Dental emergency first aid can reduce pain and protect an injured tooth while you arrange professional care, but it does not replace a dental examination. Contact a dentist promptly for severe tooth pain, a knocked-out or badly broken tooth, uncontrolled bleeding, facial swelling, or signs of infection. Call 911 or go to the nearest emergency department for trouble breathing or swallowing, loss of consciousness, a suspected broken jaw, serious head or facial trauma, rapidly worsening swelling of the face or neck, or severe bleeding that will not stop.
Important: The steps below are temporary first aid. Do not delay urgent dental or medical care because the pain or swelling improves.
| Dental emergency | What to do first |
| Knocked-out permanent tooth | Hold it by the crown, gently rinse it only if dirty, reinsert it if this is easy and safe, or keep it in cold milk. Seek immediate dental care. |
| Knocked-out baby tooth | Do not put it back in the socket. Control bleeding with gauze and contact a dentist promptly. |
| Broken or cracked tooth | Rinse gently, save any fragments, apply a cold compress outside the mouth, and arrange urgent assessment. |
| Severe toothache | Rinse with warm water, floss gently if food is trapped, use a cold compress, and follow label directions for a suitable over-the-counter pain medicine. |
| Lost filling or crown | Keep the restoration, avoid chewing on that side, and contact a dentist. Never use household glue. |
| Abscess or facial swelling | Contact a dentist urgently. Seek emergency medical care if breathing or swallowing is affected or swelling is rapidly worsening. |
Dental Emergency First Aid: What to Do Right Away
Stay calm, check for serious injuries, and contact a dental office as soon as possible. For severe facial trauma, loss of consciousness, heavy bleeding, trouble breathing, or trouble swallowing, seek emergency medical care first.
Knocked-Out Permanent Tooth
- Find the tooth and hold it by the crown, not the root.
- If it is dirty, rinse it gently for a few seconds. Do not scrub, scrape, disinfect, or dry it.
- When the person is conscious, cooperative, and not at risk of swallowing the tooth, gently place the permanent tooth back in its socket without forcing it.
- If reinsertion is not possible, keep the tooth moist in cold milk, a tooth-preservation solution, saliva collected in a clean container, or sterile saline. Do not leave it dry.
- Seek immediate dental care. The chance of saving the tooth is generally better when treatment begins quickly.
Do not reinsert a baby tooth. Replanting a primary tooth may damage the developing permanent tooth underneath.
Broken, Chipped, or Cracked Tooth
Rinse the mouth gently with warm water. Save any tooth fragments and bring them to the dentist. Apply a cold compress to the outside of the cheek for short intervals to help with swelling. Avoid chewing on the affected side, and arrange prompt dental care—especially if the tooth is painful, loose, bleeding, or shows a pink or red area inside.
Tooth Pain or Toothache
A toothache may be caused by decay, a crack, gum inflammation, or infection. Rinse with warm water and floss gently if food may be trapped between the teeth. A cold compress outside the mouth may help with swelling. An over-the-counter pain medicine may provide temporary relief when it is safe for you; follow the product label and ask a pharmacist or clinician when you are unsure.
Do not place aspirin or another medication directly on the tooth or gums because it may injure the tissue. Persistent or severe pain needs a dental examination. For additional temporary-care information, see our guide to toothache relief at night.
Lost Filling or Crown
Remove a loose crown or filling from the mouth so it is not swallowed, keep it in a clean container, and contact a dentist. Avoid hard, sticky, very hot, or very cold foods and do not chew on the affected side. A pharmacy temporary dental cement may be used only if the crown fits easily and the product instructions allow it. Never use superglue or another household adhesive.
Dental Abscess or Gum Infection
A dental abscess is an infection that may cause throbbing pain, gum or facial swelling, a bad taste, pus, fever, or tenderness when biting. A warm salt-water rinse may provide temporary comfort, but it does not cure the infection. Do not squeeze, puncture, or attempt to drain an abscess yourself. Contact a dentist urgently.
Seek emergency medical care immediately if swelling makes it difficult to breathe or swallow, spreads rapidly through the face or neck, or is accompanied by severe bleeding, loss of consciousness, or serious facial trauma.
Need an Emergency Dental Assessment in North York?
Contact Smile Avenue Dentistry and describe the injury, pain, bleeding, or swelling. The team can confirm the earliest available appointment. Same-day care may be available depending on appointment availability and the treatment required. For life-threatening symptoms, call 911.
How to Control Bleeding and Swelling
For bleeding from the lips, cheeks, tongue, or gums, apply firm, steady pressure with clean gauze or a clean cloth for about 10 to 15 minutes. Avoid repeatedly lifting the gauze to check the area. If bleeding is heavy, follows a major injury, or does not slow with pressure, seek urgent medical care.
For swelling after an injury, place a cold compress against the outside of the face for short intervals. Do not place ice directly on the skin or inside the mouth. Swelling related to infection still requires urgent assessment even if a cold compress provides temporary relief.
Pain Relief Before You See a Dentist
Over-the-counter pain medicine may provide temporary relief, but it does not treat the cause. Follow the product label and ask a pharmacist or clinician when you are unsure. Some medicines may not be appropriate for children, pregnancy, stomach ulcers, kidney disease, liver disease, bleeding disorders, allergies, or interactions with other medicines.
- Do not exceed the labelled dose.
- Do not combine products that contain the same active ingredient.
- Do not place aspirin, crushed tablets, alcohol, or peroxide directly on the gums or tooth.
- Do not delay dental care because the pain temporarily improves.
First Aid for Dental Injuries
Loose or Partially Dislodged Tooth
Do not push or force the tooth. Avoid biting on it, use a cold compress outside the mouth, and seek urgent dental care. A dentist needs to check the tooth, surrounding bone, and soft tissues.
Cut Lip, Cheek, or Tongue
Rinse gently, apply steady pressure with clean gauze or a clean cloth, and use a cold compress outside the mouth. Seek urgent medical care when the cut is deep, debris is embedded, or the bleeding does not stop.
Jaw or Facial Injury
Do not try to realign the jaw. Keep it supported, avoid eating or drinking, and seek emergency medical care. Call 911 when there is loss of consciousness, breathing difficulty, severe bleeding, a possible neck injury, or other major trauma.
Do Baby Teeth Need Emergency Care?
Yes. Injuries to baby teeth can affect pain, eating, the gums, and the developing permanent teeth. Contact a dentist when a baby tooth is knocked out, pushed into the gums, loosened, fractured, or changes colour after an injury. Do not reinsert a knocked-out baby tooth.
Treatment depends on the child’s age, the tooth involved, the type of injury, and the stage of tooth development. A dentist must assess whether monitoring, protection, pulp treatment, or removal is appropriate; age alone does not determine whether treatment is possible.
Related guide: Common Dental Problems in Children and How to Prevent Them
Dental First Aid Kit Essentials
- Clean gauze and disposable gloves
- A small clean container with a secure lid
- A cold pack wrapped for skin protection
- Dental wax for a sharp orthodontic wire or rough edge
- Temporary dental cement made for oral use
- Contact information for your dentist, pharmacist, and nearest emergency department
Cold milk is usually the most practical storage option for a knocked-out permanent tooth when immediate reinsertion is not possible. A tooth-preservation solution, saliva collected in a clean container, or sterile saline may also be used. Do not let the tooth dry out.
What Not to Do During a Dental Emergency
- Do not place aspirin or medication directly on the gums or tooth.
- Do not scrub, scrape, or disinfect the root of a knocked-out tooth.
- Do not reinsert a knocked-out baby tooth.
- Do not use superglue or household adhesive on a crown or tooth.
- Do not puncture or squeeze an abscess.
- Do not apply heat to facial swelling or a toothache.
- Do not ignore facial swelling, fever, persistent bleeding, or worsening pain.
When to Call a Dentist and When to Go to the ER
| Contact an emergency dentist promptly | Call 911 or seek emergency medical care |
| Knocked-out permanent tooth | Difficulty breathing or swallowing |
| Severe or persistent tooth pain | Major facial or head trauma |
| Broken, cracked, loose, or displaced tooth | Loss of consciousness or possible neck injury |
| Dental abscess, pus, fever, or localized swelling | Rapidly worsening swelling of the face or neck |
| Lost crown or filling with pain or exposed tooth structure | Severe bleeding that does not slow with firm pressure |
Act Quickly, Then Get Professional Care
Dental emergency first aid is designed to protect the injured area and reduce risk until a dentist or medical team can assess the problem. Quick action is especially important for a knocked-out permanent tooth, uncontrolled bleeding, facial swelling, and serious trauma. For urgent dental concerns in North York, contact Smile Avenue Dentistry to confirm the earliest available appointment. After the emergency has been treated, routine preventive care through our dental hygiene services may help reduce future oral-health problems.
Dental Emergency First Aid FAQ
What is the first thing to do in a dental emergency?
Check for breathing problems, severe bleeding, loss of consciousness, or major facial trauma. Call 911 for life-threatening symptoms. Otherwise, protect the injured area and contact a dentist promptly for instructions and an urgent assessment.
Should a knocked-out tooth be put in milk?
A knocked-out permanent tooth may be placed in cold milk when it cannot be safely reinserted. Hold it by the crown, do not scrub the root, and do not let it dry. Do not reinsert a baby tooth.
Can saline be used to store a knocked-out tooth?
Sterile saline may be used when immediate reinsertion is not possible, although cold milk or a tooth-preservation solution is generally preferred. The priority is to keep the tooth moist and reach a dentist immediately.
What is first aid for a severe toothache?
Rinse with warm water, floss gently if food is trapped, use a cold compress outside the mouth, and follow label directions for a pain medicine that is safe for you. Do not place aspirin on the gums. Arrange a dental examination because home care does not treat the cause.
What should I do for a gum infection or dental abscess?
Contact a dentist urgently. Do not squeeze or puncture the swelling. Seek emergency medical care immediately if swelling affects breathing or swallowing, spreads rapidly through the face or neck, or is accompanied by serious illness.
Can I glue a lost crown back on?
Do not use superglue or household adhesive. Keep the crown, avoid chewing on that side, and contact a dentist. A temporary dental cement made for oral use may be suitable only when the crown fits easily and the product directions are followed.
Should a knocked-out baby tooth be put back in?
No. A knocked-out baby tooth should not be reinserted because this may damage the developing permanent tooth. Contact a dentist promptly for an assessment.
