It’s 10pm on a Tuesday. Your tooth is throbbing. You’re wondering whether to tough it out until morning, call an emergency dentist now, or just take more painkillers and hope it settles.
I’ve been a dentist in Canterbury for nearly 20 years, and this scenario plays out constantly. Patients call at all hours, sometimes in genuine emergencies, sometimes with problems that could safely wait a few days.
The trouble is, most people can’t tell the difference. They either panic and rush to A&E for minor issues, or they ignore serious warning signs until problems become catastrophic.
So let me clear this up once and for all. Here are five signs that mean you need to see a dentist immediately, not tomorrow or next week. Plus one common “emergency” that actually can wait.
SIGN 1: SWELLING THAT’S SPREADING OR AFFECTING BREATHING
Why this is urgent: Dental infections can spread rapidly. What starts as a small bump on your gum can progress to swelling that closes your airway within hours.
What to look for:
Your face, jaw, or neck is swelling noticeably. The swelling feels hot to touch and is getting bigger rather than staying the same size. You’re developing a fever. Most concerning: you’re finding it harder to swallow or you feel short of breath.
This is a dental abscess that’s spreading beyond the tooth into surrounding tissues. Left untreated, the infection can enter your bloodstream (sepsis) or compromise your airway.
What to do: Call an emergency dentist immediately. If swelling is affecting your breathing or swallowing significantly, go straight to A&E. Don’t wait until morning. Don’t hope it improves on its own.
My experience: I’ve treated dental abscesses that patients ignored for days, assuming they’d resolve. By the time they came in, the infection had spread to their neck and they needed hospital admission for IV antibiotics. Caught early, the same infection could have been drained in surgery and treated with oral antibiotics.
SIGN 2: A KNOCKED-OUT ADULT TOOTH
Why this is urgent: Timing is everything with avulsed (knocked-out) teeth. The chances of saving the tooth drop dramatically after 30-60 minutes.
What to look for:
Your tooth has been completely knocked out of its socket, usually from sports injury, accident, or trauma. This applies to permanent adult teeth only. If a child’s baby tooth is knocked out, don’t try to reinsert it (call for advice, but it’s not the same emergency).
What to do immediately:
Find the tooth. Pick it up by the crown (the white part you can see when it’s in your mouth), never by the root. If it’s dirty, rinse it briefly in milk or saline solution. Do not scrub it or use tap water.
If you’re able, try to reinsert it into the socket immediately. Push it in gently but firmly. If it won’t go in or you’re worried about doing this, keep it moist by:
- Storing it in milk
- Placing it inside your cheek (if you won’t accidentally swallow it)
- Using a tooth preservation kit if you happen to have one
Then get to a dentist within 30 minutes if humanly possible. Every minute counts.
Why the rush: The ligament cells on the tooth root die quickly when exposed to air. If they die, the tooth won’t successfully reattach even if replanted. But if we get it back in the socket while those cells are still alive, the tooth can fuse back into the bone and function for decades.
I’ve saved knocked-out teeth that patients brought in within 20 minutes, kept moist in milk. I’ve also seen teeth that sat dry on a bathroom counter for three hours. Those teeth can sometimes be replanted, but long-term success is poor. Time matters enormously.
SIGN 3: UNCONTROLLED BLEEDING
Why this is urgent: While mouths bleed easily because of their rich blood supply, bleeding that won’t stop indicates a serious problem.
What to look for:
You’re bleeding from your mouth (tooth socket, gum, cheek, tongue) and it’s not slowing down after 30-45 minutes of continuous pressure. The blood is soaking through multiple pieces of gauze. You’re spitting out large clots. You feel lightheaded or dizzy.
This might happen after tooth extraction, injury, biting your cheek or tongue, or sometimes spontaneously with certain medications or blood disorders.
What to do:
Apply firm, continuous pressure to the bleeding area using clean gauze or a clean cloth. Don’t keep checking if it’s stopped every two minutes. You need sustained pressure for at least 20 minutes without peeking.
Bite down on a dampened tea bag placed over the socket if bleeding is from a tooth extraction site (tannins in tea help clotting).
Stay upright. Don’t lie flat, which increases blood pressure in your head.
If bleeding hasn’t slowed significantly after 45 minutes of proper pressure, call an emergency dentist. If bleeding is very heavy or you’re feeling faint, go to A&E.
When I worry: Patients on blood thinners (warfarin, rivaroxaban, apixaban, clopidogrel) are at higher risk of prolonged bleeding. If you’re on these medications and bleeding won’t stop, seek help sooner rather than later. Mention your medications immediately when you call or arrive.
SIGN 4: SEVERE PAIN THAT WON’T RESPOND TO PAINKILLERS
Why this is urgent: Dental pain severe enough that maximum-dose over-the-counter painkillers barely touch it indicates serious infection or nerve inflammation requiring immediate treatment.
What to look for:
Your tooth pain is extreme. You’ve taken the maximum recommended dose of ibuprofen and paracetamol together (400mg ibuprofen plus 1000mg paracetamol, up to four times daily) and the pain is still unbearable. You can’t sleep. You can’t concentrate on anything else. The pain radiates to your ear, jaw, or temple. Hot and cold trigger agony.
What to do:
Call an emergency dentist. Explain how severe the pain is and that painkillers aren’t helping. We’ll get you in same-day.
While waiting, continue alternating ibuprofen and paracetamol (unless you have medical reasons not to take them). Apply cold compresses to your cheek. Avoid hot foods and drinks which often trigger severe pain. Sleep propped up rather than lying flat.
Why this matters: This level of pain usually indicates either severe dental abscess or irreversible pulpitis (dying nerve tissue). Both require urgent treatment. The infection won’t resolve on its own, and the pain won’t magically disappear. It will only worsen.
I see patients who’ve suffered for weeks with this level of pain, taking excessive painkillers and barely functioning. Once we drain the abscess or start root canal treatment, relief is immediate. There’s no medal for suffering. Get it sorted.
Important distinction: Moderate toothache that’s annoying but manageable with painkillers can usually wait a few days for a routine appointment. Severe pain that’s ruining your life needs same-day treatment.
SIGN 5: SUSPECTED JAW FRACTURE
Why this is urgent: Jaw fractures need prompt assessment and treatment to heal properly and prevent complications.
What to look for:
You’ve had significant facial trauma (car accident, assault, bad fall, sports injury). Your jaw hurts intensely. You can’t close your mouth properly or your teeth don’t fit together right when you bite. You can’t open your mouth fully. Your jaw is noticeably misaligned. You’re drooling because you can’t close your mouth. There’s numbness in your lip or chin.
What to do:
Go to A&E. Suspected jaw fractures need X-rays or CT scans, which dentists can’t provide. A&E will image your jaw, assess the fracture, and refer you to maxillofacial surgery if needed.
Don’t try to eat solid foods. Stick to liquids or very soft foods that require no chewing. Support your jaw gently with your hand if movement is painful.
My role: While you should go to A&E for suspected fractures, once they’re treated (whether surgically or conservatively), you’ll need dental follow-up to ensure your bite is correct and teeth haven’t been damaged. We work with maxillofacial colleagues regularly on these cases.
THE ONE “EMERGENCY” THAT CAN USUALLY WAIT: LOST FILLINGS AND CROWNS
Here’s what often gets treated as an emergency but genuinely isn’t in most cases: lost fillings or crowns.
Why it feels urgent: Your tooth feels weird. There’s a hole where your filling was. Your crown fell off and you have a stubby tooth showing. It might be sensitive. You’re worried something terrible is happening.
Why it usually can wait: Unless you’re in severe pain or the exposed tooth is extremely sensitive, lost fillings and crowns are problems, but not emergencies. They can safely wait a few days for a normal appointment.
What to do:
If you’ve lost a crown, clean it and try reattaching it temporarily using dental cement from a pharmacy (or even toothpaste as a very short-term fix). Don’t use superglue, which is toxic and makes professional reattachment difficult.
Avoid chewing on that side. Stay away from very hot, cold, or sweet foods that might cause sensitivity.
Call the dentist for an appointment within a few days. We’ll assess whether the filling needs replacing or if the crown can be re-cemented.
When lost fillings DO become emergencies: If the tooth becomes severely painful or develops sharp edges cutting your tongue or cheek, call sooner. But in most cases, this is a “book an appointment this week” problem, not a “drop everything and call immediately” emergency.
Personal observation: About half the “emergency” calls we get are lost fillings or crowns where patients aren’t in pain, just worried. I understand the anxiety, but these genuinely can wait a few days without harm. Save the emergency slots for people in actual crisis.
WHAT ABOUT OTHER DENTAL PROBLEMS?
Here’s a quick guide to common dental issues and their urgency:
See someone same-day:
- Severe toothache not responding to painkillers
- Facial swelling spreading or affecting breathing
- Knocked-out permanent tooth
- Uncontrolled bleeding after 45 minutes
- Suspected jaw fracture
- Dental abscess with fever and swelling
See someone within 1-2 days:
- Moderate toothache manageable with painkillers
- Chipped tooth with sharp edges cutting your tongue
- Broken orthodontic wire poking into your cheek
- Lost filling causing sensitivity
- Minor swelling that’s not spreading
Book a routine appointment within a week:
- Lost crown not causing pain
- Small chip on front tooth (cosmetic concern, not painful)
- Broken denture (unless you can’t eat)
- General sensitivity to hot or cold
Book a check-up when convenient:
- Wanting to discuss cosmetic improvements
- Overdue for routine examination
- Interested in whitening or straightening teeth
WHY TIMING MATTERS
Early treatment is almost always simpler, less painful, and less expensive than delayed treatment.
That small cavity caught at your check-up? A 20-minute filling appointment costing £73.50 on the NHS.
That same cavity ignored for two years until it’s causing agonizing pain? Now you need root canal treatment (£[price]) and a crown (£[price]). Multiple appointments. More time off work. More discomfort.
The dental abscess you treated within 24 hours of swelling appearing? Drained in surgery, antibiotics prescribed, problem resolved in a week.
The same abscess you ignored for four days until your face swelled so badly you couldn’t open your eye? Hospital admission, IV antibiotics, surgical drainage under general anaesthetic. Days off work. Significant cost and trauma.
I’m not trying to scare you. I’m trying to prevent the dozens of patients I see annually who’ve turned minor problems into major crises through delay.
WHEN IN DOUBT, CALL
Here’s my simple rule: if you’re worried enough to be Googling “is this a dental emergency,” you’re worried enough to call us.
We’d rather you call and we tell you it can wait than you suffer at home or end up in A&E with something that’s spiraled out of control.
Our reception team are trained to assess urgency over the phone. They’ll ask about your symptoms, how long they’ve been happening, and whether you’re in pain. Based on your answers, they’ll either:
- Get you in for an emergency same-day appointment
- Book you for urgent care within 1-2 days
- Schedule a routine appointment
- Provide advice for managing symptoms until your appointment
There’s no charge for calling. There’s no judgment if it turns out not to be urgent. We’d genuinely rather assess you and find it’s minor than have you ignore something serious.
EMERGENCY DENTAL CARE AT A1 DENTAL SURGERY
We reserve emergency slots daily for urgent cases. If you’re experiencing any of the five serious signs I’ve outlined above, call us immediately on 01227 765 851.
We see emergency patients whether you’re registered with us or not. If you’re in severe pain or distress, we’ll get you in.
Our central Canterbury location (52 London Road) with on-site parking makes us easily accessible in emergencies, whether you’re local or traveling from Deal, Dover, Ramsgate, or Margate.
Outside our opening hours: If you have a genuine dental emergency when we’re closed and it can’t wait until we reopen, call NHS 111 for guidance on out-of-hours emergency dental services. For life-threatening situations (severe swelling affecting breathing, uncontrollable bleeding, major facial trauma), go to A&E or call 999.
FINAL THOUGHTS
Dental emergencies are stressful. You’re in pain, worried, and unsure what to do. Understanding the difference between “call immediately” and “this can wait a few days” removes some of that stress and helps you make good decisions.
The five signs I’ve covered (spreading swelling, knocked-out tooth, uncontrolled bleeding, severe pain, suspected fracture) need same-day attention. Most other dental problems can wait for a routine appointment.
When in doubt, call. We’re here to help, and we’ll guide you toward the right level of urgency for your situation.
Take care of your teeth. They’re the only ones you get (well, the second set anyway).
Dr Somitra Banvir
A1 Dental Surgery, Canterbury
