A dental emergency can happen at any time — a sudden toothache in the middle of the night, a knocked-out tooth during a weekend hockey game, or a broken crown while travelling. Knowing how to respond in those first critical minutes can mean the difference between saving and losing a tooth, and can significantly reduce pain and complications before you reach professional care.
What Counts as a Dental Emergency?
Not every dental issue requires immediate attention, but some situations demand urgent care. True dental emergencies include a knocked-out permanent tooth, a cracked or fractured tooth with pain or bleeding, severe toothache that doesn’t respond to over-the-counter pain relief, uncontrolled bleeding from the mouth, swelling in the face or jaw that’s getting worse, and an abscess or infection causing fever and swelling.
Issues like a minor chip without pain, a lost filling that isn’t causing discomfort, or slight sensitivity can usually wait for a regular appointment. When in doubt, call your dentist’s emergency line — most practices have after-hours contact options and can help you determine whether you need immediate care.
Knocked-Out Tooth: Every Minute Counts
A knocked-out permanent tooth is one of the most time-sensitive dental emergencies. If you act quickly, there’s a good chance the tooth can be successfully reimplanted. Pick up the tooth by the crown — the white part you can see when you smile — and avoid touching the root. If the tooth is dirty, gently rinse it with milk or saline solution. Do not scrub it or use soap, and never wrap it in tissue or let it dry out.
If possible, try to place the tooth back in its socket and hold it there by gently biting on a clean cloth. If you can’t reinsert it, place the tooth in a container of cold milk, saline solution, or your own saliva. Regular water is a last resort, as it can damage the root cells. Get to a dentist within 30 minutes if at all possible — the odds of saving the tooth decrease significantly after an hour.
Important: this advice applies only to permanent teeth. If a child knocks out a baby tooth, do not try to reimplant it, as this can damage the developing permanent tooth beneath. Still see a dentist to check for other injuries.
Cracked or Broken Tooth
If you crack or break a tooth, rinse your mouth gently with warm water to clean the area. Apply a cold compress to the outside of your cheek near the injury to reduce swelling — 20 minutes on, 20 minutes off. If you can find the broken piece, save it in milk and bring it to your dentist, though in most cases the fragment cannot be reattached.
Avoid chewing on the affected side. If the break has left a sharp edge that’s cutting your tongue or cheek, you can cover it temporarily with dental wax, sugar-free gum, or even a small piece of plastic wrap. Over-the-counter pain relievers like ibuprofen can help manage discomfort, but avoid placing aspirin directly on the gum tissue, as this can cause chemical burns.
Severe Toothache
A sudden, intense toothache often signals an infection or abscess that needs professional treatment. While waiting to see your dentist, rinse your mouth with warm salt water — about half a teaspoon of salt in a cup of warm water. This can help reduce bacteria and draw out some of the infection.
Take over-the-counter anti-inflammatory medication like ibuprofen as directed on the package. Avoid extremely hot or cold foods and drinks, which can intensify the pain. If you notice swelling, a cold compress on the outside of your cheek can help. Do not apply heat to a swollen area, as this can worsen the infection.
If the pain is accompanied by fever, facial swelling that’s spreading, difficulty breathing or swallowing, or a foul taste in your mouth, seek emergency medical care immediately. These can be signs of a serious infection that may require hospital treatment.
Lost Filling or Crown
A lost filling or crown isn’t always a true emergency, but the exposed tooth can be sensitive and vulnerable to further damage. If a crown comes off, try to slip it back over the tooth as a temporary measure. You can use a small amount of denture adhesive or toothpaste to hold it in place until you see your dentist. Do not use regular glue.
For a lost filling, you can place a piece of sugar-free gum into the cavity or use temporary dental cement available at most pharmacies. Clove oil, applied with a cotton ball, can help numb the area if you’re experiencing sensitivity. Avoid chewing on that side and see your dentist as soon as reasonably possible.
Soft Tissue Injuries
Cuts, tears, or puncture wounds to the lips, tongue, cheeks, or gums can bleed heavily and look alarming. Rinse the area gently with warm salt water. Apply firm pressure with a clean gauze pad or cloth for 15 to 20 minutes. If the bleeding doesn’t stop, continue applying pressure and head to an emergency room.
For a bitten tongue or lip, clean the area and apply a cold compress to reduce swelling. Most minor soft tissue injuries heal on their own within a week or two. However, deep cuts, wounds that won’t stop bleeding, or injuries caused by a dirty or rusty object need professional medical attention and may require stitches or a tetanus booster.
Building Your Dental Emergency Kit
Every household should have a basic dental emergency kit. Stock it with sterile gauze pads, a small container with a lid for transporting a knocked-out tooth, over-the-counter pain relievers, temporary dental cement from the pharmacy, dental wax for covering sharp edges, clove oil for numbing, a cold pack, and your dentist’s emergency contact number.
If your family is active in contact sports, invest in custom-fitted mouthguards from your dentist. They offer far better protection than boil-and-bite versions from sporting goods stores and can prevent many dental emergencies before they happen.
When to Go to the Emergency Room vs. Your Dentist
Most dental emergencies are best handled by a dentist, who has the specialized tools and training for dental injuries. However, head to your nearest hospital emergency room if you’re experiencing uncontrollable bleeding that won’t stop after 20 minutes of firm pressure, a possible jaw fracture, severe facial swelling affecting your breathing or swallowing, a dental injury combined with a head injury or loss of consciousness, or signs of a spreading infection with high fever.
Emergency rooms can manage pain, control bleeding, treat infections with antibiotics, and stabilize injuries, but they typically cannot perform definitive dental repairs. You’ll still need to follow up with your dentist afterward.
Finding Emergency Dental Care in Canada
Many dental offices reserve time slots for emergency cases and offer after-hours phone lines. When you call, describe your symptoms clearly and follow their instructions. If your regular dentist isn’t available, you can search for emergency dental providers in your area.
Need to find a dentist who handles emergencies near you? Search Smile Directory to find dental professionals across Canada, including those offering emergency and after-hours care.