Dental Trauma Treatment
An emergency visit for dental trauma typically involves stabilization, imaging, and a short-term treatment plan.
The Initial Examination
The dentist or endodontist will examine the injured area visually, checking for fractures, bleeding, and tooth mobility. They will take X-rays, often from multiple angles, to assess root integrity and the position of any displaced teeth. In some cases, a cone beam CT scan (a 3D X-ray) may be used to detect fractures that do not show up on standard films.
Pulp vitality tests may be performed. These tests use cold stimulus or a small electrical current to check whether the nerve inside the tooth is still responding. However, a tooth that has just been traumatized may not respond normally for several weeks. A negative result at the first visit does not always mean the pulp is dead. [3]
Repositioning and Splinting
If a tooth has been knocked out, the endodontist will clean the socket gently, reposition the tooth, and apply a flexible splint. The splint is a thin wire or composite strip bonded to the injured tooth and one or two healthy teeth on each side. It holds the tooth in place while the periodontal ligament heals.
Splinting duration varies by injury type. A simple avulsion may be splinted for about two weeks. A root fracture may need splinting for four weeks or longer. During this time, patients should eat soft foods and avoid biting directly on the splinted tooth.
When Root Canal Treatment Is Performed
If the pulp has been irreversibly damaged, the endodontist will perform root canal treatment. For a replanted tooth with a fully formed root, root canal treatment is often started within one to two weeks after replantation. The clinician removes the damaged pulp, cleans and shapes the canal, and places medication inside. A final filling material is placed at a later visit. [3]
For teeth with immature (open) root tips, the endodontist may delay root canal treatment to allow the pulp a chance to recover. If recovery does not occur, revascularization or apexification (placing a mineral barrier at the root tip) may be used instead of traditional root canal filling.
Follow-Up Monitoring
Follow-up visits are a critical part of dental trauma care. Even teeth that seem fine initially can develop problems months or years later. Issues like root resorption, pulp necrosis (death of the nerve), and ankylosis (the root fusing to the bone) may develop silently. [3]
A typical follow-up schedule includes visits at two weeks, one month, three months, six months, and one year after the injury. Some patients need monitoring for up to five years. At each visit, the endodontist will check the tooth's color, mobility, and response to pulp tests, and will take X-rays to inspect the root and surrounding bone.
Cost Factors for Dental Trauma Treatment
The cost of treating dental trauma depends on the injury type, the number of teeth involved, and whether root canal treatment is needed.
An emergency examination with X-rays may range from $100 to $300. Splinting a displaced or replanted tooth may cost $200 to $600. Root canal treatment on a front tooth typically ranges from $700 to $1,200, while a back tooth may cost $900 to $1,500 or more. If a crown (a protective cap) is needed afterward, that adds $800 to $1,800. Costs vary by location, provider, and case complexity.
Many dental insurance plans cover a portion of emergency exams and root canal treatment. However, coverage limits, deductibles, and waiting periods vary widely. Contact your insurance provider before treatment if possible. If you are uninsured, ask the endodontist's office about payment plans or financing options.
Keep in mind that skipping follow-up appointments to save money can be costly in the long run. Undetected complications like root resorption or infection may lead to tooth loss, which creates the need for a more expensive replacement such as a dental implant.
When to See an Endodontist vs. a General Dentist
Any dental trauma should be seen by a dental professional promptly, but certain injuries benefit from the specialized training of an endodontist.
A general dentist can handle minor chips, small fractures limited to enamel, and initial stabilization. However, an endodontist has advanced training in pulp biology, root canal anatomy, and the specific healing patterns of traumatized teeth. The American Association of Endodontists recommends seeing an endodontist for avulsions, luxation injuries, root fractures, and any fracture that exposes the pulp. [3]
Children and adolescents with immature teeth especially benefit from endodontic expertise. Procedures like apexogenesis and revascularization require specialized knowledge of developing tooth biology. An endodontist can also provide the long-term monitoring protocol these cases need.
You should also see an endodontist if a previously traumatized tooth starts to darken in color, becomes sensitive to heat, or develops swelling near the gum line. These are signs that the pulp may be dying or that an infection is developing, even months or years after the original injury.
- Knocked-out permanent tooth: See an endodontist or emergency dentist immediately.
- Tooth pushed out of position: See a dental professional within a few hours.
- Fractured tooth with visible pink or red tissue: The pulp is exposed. See an endodontist the same day.
- Chipped tooth with no pain: See a general dentist within one week for evaluation.
- Darkening tooth weeks after injury: Schedule an endodontic consultation for pulp testing.
Find a Dental Trauma Specialist Near You
If you or your child has suffered a dental injury, prompt evaluation by a qualified specialist gives the tooth the best chance of long-term survival. Use our directory to find an endodontist in your area who treats dental trauma cases. Visit the endodontics page to search by location and schedule a consultation.
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