Dental Injuries (Dental Trauma): Types, First Aid, and Treatment Options

Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026

Quick Answer

Dental trauma is any injury to the teeth, gums, jaws, tongue or lips, most often from falls, vehicle accidents or sports [1]. If a tooth is knocked out, rinse it, try placing it back without touching the root, and see a dentist within about 30 to 40 minutes [1]. Go to the emergency room for uncontrolled bleeding or broken facial bones [1].

What the research says

• Time out of the mouth — especially time spent dry — affects how a replanted tooth fares. In a prospective study of 50 avulsed permanent incisors in children aged 6 to 16, the best predictor of overall root resorption was the total time the tooth was dry, and the best predictor of replacement resorption was the total time the tooth was out of the mouth (PubMed: Boyd et al., Int J Paediatr Dent, 2000 [3]).

• Mouth guards cut the risk of sports-related mouth injuries. A meta-analysis of 26 studies found that in 12 cohort studies, people who did not use a mouth guard had 2.33 times the risk of an orofacial injury (95% CI 1.59-3.44). The effect on concussion was modest (risk ratio 1.25, 95% CI 0.90-1.74) (PubMed: Knapik et al., Sports Med, 2019 [4]).

• Many factors raise the risk of dental trauma, but the evidence behind them is mostly low quality. An overview of 19 systematic reviews linked male sex, child age, greater overjet, inadequate lip coverage, anterior open bite, cavities in permanent teeth, overweight, a previous dental injury, tongue piercing, alcohol use, and sports participation with a greater chance of injury. However, four reviews were rated critically low quality, eleven low, and four moderate (PubMed: Magno et al., Community Dent Oral Epidemiol, 2020 [5]).

What Is Dental Trauma?

Dental trauma refers to any mouth injury. This includes injury to your teeth, gums, jaws, tongue, lips, or surrounding structures [1].

Traumatic dental injuries range from mild to severe. Some are dental emergencies and require immediate treatment.

If you have a severe dental injury, call your dentist right away for further instructions. If your dentist isn't available — or if you have severe pain, broken facial bones, or bleeding that won't stop — head to your nearest emergency room [1].

There are many types of dental injuries. Understanding the type helps you act correctly while waiting for care.

Dental Injury Type	Medical Term	What Happens
Chipped teeth	Crown fracture	A piece of the tooth breaks off
Cracked teeth	Fracture	A crack runs through the tooth structure
Dislodged teeth	Luxation	The tooth moves out of its normal position
Knocked-out teeth	Avulsion	The tooth comes completely out of its socket
Intruded tooth	Intrusion	The tooth is jammed into its socket
Soft tissue cuts	Lacerations	Cuts in the gums, lips, or tongue
Jaw injuries	Fracture or dislocation	Broken or dislocated jaw

Figure 1: Dental trauma — know your injury types, and the 30-to-40-minute window for a knocked-out tooth.

Symptoms and Causes

What Are the Symptoms?

Dental trauma symptoms depend on the type of injury you have. They may include a toothache, a discolored tooth, mouth pain, swelling, bleeding from your mouth, a change in the way your teeth fit together when you bite down, a slightly loose tooth, and difficulty moving your jaw or opening your mouth [1].

Symptom	What to Notice
Toothache	Pain localized to the injured tooth
Discolored tooth	The tooth turns darker after impact
Mouth pain and swelling	Pain beyond the tooth itself; visible swelling
Bleeding from your mouth	Continuous oozing or active bleeding
Bite changes	Teeth no longer fit together the way they used to
Loose tooth	The tooth moves slightly in its socket
Jaw difficulty	Trouble moving the jaw or opening your mouth

What Causes Dental Trauma?

The most common causes of dental injuries are falls, vehicle accidents, and sports-related injuries [1]. Other causes include physical altercations, like fighting or domestic abuse [1].

Cause Category	Examples
Falls	Trips, slips, and falls — the leading cause overall
Vehicle accidents	Car wrecks and other vehicle collisions
Sports injuries	Impact injuries during sports play
Physical altercations	Fighting or domestic abuse

Figure 2: Dental injury warning signs and the most common causes.

Who Is at Higher Risk?

A dental trauma risk factor is something that increases your chances of getting a mouth injury.

Children and adolescents under 20 are the group in which dental injuries are most common [1]. Playing contact sports is a major risk factor, as is having an overjet — when your upper teeth "stick out" over your lower teeth [1] [5]. Extensive tooth decay (cavities) weakens teeth and raises injury risk [1]. Lip and tongue piercings are also listed as risk factors [1].

Risk Factor	Why It Raises Risk
Age under 20	Dental injuries are most common among children and adolescents
Contact sports	Higher chance of impact to the mouth
Overjet	Upper teeth protruding over lower teeth are more exposed
Extensive tooth decay	Weakened, cavity-damaged teeth fracture more easily
Lip and tongue piercings	Jewelry can strike and chip teeth

What Are the Consequences of Untreated Dental Trauma?

A dental injury can make you more vulnerable to oral health issues [1]. Many people also experience emotional and psychological effects.

Possible consequences include cavities, an abscessed tooth, tooth loss, pain, difficulty chewing, speech issues, changes in appearance, and lower self-esteem [1].

Consequence	Category
Cavities; abscessed tooth	Oral health complications
Tooth loss; pain; difficulty chewing	Function and comfort
Speech issues; changes in appearance	Communication and aesthetics
Lower self-esteem	Emotional and psychological effect

Diagnosis and Tests

How Are Dental Injuries Diagnosed?

Diagnosis starts with the dentist examining your mouth. They'll also ask how you got your injury and what kind of symptoms you have.

They may also take dental X-rays or a CT (computed tomography) scan [1]. These imaging tests allow your dentist to see the extent of your injuries.

Diagnostic Step	Purpose
Mouth examination	Visual assessment of teeth, gums, and soft tissue
Injury history interview	How the injury happened; symptom description
Dental X-rays	See damage extent within teeth and bone
CT scan	Detailed imaging for complex injuries (e.g., jaw fractures)

Figure 3: How dental injuries are diagnosed, and when to book scheduled care versus seek emergency help.

Management and Treatment

What Should You Do Immediately?

The first thing you should do is call a dentist. They can give you specific instructions for your situation. If you don't have a dentist, or if it's after your dentist's business hours, you should visit an urgent care clinic.

Some dental injuries, like a slightly chipped tooth, can wait until you can schedule an appointment with a dentist. Other injuries, like a knocked-out tooth or broken jaw, need immediate treatment.

While you're waiting to see a dentist, here are some things you can do in the meantime.

Injury	Immediate Action
Fractured tooth	Locate broken pieces and bring them to your appointment; cover jagged edges with orthodontic wax (sold at most pharmacies)
Knocked-out tooth	Rinse in clean water; gently place back in socket without touching the root; if you can't, store it in a container and bring it along
Mouth pain	Take over-the-counter pain relievers like acetaminophen or ibuprofen
Swelling	Use an ice pack to soothe it

The golden rule for knocked-out teeth: dentists can sometimes replant knocked-out teeth, but you only have a short window of time to do this — usually within 30 to 40 minutes [1].

When Should You Go to the ER?

Go to your nearest emergency room if dental trauma results in excessive bleeding that won't stop, severe pain that doesn't get better with medication, or a broken jaw or other broken facial bones [1].

How Is Dental Trauma Treated?

There are several procedures dentists use to treat traumatic dental injuries. The type of treatment that's right for you depends on the type of injury you have.

Common dental trauma treatments include dental fillings and dental bonding, root canal therapy, restabilization or replantation, tooth extraction, and tooth replacement [1].

Treatment	Used For	What Happens
Dental fillings and bonding	Minor injuries	Camouflage chips and cracks; rebuild mildly damaged teeth
Root canal therapy	Cracks or fractures reaching the tooth pulp	Removes nerves, blood vessels, and connective tissues inside the tooth; a dental crown may follow to protect the tooth
Restabilization or replantation	Dislodged or knocked-out teeth	A custom splint keeps the tooth from moving until surrounding ligaments reattach; a knocked-out tooth may be replanted first
Tooth extraction	Teeth beyond repair	Removal of the damaged tooth; a dental bone graft may be placed in the socket to preserve jawbone and prevent future bone loss
Tooth replacement	Tooth loss	Dental bridges or dental implants restore speaking and chewing function

It's important to replace lost teeth. If you don't, the gaps in your smile can have a negative impact on speaking and chewing function. Your dentist can help determine whether a dental bridge or a dental implant is right for you [1].

Outlook / Prognosis

What Can You Expect?

Every injury — and every person — is unique. If you sustain a dental injury, you should contact a dentist right away. They can give you further instructions and schedule any necessary office visits.

In general, the sooner you get treatment, the better your outlook.

How Long Does It Take to Heal?

Healing time depends on the type of injury you had.

Injury Severity	Typical Healing Time
Minor soft tissue injuries	Less than one week
Standard tooth trauma	About four to six weeks
Tooth trauma reaching the pulp	Several months for full recovery

Prevention

How Can You Reduce Your Risk?

You can't always prevent dental trauma altogether, but there are steps you can take to reduce your risk.

Wear a protective mouth guard when playing contact sports, and wear your seatbelt when driving or riding in a vehicle [1]. Don't chew on ice, don't use your teeth as tools (like tearing tags off clothing), and don't bite your fingernails [1].

Prevention Step	Risk It Addresses
Mouth guard in contact sports	Sports-related impact injuries
Seatbelt in vehicles	Vehicle-accident injuries
Don't chew ice	Impact fractures from hard objects
Don't use teeth as tools	Unnecessary stress fractures
Don't bite fingernails	Chipping and edge damage

Living With Dental Trauma

When Should You Call Your Dentist?

Call your dentist right away if you have a dental injury. They can give you instructions on what to do next.

Even if you're not in pain, it's important to get treatment as soon as possible. Left untreated, dental trauma can lead to other serious oral health issues, like cavities and infection [1].

If you've experienced dental trauma, here are some questions you might want to ask your dentist:

• How serious is my injury?

• What treatment do I need?

• How long will treatment take?

• What's the success rate?

• Will you be able to save my tooth?

Key Takeaways

Dental trauma covers any injury to the teeth, gums, jaws, tongue, lips, or surrounding mouth structures, with falls, vehicle accidents, and sports injuries as the top three causes. The three most common injuries — tooth crown fractures, knocked-out teeth, and dislodged teeth — are all treatable, and quick action makes the biggest difference: a knocked-out tooth can sometimes be replanted, but only within roughly 30 to 40 minutes. Call a dentist immediately for any dental injury, even without pain, since untreated trauma can lead to cavities and infection. Most tooth trauma heals in four to six weeks, and simple habits — mouth guards, seatbelts, and skipping the ice-chewing — go a long way toward prevention.

Take the Next Step

If you or your child has just sustained a mouth injury, call a dentist right away for situation-specific instructions — if a tooth has been knocked out, rinse it in clean water and get to dental care within 30 to 40 minutes. Prompt treatment gives you the best chance of saving natural teeth and restoring oral health.

Frequently Asked Questions

1. What is dental trauma?

Dental trauma refers to any mouth injury, including injury to the teeth, gums, jaws, tongue, lips, or surrounding structures. Injuries range from mild to severe, and some are dental emergencies requiring immediate treatment.

2. What are the most common dental injuries?

The three most common dental injuries are tooth crown fractures, knocked-out teeth, and dislodged teeth.

3. What causes dental trauma?

The most common causes are falls, vehicle accidents, and sports-related injuries. Other causes include physical altercations, such as fighting or domestic abuse.

4. Who is most at risk?

Dental injuries are most common among children and adolescents under 20. Additional risk factors include playing contact sports, having an overjet (upper teeth that stick out over lower teeth), extensive tooth decay, and lip or tongue piercings.

5. What should I do if a tooth is knocked out?

Rinse the tooth in clean water and try to gently place it back in its socket without touching the root. If you can't, put it in a container and bring it to your dentist. Dentists can sometimes replant knocked-out teeth, but only within a short window — usually 30 to 40 minutes.

6. What should I do for a fractured tooth before seeing the dentist?

Locate any broken pieces and bring them to your appointment. If jagged edges irritate your tongue, cover the rough spots with orthodontic wax, available at most pharmacies.

7. What are the symptoms of a dental injury?

Symptoms depend on the injury type and may include toothache, discolored tooth, mouth pain, swelling, bleeding from the mouth, a change in how your teeth fit together, a slightly loose tooth, and difficulty moving your jaw or opening your mouth.

8. When should I go to the ER instead of the dentist?

Go to the nearest emergency room if the injury causes excessive bleeding that won't stop, severe pain that doesn't improve with medication, or a broken jaw or other broken facial bones.

9. How is dental trauma diagnosed?

A dentist examines your mouth and asks how the injury happened and what symptoms you have. They may also take dental X-rays or a CT scan to see the extent of the injuries.

10. How is dental trauma treated?

Treatment depends on the injury: minor damage is repaired with fillings or bonding; cracks reaching the pulp need root canal therapy (sometimes with a crown); dislodged or knocked-out teeth may be restabilized with a splint or replanted; severely damaged teeth may be extracted with a bone graft; and lost teeth are replaced with bridges or implants.

11. How long does dental trauma take to heal?

Minor soft tissue injuries may heal in less than one week. Tooth trauma typically heals in about four to six weeks unless damage reaches the tooth pulp, in which case full recovery can take several months.

12. Can dental trauma be prevented?

Not always, but you can reduce your risk by wearing a mouth guard during contact sports, wearing a seatbelt in vehicles, not chewing ice, not using your teeth as tools, and not biting your fingernails.

13. What happens if dental trauma is left untreated?

Left untreated, dental trauma can lead to other serious oral health issues, like cavities and infection, as well as an abscessed tooth, tooth loss, pain, difficulty chewing, speech issues, appearance changes, and lower self-esteem.

References

1. Cleveland Clinic. Dental Trauma. Cleveland Clinic. Dec. 4, 2023. https://my.clevelandclinic.org/health/diseases/16916-dental-injuries

2. American Association of Endodontists. Traumatic Dental Injuries. American Association of Endodontists. Accessed October 30, 2026. https://www.aae.org/patients/dental-symptoms/traumatic-dental-injuries/

3. Boyd DH, Kinirons MJ, Gregg TA. A prospective study of factors affecting survival of replanted permanent incisors in children. Int J Paediatr Dent. 2000;10(3):200-205. doi:10.1046/j.1365-263x.2000.00192.x. PMID: 11310112.

4. Knapik JJ, Hoedebecke BL, Rogers GG, Sharp MA, Marshall SW. Effectiveness of mouthguards for the prevention of orofacial injuries and concussions in sports: systematic review and meta-analysis. Sports Med. 2019;49(8):1217-1232. doi:10.1007/s40279-019-01121-w. PMID: 31148073.

5. Magno MB, Nadelman P, Leite KLF, Ferreira DM, Pithon MM, Maia LC. Associations and risk factors for dental trauma: a systematic review of systematic reviews. Community Dent Oral Epidemiol. 2020;48(6):447-463. doi:10.1111/cdoe.12574. PMID: 32893395.

6. Antipovienė A, Narbutaitė J, Virtanen JI. Traumatic dental injuries, treatment, and complications in children and adolescents: a register-based study. Eur J Dent. 2021;15(3):557-562. doi:10.1055/s-0041-1723066. PMID: 33535246.

7. Elleray E, Brizuela M, Pepper T. Trauma to the primary dentition. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; updated June 1, 2023. https://www.ncbi.nlm.nih.gov/books/NBK580475/. PMID: 35593800.

Medical Disclaimer

This article is for informational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.