What to Do in a Dental Emergency

Dental emergencies happen without warning -- a tooth knocked out at a weekend game, a crown loose the night before a meeting, a toothache that escalates by midnight. The right response in the first few minutes can make a meaningful difference in the outcome. This guide walks through the most common dental emergencies, describes general first-aid steps supported by guidance from the American Dental Association (ADA) and the American Association of Endodontists (AAE), and explains how to reach professional care quickly. It does not replace the judgment of a licensed dentist. Talk to your dentist.

When It Is a Medical Emergency: Call 911

Most dental emergencies are urgent but not life-threatening. Some are.

Call 911 or go to the nearest emergency room -- not a dental office -- in these situations: facial or neck swelling spreading rapidly and pressing on your airway; uncontrolled bleeding that does not slow after 10 to 15 minutes of firm pressure; a suspected jaw fracture following trauma; a blow to the head producing confusion or unconsciousness; or high fever combined with spreading facial swelling and difficulty opening the mouth, which may indicate Ludwig's angina -- a rapidly spreading bacterial infection of the floor of the mouth that the Mayo Clinic classifies as a medical emergency requiring immediate hospital care.

Hospital emergency departments can manage pain, prescribe antibiotics for spreading infection, stabilize trauma, and address airway concerns. They are generally not equipped to perform dental procedures. Once medically stable, a follow-up with a dentist is the next step for definitive dental treatment.

Knocked-Out Tooth: Act Within 60 Minutes

A knocked-out permanent tooth -- called an avulsed tooth by dental professionals -- is one of the few dental emergencies where time is the central variable. The American Association of Endodontists' Save Your Tooth initiative states that a knocked-out tooth has the best chance of successful reimplantation when the tooth is reinserted or placed in proper storage and a dentist is reached within 30 to 60 minutes. After that window, root surface cells begin to die and the likelihood of reimplantation drops sharply.

Immediate steps for a knocked-out permanent tooth:

1. Pick up the tooth by the crown -- the white portion normally visible above the gumline. Do not touch the root. The root surface contains periodontal ligament cells critical to reimplantation success, according to the American Association of Endodontists.
2. If the tooth is dirty, rinse it gently under cool running water for no more than 10 seconds. Do not scrub, use soap, or wrap it in dry tissue.
3. If the patient is an adult or older child not at risk of swallowing it, try to reinsert the tooth into the socket. Push gently until the crown is level with adjacent teeth, then bite softly on gauze to hold it in place.
4. If reinsertion is not possible, keep the tooth moist. In order of preference per the American Association of Endodontists Save Your Tooth guidelines: saliva (between the cheek and gum), cold whole milk, or a commercial preservation kit such as Save-A-Tooth. Plain water is an acceptable last resort but can damage root cells with prolonged contact.
5. Call a dentist immediately and go directly. Call ahead so the office can prepare.

Do not attempt to reimplant a knocked-out primary (baby) tooth. The American Dental Association advises against it because doing so can interfere with the development of the permanent tooth beneath. Contact your child's dentist for guidance.

Illustration: five-step sequence for a knocked-out permanent tooth. Time is the critical variable -- the goal is a dentist's chair within 30 to 60 minutes.

Cracked or Broken Tooth: Protect the Area and See a Dentist Promptly

Cracked and broken teeth range widely in severity, from a minor cosmetic chip to a fracture extending through the root. The American Dental Association notes that cracks and fractures are among the leading causes of tooth loss in adults and that prompt treatment affects whether a tooth can ultimately be saved.

Rinse gently with warm water and apply a cold compress to the cheek on the affected side -- use a cloth between ice and skin, 20 minutes on and 20 minutes off. If gum tissue is bleeding, apply gentle pressure with clean gauze until it slows. Over-the-counter dental cement, temporary filling material, or dental wax can be placed over a sharp or jagged edge to protect the tongue and cheek until you reach a dentist. These are interim measures only and do not address any underlying nerve or root involvement.

A small cosmetic chip with no pain can usually wait for the next available appointment. A crack with significant pain -- particularly sharp pain when biting or a lingering ache after cold food or drink -- warrants same-day or next-day evaluation. Severe, constant, or radiating pain may indicate nerve involvement that your dentist can evaluate and discuss treatment options for, which may include a dental crown or, in some cases, root canal treatment. Learn more about typical costs in our guide How Much Does a Root Canal Cost?.

Lost Filling or Crown: Temporary Fixes Buy Time

A filling or crown that comes loose or falls out exposes the underlying tooth to sensitivity and potential further damage, but it is rarely a medical emergency unless the exposed tooth causes severe pain. Retrieve the crown if possible and bring it to your appointment -- your dentist may be able to re-cement an intact crown rather than fabricating a new one.

Until you can be seen, over-the-counter temporary dental cement can re-seat a crown or cover an open cavity. To re-seat a crown, clean both surfaces gently, apply a thin layer of cement inside the crown, and press it firmly onto the tooth. Bite down on gauze to seat it and avoid sticky or hard foods on that side. If a lost filling is causing sharp sensitivity, a temporary filling material applied per package instructions can reduce discomfort. See your dentist within a few days; same day if pain is severe.

Severe Toothache or Suspected Abscess: Do Not Wait

A toothache that is severe, persistent, or accompanied by swelling, fever, a foul taste, or swollen lymph nodes in the neck may indicate a dental abscess -- an infection at the tooth root or in surrounding gum tissue. The American Dental Association states that a dental abscess will not resolve on its own and that delaying treatment allows the infection to spread to neighboring teeth, the jaw, or beyond.

Rinse gently with warm salt water -- roughly half a teaspoon of table salt in eight ounces of water -- which the American Dental Association notes can help reduce bacteria and soothe irritated gum tissue temporarily. Over-the-counter pain relievers such as ibuprofen or acetaminophen can be taken according to package directions; follow all label instructions and consult a pharmacist or physician if you have questions about which is appropriate for you. Do not apply aspirin directly to gum tissue; the American Dental Association warns that direct contact can cause a chemical burn to soft tissue.

No home remedy is a substitute for professional care. If swelling begins to spread toward your throat or you develop difficulty breathing or swallowing, this becomes a medical emergency -- call 911 immediately.

Illustration: three-path urgency guide. When in doubt, call your dentist for guidance on how quickly you should be seen.

Emergency Type Summary

The table below gives a quick overview of the most common dental emergencies, the immediate first-aid steps appropriate for each, and general guidance on how quickly professional care should be sought. This is a general reference only; your situation may differ. Contact your dentist for advice specific to your circumstances.

Source for timing guidance: American Dental Association emergency care resources; American Association of Endodontists Save Your Tooth guidelines.

How to Find an Emergency Dentist

Call your regular dentist first. Most dental offices reserve slots for urgent cases, and a team that already has your records can speed your care. Even after hours, most practices have a recorded message directing urgent callers to an on-call dentist or emergency line.

Use the American Dental Association's Find-a-Dentist tool. Available at ada.org, this directory lets you search by ZIP code. Explaining clearly that you have a dental emergency when you call increases the likelihood of being worked in the same day.

Contact your state dental association. Many state dental associations maintain referral lines for patients who need to locate a dentist on short notice. A search for "[your state] dental association emergency referral" typically surfaces the right resource.

Search for urgent care dental clinics. Some metropolitan areas have walk-in dental clinics with extended hours. These vary in quality and may not have your records, but they can provide temporary stabilization or pain relief while you arrange follow-up with your regular dentist.

Hospital emergency departments. Emergency rooms can manage pain, prescribe antibiotics for spreading infection, and address airway or trauma concerns, but they generally cannot perform dental procedures. The American Dental Association notes that millions of emergency room visits each year are for dental pain that could have been treated in a dental office. An ER visit addresses the immediate medical concern; dental follow-up is still required.

When calling any office during an emergency, be ready to describe the problem, the location and intensity of pain, any visible damage or swelling, and whether you have taken any medication.

If you do not currently have a regular dentist, our guide How to Choose a Dentist: What to Look For explains what to look for when evaluating a new practice.

Preventing Future Dental Emergencies

Prevention does not eliminate all risk, but the American Dental Association recommends several evidence-supported steps. Wearing a properly fitted mouthguard during contact sports is one of the most effective ways to reduce dental trauma risk; a custom-fitted guard from a dentist generally provides better protection than an over-the-counter boil-and-bite style, according to the American Dental Association. Avoiding using teeth as tools -- to open packages, crack nuts, or remove bottle caps -- prevents a meaningful share of non-trauma fractures. Regular dental examinations allow your dentist to detect small cracks, early decay, or weakened restorations before they escalate; the American Dental Association recommends examination intervals determined by each patient's individual oral health status.

If cost makes routine care difficult to access, community health centers (Federally Qualified Health Centers) offer sliding-scale fees and dental school clinics provide care at reduced cost under faculty supervision. Our guide on the cost of dental care without insurance covers these options, and our guide on How Much Does a Root Canal Cost? provides sourced cost ranges for one of the most common treatments following a dental emergency.