Ignoring a dental emergency can lead to severe consequences that compromise not only your oral health but also your overall well-being.
When an individual experiences a dental issue, whether it is a knocked-out tooth, unbearable toothache, bleeding gums or signs of infection, this becomes your first priority.
Increased pain is the most immediate concern, as discomfort can distract from daily activities and diminished quality of life but could also include the possibility of an infection.
- When issues are left unaddressed, there is a significant risk of tooth loss, which not only affects aesthetics but also alters bite functionality.
- Infections can spread, leading to even more serious health complications, including potential systemic infections that may require hospitalization.
- Neglecting these issues often escalates the need for more extensive dental treatments, increasing both time and financial investments.
To mitigate these risks, it is essential to maintain good dental hygiene and seek help promptly when problems arise, ensuring that the smile remains not just beautiful, but also healthy.
The short answer: Ignoring a dental emergency rarely makes it go away. Small problems like a cavity, crack or knocked-out tooth tend to turn into bigger ones leading to worse pain, an infection or abscess, a tooth that can no longer be saved, and treatment that costs more and takes longer. In rare cases, an untreated tooth infection can spread and become a medical emergency.
Key Takeaways
- Time matters. A knocked-out adult tooth has the best chance of being saved if it’s put back in within about 30 minutes.
- Pain that stops isn’t always good news. It can mean the nerve has died while the infection keeps spreading.
- Waiting usually costs more. A filling today can become a root canal and crown, or an extraction and implant, later.
- The ER can’t fix teeth. Hospitals can manage pain and infection, but the tooth still needs a dentist.
- Some symptoms can’t wait. Spreading facial swelling, fever, or trouble swallowing or breathing means go to the ER now.
In this article
- What counts as a dental emergency?
- What happens when you wait: a stage-by-stage timeline
- When the pain stops, it’s not always good news
- A knocked-out tooth: the 30-minute window
- The cost of waiting
- Can the ER fix a dental emergency?
- Emergency, urgent, or can it wait?
- Why people wait (and how to get past it)
- Frequently asked questions
What Counts as a Dental Emergency?
A dental emergency is any problem that needs care quickly to stop severe pain or bleeding, treat an infection, or save a tooth. The most common ones we see in Cambridge are:
- Severe or throbbing toothache, especially pain that keeps you up at night
- Swelling in the gums, face or jaw, or a pimple-like bump on the gum
- A knocked-out, loosened or pushed-in tooth
- A cracked or broken tooth
- Bleeding that won’t stop after an injury or extraction
- A lost filling or crown that leaves the tooth painful or sharp
For a full breakdown, see our guide: What is Considered a Dental Emergency?
What Happens When You Wait: A Stage-by-Stage Timeline
Most dental emergencies don’t appear out of nowhere. They are the late stage of a problem that has been building quietly. Here’s how an untreated cavity or crack typically progresses. It can take weeks or months, or happen much faster once infection sets in.
Stage 1: Sensitivity
A twinge with cold, sweets or biting. Decay or a crack has reached the inner layer of the tooth. Usual fix: a filling or bonding, often in a single visit.
Stage 2: Lingering, throbbing pain
Bacteria reach the nerve (pulp). Pain lasts after the cold is gone, throbs on its own, or wakes you at night. Usual fix: a root canal, usually followed by a crown.
Stage 3: The pain goes quiet
The nerve dies. Many people think the problem has fixed itself but it hasn't fixed itself. The infection is still active inside the tooth.
Stage 4: Abscess
Infection collects at the tip of the root. Signs include swelling, pain when biting, a bad taste, or a bump on the gum that drains. The infection starts to dissolve the bone that holds the tooth in place. Usual fix: a root canal if the tooth can be saved, or an extraction.
Stage 5: Spreading infection
Swelling spreads into the cheek, jaw or neck, often with fever and fatigue. This is uncommon, but it is a medical emergency and may need hospital treatment.
Noticing any of these signs? The earlier the stage, the simpler the fix.
Call (226) 887-6483 same-day emergency appointments, emergency dentist on call Sundays.
When the Pain Stops, It’s Not Always Good News
This is one of the most common reasons people skip the dentist. A toothache that was unbearable last week suddenly disappears, and it feels like the crisis has passed.
Sometimes the pain stops because the nerve inside the tooth has died. A dead nerve can’t send pain signals, but the bacteria that killed it are still there, and they keep spreading into the root and the surrounding bone. Weeks or months later, the tooth can flare up again as an abscess, often at a worse time and with fewer options for saving it.
The rule of thumb: if a severe toothache goes away without treatment, book an exam anyway. A quick X-ray tells us whether the tooth has healed or the infection has just gone quiet.
A Knocked-Out Tooth: The 30-Minute Window
With a knocked-out adult tooth, the clock really is ticking. The cells on the root that help reattach the tooth begin to die once the tooth is out of the mouth and drying out. The best chance of saving it is getting it back in place within about 30 minutes.
- Pick it up by the crown (the white part), never the root.
- If it’s dirty, rinse it briefly with milk or water. Don’t scrub it or wrap it in tissue.
- Try to put it back in the socket and gently bite on a clean cloth to hold it there.
- If you can’t, keep it moist in a small container of milk, or inside your cheek if you’re an adult and can do so safely.
- Call us right away at (226) 887-6483.
For children: don’t try to put a knocked-out baby tooth back in, as this can damage the adult tooth developing underneath. Keep the tooth, and call us so we can check your child’s mouth. Learn more about our children’s dentistry.
For first-aid steps for other emergencies, such as a broken tooth, lost crown or bleeding, see What to Do in a Dental Emergency?
The Cost of Waiting
Delaying treatment rarely saves money. The same tooth usually needs more involved and more expensive care the longer it’s left:
| When it’s treated | Typical treatment | Visits | Relative cost |
|---|---|---|---|
| Early (sensitivity, small crack) | Filling or bonding | Usually 1 | $ |
| Nerve involved | Root canal + crown | 2–3 | $$$ |
| Tooth can’t be saved | Extraction, then an implant or bridge to replace it | Several, over months | $$$$ |
| Infection has spread | Hospital care plus dental treatment | Multiple | Highest plus time off work |
A lost tooth also has knock-on effects: neighbouring teeth can drift into the gap, your bite can change, and the jawbone where the tooth used to be gradually shrinks. That’s why replacing a missing tooth is often recommended, and why saving the natural tooth early is almost always the better deal.
We direct-bill most insurance plans so you only pay the difference, and we accept the Canadian Dental Care Plan (CDCP). We’ll always give you an estimate before treatment.
Can the ER Fix a Dental Emergency?
Usually not. In 2012 alone, Ontario hospitals saw almost 58,000 emergency room visits for dental problems for mostly abscesses and toothaches. An estimated cost of at least $30 million. Emergency departments are equipped to manage pain and serious infections, but they generally aren’t set up to fill, repair or root-canal a tooth. Most patients leave with a prescription and a referral back to a dentist, and the original problem is still there.
For most dental emergencies, calling a dentist first gets the problem fixed faster. The exception is the red-flag symptoms below.
Emergency, Urgent, or Can It Wait?
| What to do | Symptoms |
|---|---|
| Go to the ER or call 911 now | Swelling in the face, jaw or neck that is spreading; trouble swallowing or breathing; high fever with dental swelling; a serious injury to the face or jaw; bleeding that won’t stop with firm pressure |
| Call the dentist today | Knocked-out or loosened adult tooth; severe or throbbing toothache; a broken tooth that’s painful or sharp; gum swelling or a bump on the gum; pain when biting |
| Book within a few days | A lost filling or crown with no pain; a small chip with no pain; mild sensitivity to hot or cold |
Don’t wait on swelling. A dental infection that spreads into the floor of the mouth and neck (called Ludwig’s angina) can affect the airway. It’s rare, but it’s exactly why spreading swelling, fever or difficulty swallowing should never be “watched” at home.
Why People Wait (and How to Get Past It)
“I’m worried about the cost.”
Early treatment is almost always the least expensive option. We direct-bill insurance, accept CDCP, and walk you through costs before we start, so there are no surprises.
“I’m nervous about the dentist.”
You’re not alone ! dental anxiety is one of the biggest reasons people put off care. We offer laughing gas, oral sedation and IV sedation (sleep dentistry), so you can get treated comfortably, and we never judge anyone for how long it’s been.
“I can’t get time off.”
We’re open until 7pm on Mondays and Tuesdays, on Saturdays, and we have an emergency dentist on call on Sundays. A same-day visit now is usually far less time away from work than an abscess later.
“It doesn’t hurt anymore.”
See above which can be the most important reason to come in.
How to Prevent Dental Emergencies
- Keep up with regular checkups and cleanings, so we can catch cavities and cracks at Stage 1.
- Wear a mouthguard for contact sports, and a night guard if you grind your teeth.
- Don’t use your teeth to open packages or chew ice, pens or hard candy.
- Get sensitivity or a “weird bite” checked early instead of waiting for pain.
- Have problem wisdom teeth assessed before they flare up.
Frequently Asked Questions
Can a tooth infection go away on its own?
No. Pain from an infected tooth can come and go, and antibiotics can calm the swelling for a while, but the bacteria live inside the tooth or under the gum where your body and medication can’t fully reach them. The infection stays until the source is treated with a root canal, drainage or an extraction.
Can an untreated tooth infection be dangerous?
Yes. It’s uncommon, but an untreated dental abscess can spread into the jaw, face and neck, and in rare cases into the bloodstream (sepsis) or the space under the tongue and around the airway (Ludwig’s angina). Swelling that is spreading, a fever, or trouble swallowing or breathing needs emergency care right away.
How long can I wait to fix a broken or cracked tooth?
If it hurts, is sharp, or a large piece has broken off, call us the same day. Even a painless crack should be seen within a few days: chewing and grinding your teeth can spread a crack deeper into the tooth, and a tooth that splits down to the root usually can’t be saved. Until your visit, chew on the other side and avoid very hot, cold or hard foods.
Should I go to the ER or the dentist for tooth pain?
For most tooth pain, call a dentist first. A dentist can treat the cause the same day, while a hospital emergency department usually can only give you pain relief or antibiotics and send you to a dentist. Go straight to the ER if you have facial or neck swelling that’s spreading, a high fever, trouble swallowing or breathing, or a serious injury to the face or jaw.
Why did my toothache suddenly stop?
Sometimes the pain stops because the nerve inside the tooth has died. That ends the pain signal, but the infection is still there and can keep spreading into the bone. If a severe toothache disappears on its own, book an exam it doesn’t mean the problem healed but you can see if it's going to be a problem later on.
Dental emergency in Cambridge? Don’t wait for it to get worse.
Call (226) 887-6483 or book online.
410 Hespeler Rd, Units 5 & 6, Cambridge · Serving Galt, Preston, Hespeler and the Waterloo Region
Mon–Tue 8am–7pm · Wed–Thu 8am–5pm · Fri–Sat 8am–3pm · Sun: emergency on call
References
- Alliance for Healthier Communities. “Information on Hospital Emergency Room Visits for Dental Problems in Ontario” (Ministry of Health and Long-Term Care IntelliHEALTH data, 2012). Available at: allianceon.org
- Fouad, A.F. et al. “International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 2. Avulsion of permanent teeth.” Dental Traumatology, 36(4): 331–342 (2020).
- American Association of Endodontists. “Knocked-Out Teeth.” Available at: aae.org
- StatPearls. “Ludwig Angina.” NCBI Bookshelf, National Library of Medicine. Available at: ncbi.nlm.nih.gov
