In brief
If the problem is the tooth, contact a dentist. If the problem threatens your breathing, swallowing, vision or life, go to the hospital or call 911. That includes difficulty breathing or swallowing, swelling spreading to the eye or neck, fever with facial swelling, bleeding that will not stop with firm pressure, and serious facial or jaw trauma. Emergency departments can stabilize you and manage infection and pain, but they generally cannot repair, fill or extract the tooth itself.
Key takeaways
- Hospitals stabilize and manage complications; they generally cannot treat the tooth itself.
- Toothache, lost fillings, broken crowns and knocked-out teeth belong at a dental office.
- Breathing or swallowing difficulty, spreading facial swelling and major trauma belong in hospital.
- Many ER visits for tooth pain end with painkillers, antibiotics and a referral back to a dentist.
The simplest rule: if the problem is the tooth, go to a dentist; if the problem threatens your breathing, swallowing, vision or life, go to the hospital or call 911. A dental office can repair, fill, splint or remove the tooth that is causing trouble. An emergency department can stabilize you, manage a serious infection and treat facial injuries, but it generally cannot fix the tooth itself.
Choosing the right place first can save hours of waiting and pain. In a serious infection or injury, choosing the hospital first can matter far more than that. This guide explains which symptoms point to each setting, what each one can do and how to manage until you are seen.
When should you go to the hospital for a dental problem?
Go to the nearest emergency department, or call 911, if you or someone you are caring for has any of the following:
- Difficulty breathing or swallowing. This includes noisy breathing, not being able to swallow your saliva, drooling because swallowing hurts, or a swollen, firm area under the tongue or jaw.
- Swelling spreading to the eye or neck. Swelling that is closing an eye, moving down the neck or spreading quickly across the face.
- Fever with facial swelling. A fever, chills or feeling very unwell alongside dental swelling can mean infection is spreading beyond the tooth.
- Uncontrolled bleeding. Bleeding from the mouth that does not stop after 15 to 20 minutes of firm, steady pressure with gauze or a clean cloth.
- Facial trauma. A suspected broken jaw, a jaw that will not open or close properly, serious facial injuries, deep cuts to the face or lips, or any injury involving loss of consciousness, confusion, repeated vomiting or a severe headache.
These are medical emergencies. Do not wait for a dental appointment and do not wait to see whether the symptoms settle overnight.
Call 911 or go to the emergency department right away for trouble breathing, trouble swallowing, swelling spreading to the eye or neck, fever with facial swelling, uncontrolled bleeding or facial trauma.
Why these symptoms are treated so seriously
A dental abscess usually stays close to the tooth, but sometimes infection spreads into the tissues of the face, the floor of the mouth or the neck. Swelling in these areas can press on the airway. Infection near the eye can also spread. These situations can become serious quickly and need hospital care, which may include intravenous antibiotics, imaging and drainage.
Facial trauma needs a similar approach. A blow hard enough to break teeth can also fracture the jaw or cause a head injury, and those need to be assessed before anyone thinks about the teeth.
When should you go to a dentist instead?
Most dental problems, even painful ones, are best handled at a dental office. Contact a dentist promptly for:
- a severe or throbbing toothache without the hospital warning signs above
- a knocked-out adult tooth, which is very time-sensitive
- a broken, cracked or chipped tooth
- a lost filling or a crown that has come off
- a tooth that has been loosened or pushed out of position
- a small swelling or pimple on the gum near a tooth, without fever or spreading
- bleeding after a dental procedure that slows with pressure
- a broken denture or a sharp edge cutting the cheek or tongue
These problems need dental tools and dental training: fillings, root canal treatment, extractions, splinting a loosened tooth or recementing a crown. Our emergency dentistry page explains how York Street Dental Centre handles urgent problems, and what counts as a dental emergency explains which issues need attention quickly and which can wait a few days.
Dentist or hospital: a quick comparison
| Situation | Where to go first |
|---|---|
| Toothache, even severe, with no swelling or fever | Dental office |
| Knocked-out adult tooth, no other injuries | Dental office, as fast as possible |
| Broken tooth, lost filling or crown | Dental office |
| Small gum swelling near one tooth, no fever | Dental office, promptly |
| Facial swelling with fever or feeling very unwell | Hospital emergency department |
| Swelling spreading to the eye or down the neck | Hospital emergency department or 911 |
| Difficulty breathing or swallowing | Call 911 |
| Bleeding that will not stop with firm pressure | Hospital emergency department or 911 |
| Suspected broken jaw or head injury | Hospital emergency department or 911 |
| Knocked-out tooth plus head injury | Hospital first; save the tooth and mention it |
What can the emergency department do for a toothache?
Emergency physicians focus on what threatens your overall health. For a dental problem, they may:
- assess whether an infection is spreading and whether your airway is at risk
- prescribe pain relief or antibiotics when appropriate
- drain a dangerous abscess or arrange for someone who can
- order imaging for a suspected jaw fracture
- stitch cuts to the lips, tongue or face
- refer you to a dentist or another provider for follow-up
What the emergency department usually cannot do is treat the tooth itself. Most hospitals do not have dentists or dental equipment available in the emergency department. A cavity cannot be filled there, an infected nerve cannot be treated, and a broken tooth cannot be restored. That is why many emergency visits for uncomplicated tooth pain end with a prescription and advice to see a dentist.
Why seeing a dentist first often saves time
When symptoms allow, going to a dental office first usually skips a step. At a dental appointment, the dentist can examine the tooth, take X-rays and treat the cause. Depending on the problem, that might mean:
- cleaning out and sealing an infected tooth with root canal treatment
- removing a tooth that cannot be saved
- placing a temporary or permanent filling
- smoothing or protecting a broken tooth
- recementing a crown that has come off
- splinting a loosened or repositioned tooth
Even when treatment must be done in stages, you leave with a plan for the tooth rather than only a plan for the pain.
What if it happens at night or on the weekend?
York Street Dental Centre is open Monday to Friday. If a dental problem starts outside office hours:
- Check for red flags first. Difficulty breathing or swallowing, swelling spreading to the eye or neck, fever with swelling, uncontrolled bleeding or facial trauma all mean going to the hospital or calling 911, whatever the time.
- If there are no red flags, manage the pain at home and contact the dental office as early as possible on the next business day.
- For a knocked-out adult tooth, follow first-aid steps immediately and seek care as quickly as you can. Time matters for saving the tooth.
- If you are unsure, Ontario’s Health811 service (dial 811) offers free advice from a registered nurse, day or night.
How can you manage dental pain until you are seen?
These steps can make you more comfortable while you arrange care. They do not replace treatment.
- Take over-the-counter pain relief exactly as directed on the package, and check with a pharmacist if you take other medicines or have health conditions.
- Use a cold compress on the outside of the cheek, 10 to 15 minutes at a time, for swelling or injury.
- Rinse gently with warm salt water to keep the area clean.
- Keep your head raised when resting, which may ease throbbing pain.
- Avoid very hot, cold, sweet or hard foods on the sore side.
- Do not place aspirin or crushed tablets against the gum. They can burn the tissue.
- Do not apply heat to a facial swelling.
- Do not take leftover antibiotics. They may be the wrong medicine and can hide worsening infection.
If any red-flag symptom develops while you wait, go to the hospital.
For more home-care detail, see what to do for a severe toothache.
When are both a hospital and a dentist involved?
Some emergencies need both settings, one after the other.
Spreading dental infection
A serious infection may be treated in hospital first with antibiotics, imaging and drainage. Once you are stable, the tooth that caused it still needs dental treatment, often a root canal or extraction. Without that step, the infection may come back. Facial swelling and tooth pain explains the warning signs in more detail.
Facial and dental injuries
After a fall, sports injury or car accident, the hospital assesses the head, jaw and face first. Broken or displaced teeth are then treated by a dentist. If a tooth has been knocked out, bring it with you and tell the hospital team, but do not delay care for a head injury to deal with the tooth.
The order is always the same: make sure the person is safe, then treat the tooth.
What about children and older adults?
The same red flags apply at every age. Children can become unwell quickly with a dental infection, so facial swelling with fever, lethargy or difficulty swallowing in a child needs urgent medical care. For a knocked-out baby tooth, do not try to put it back in, and contact a dentist for advice.
Older adults, and anyone with diabetes, a weakened immune system or other significant health conditions, may have fewer obvious symptoms during an infection. If you care for someone in these groups, it is reasonable to seek care sooner rather than later.
What should you tell the dental office when you call?
Clear details help the dental team judge how urgent your situation is and what to prepare. Before you call, try to note:
- Where the problem is. Which tooth or side of the mouth, upper or lower.
- When it started and whether it is getting better, worse or staying the same.
- What the pain is like. Sharp, throbbing, constant, or only when biting or drinking something cold.
- Swelling. Where it is, how large it is and whether it is spreading.
- Fever or feeling unwell. Take your temperature if you can.
- Injuries. How the injury happened and whether any teeth are loose, broken or missing.
- Medications and health conditions. Especially blood thinners, diabetes or anything that affects healing or infection.
If you mention a symptom that sounds like a medical emergency, you will be advised to go to hospital first. That is not being turned away; it is getting you to the right care faster.
What should you bring if you go to the hospital?
If you do need the emergency department, a little preparation can help the team there and your dentist afterward:
- your Ontario health card
- a list of your medications and allergies
- a knocked-out tooth, kept in milk or in a clean container with your saliva, if the injury involved one
- any broken pieces of tooth or a crown that came off
- the name and phone number of your dental office
Ask for a copy of any discharge notes or imaging results. Bringing them to your dental follow-up avoids repeating information and helps plan treatment for the tooth.
How can you lower the chance of a dental emergency?
Not every emergency can be prevented, but many start as small problems that grew. A few habits make a real difference:
- keep up regular checkups so decay, cracks and failing fillings are found early
- do not ignore a tooth that has started to ache or become sensitive
- wear a mouthguard for contact sports and a nightguard if you grind
- avoid chewing ice, hard candy and popcorn kernels
- finish any recommended treatment, such as a root canal or crown, rather than stopping after the pain eases
Our article on why preventive dental care matters explains how routine care can help catch problems before they become urgent.
Getting urgent dental help in Cornwall
For dental problems without hospital warning signs, call York Street Dental Centre at 118 York Street as early in the day as you can. Describe what is happening: where the pain or swelling is, how long it has lasted, whether you have a fever and whether there has been an injury. Our team will advise the appropriate next step. If what you describe sounds like it needs medical care first, we will tell you.
We see children, adults and seniors, and new patients do not need a referral. Patients call us from across Cornwall, including downtown, Eamer’s Corners and Churchill Heights, as well as from Cornwall Island (Akwesasne) and Lakeview Heights. For the hospital warning signs, go to the nearest emergency department or call 911.
Contact the clinic
If you have significant tooth pain, a broken tooth, a lost crown or filling or another urgent dental concern without hospital warning signs, call York Street Dental Centre at (613) 932-1620 or contact us. For non-urgent concerns, you can also request an appointment online. Learn more about our approach to emergency dentistry.
Frequently asked questions
Will the hospital pull my infected tooth?
Generally no. Most emergency departments do not have dental staff or equipment for extractions. They can control pain and infection, then refer you to a dentist for the tooth itself.
It is the middle of the night and my tooth is unbearable. What now?
If you have red-flag symptoms — swelling affecting breathing, swallowing, the eye or neck — go to the emergency department. Otherwise, manage the pain with package-directed medication, cold compresses and an elevated head, and contact the dental office as early as possible.
Should I take antibiotics I have at home first?
No. Leftover antibiotics may be the wrong drug or dose, can mask symptoms while infection spreads, and complicate treatment. Antibiotics should be prescribed for the specific situation.
Is a child's dental emergency handled differently?
The same red flags apply — breathing, swallowing, spreading swelling and major trauma go to hospital. For tooth-specific problems, contact a dental office promptly, and never reinsert a knocked-out baby tooth.
Should I call 911 or drive to the emergency department?
Call 911 if someone is struggling to breathe, cannot swallow, has swelling that is rapidly getting worse, is losing a lot of blood or has been knocked unconscious. Do not drive yourself if you feel faint, confused or short of breath. For serious but stable symptoms, having someone drive you to the nearest emergency department is reasonable.
If the hospital treated my dental infection, do I still need a dentist?
Yes. Hospital care such as antibiotics or drainage controls the infection, but the source, usually a decayed, cracked or failing tooth, is still there. Without dental treatment such as a root canal or extraction, the infection is likely to return. Book a dental visit as soon as the hospital advises it is safe.
Sources
- Canadian Dental Association — Dental Emergencies
- American Dental Association (MouthHealthy) — Emergency Care for Dental Problems
- Cleveland Clinic — Dental Emergencies
About the author
This article was written by the York Street Dental Centre Team and reviewed for clinical accuracy by the York Street Dental Centre dental team. York Street Dental Centre is a family dental office at 118 York Street, Cornwall, Ontario K6J 3Y8, providing general, preventive, restorative, and cosmetic dental care for patients of all ages.
Our articles explain common dental questions in plain language, cite reputable health and government sources where relevant, and are updated when guidance changes. Read our editorial policy or learn more about our practice.
This content is intended for general educational purposes and does not replace an examination, diagnosis or personalized treatment recommendation from a dental professional.