How long a dental problem can wait is decided by swelling, breathing, bleeding and sleep, not by how much it hurts: a few problems need an ambulance within minutes, most sit between same day and a few weeks, and some can wait until your next check-up.
This guide sorts the usual problems into rough timeframes. It is general information, not a diagnosis. If you are unsure, ring a dentist, or call Healthdirect on 1800 022 222, staffed around the clock by a registered nurse. NSW also runs an oral health contact centre on 1800 679 336.
Stop here if any of these are happening
NSW Health sets out red flag symptoms in its Oral Health Access policy directive, PD2024_034. If any are present, the destination is an emergency department or Triple Zero, not a dental appointment. Nothing further down this page applies.
- Difficulty breathing, or breathing very quickly.
- Difficulty swallowing, or difficulty opening the mouth.
- Swelling that crosses the jaw line into the neck, or is closing an eye.
- Bleeding that will not stop with firm, sustained pressure.
- Feeling very sick, or getting sick quickly: fever, shivering, vomiting, severe aches.
- Confusion, dizziness, or altered consciousness at the time of an injury.
- A head injury or other non-dental injury alongside the dental one.
NSW Health adds two more red flags for children: swelling affecting the eye, and refusing fluids. Dental pain with a fever, or a child who will not drink, is treated as a same-day emergency in the NSW system.
The reason these signs sit at the top is simple. An infection starting in a lower back tooth can spread into the soft tissue under the tongue and in the neck, so the floor of the mouth becomes firm, the tongue lifts and the airway can narrow. That is managed in hospital. Do not wait to see whether it settles overnight.
Key takeaways
- Swelling, breathing, swallowing and how unwell you feel decide urgency. Pain level does not.
- A knocked out adult tooth is the one genuine race against the clock, and the first few minutes matter most.
- Never put a knocked out baby tooth back in.
- Pain that wakes you at night is a within-the-week problem, not a wait-and-see one.
- A painless tooth can still be badly diseased, so pain settling is not proof the problem has.
- An emergency department manages the airway, infection, bleeding, trauma and pain. It rarely treats the tooth.
Urgency and pain are not the same thing
Most people triage themselves on how much it hurts, and that is a poor guide. A meaningful proportion of teeth with a badly inflamed nerve produce no symptoms until something else gives it away, such as a shadow on an x-ray. At the other end, a tooth can be intensely painful for a night and still be nowhere near dangerous.
There is a trap in the middle. When throbbing pain fades over a day or two without treatment, it often means the nerve has died. The pain stops because the tissue that was signalling has stopped, while the bacteria stay put. If you have had days of pain and it has gone, book anyway.
Night pain is a useful signal because it points to an inflamed nerve rather than a passing sensitivity, which is covered in our article on why toothache gets worse at night.
The urgency ladder at a glance
The timeframes below borrow from the NSW Health Priority Oral Health Program, which gives each presentation a priority code and a recommended maximum waiting time. Those waits are administrative targets for the public system, not a statement that you are clinically safe for that long.
| How soon | What it looks like | What to do first | Why this timeframe |
|---|---|---|---|
| Now, Triple Zero or an emergency department | Trouble breathing or swallowing, swelling crossing the jaw line or closing an eye, swelling with fever, bleeding that will not stop, a head injury alongside the dental one | Call Triple Zero or go straight to an emergency department | These signs point to spreading infection, blood loss or an airway risk |
| Same day | Facial swelling without the red flags above, a knocked out adult tooth, bleeding after an extraction that will not settle, recent dental trauma | Replant or store an adult tooth in milk, press firmly on bleeding, then ring a dentist | NSW Health codes these as a dental emergency, recommended maximum wait 1 day |
| Within about 1 week | Pain disturbing sleep with no swelling, a mouth ulcer present 2 weeks or more, a cracked tooth that hurts on biting | Book the first available appointment and describe the symptoms when you call | Coded urgent dental, recommended maximum wait 1 week for adults and 3 days for children |
| Within a few weeks | Daytime pain that settles, a lost filling or crown with no pain, a broken tooth with no pain, gums that bleed when you brush | Book a normal appointment and keep the area clean | Around 30 days for daytime pain, and up to 60 days in children for a broken tooth or filling |
| At your next check-up | A chipped enamel edge only you can see, occasional cold sensitivity, staining, a rough edge | Write it down and raise it at the visit | Usually stable, and better planned than squeezed in |
| Any of the above, if it changes | It spreads, swells, starts waking you, or you begin to feel unwell | Move straight up the ladder | The timeframe is set by the current picture, not the original one |
Right now: Triple Zero or an emergency department
This bucket is small, and that is the point. It covers anything affecting breathing, swallowing or consciousness, swelling that has crossed into the neck or is closing an eye, bleeding that will not stop, and any dental injury that came with a head injury.
You do not need the diagnosis, only the pattern. Hospital teams can secure an airway, give intravenous antibiotics and fluids and drain a collection. A dental practice cannot. Our guide on when to go to hospital for a dental problem covers where the line sits.
Same day: swelling, knocked out adult teeth and bleeding
Below the red flags sits a group of problems where the same day matters. Facial swelling of suspected dental cause is the main one: the infection has left the tooth and entered the tissue around it, and the direction of travel matters more than the current size. Get it seen today, and keep watching for the red flags.
A knocked out adult tooth
The International Association of Dental Traumatology guidelines for avulsed permanent teeth are clear that the best outcome comes from replanting immediately, at the scene. Pick the tooth up by the crown, never the root. If it is dirty, rinse it briefly with milk or saline, put it back in the socket and bite gently on a clean cloth.
If replanting is not possible, the tooth goes straight into milk. Not water, not a tissue, not ice. The guidelines note that beyond roughly 30 minutes of dry time outside the mouth, most ligament cells on the root surface are no longer viable, and beyond 60 minutes the prognosis is worse again and splinting takes longer. It is not a cliff edge, but every minute counts. There is a step by step version in our knocked out tooth first aid guide.
A knocked out baby tooth
Do not put it back. Replanting a baby tooth can damage the developing adult tooth above it. Keep the child calm, control bleeding with gentle pressure, and ring a dentist the same day. Our article on why a knocked out baby tooth should not be replanted explains the reasoning.
Bleeding after an extraction belongs here too. Some ooze for several hours is normal. Bleeding that soaks through gauze after 20 to 30 minutes of firm pressure is a same day problem.
Within about 1 week: pain that wakes you, ulcers and cracks
Pain that wakes you at night
NSW Health treats dental pain that disturbs sleep, with no facial swelling, as urgent dental care with a recommended maximum wait of 1 week for adults and 3 days for children. Pain that wakes you may indicate the nerve is inflamed, and a dentist should assess it rather than you waiting to see whether it burns itself out.
The same bucket holds a mouth ulcer present for 2 weeks or more, and a cracked tooth that gives a sharp jolt when you bite hard or release the bite. Cracks tend to propagate, and getting on top of one before the nerve is involved usually keeps the options simpler.
Within a few weeks: no pain, but the tooth is not protected
A lost filling or a crown that has come off, with no pain, is not an emergency. There is no evidence base setting a safe waiting time, and the commonly repeated day or two figure is convention rather than guidance. What is true is that the tooth is unprotected. Unsupported enamel chips, exposed dentine gets sensitive, food packs in, and neighbouring teeth can drift so the original crown no longer fits.
The practical answer is weeks, not months, and sooner if it becomes sensitive or sharp. Gums that bleed every time you brush belong in the same bucket: usually inflammation, very treatable, and not going to change over a weekend. Below all of this sits the small stuff, such as a chipped enamel corner only you can see, which is worth raising at your next check-up rather than reorganising your week for.
One caveat covers this whole page. Everything below the red flags assumes no swelling, no fever, no pain that wakes you and no bleeding that will not stop. If any of those appear, the problem moves up the ladder immediately.
What an emergency department can and cannot do for a tooth
This is where the most time gets wasted. Australian public emergency departments manage airways, sepsis, bleeding, facial trauma and pain. They are not set up to fill, extract or root fill teeth, and most have no dentist on site overnight and no dental chair.
If you arrive with a painful tooth and no red flags, the usual outcome is an assessment, pain relief, sometimes antibiotics where infection is spreading, and advice to see a dentist. The tooth is unchanged in the morning. When a problem is urgent but not an emergency, an after hours dental service is usually the better route, and our guide to dental emergencies after hours and on public holidays sets out how to find one.
What to do while you wait
Things that can help
Take the pain relief you would normally use, following the packet directions, and check with a pharmacist if you take other medicines. Sleep with your head raised. Stick to soft food, chew on the other side, and keep brushing the area gently.
Things that do not help
Do not hold an aspirin tablet against the gum. It burns the tissue and does nothing for the tooth. Do not put heat on a swollen face. Clove oil, oil pulling and salt water do not treat an abscess. Antibiotics do not buy safe waiting time either: they do not reach the inside of a dead tooth or remove the source, and Australian prescribing guidance is firmly against antibiotic-first management of dental infection.
Common questions
Can you go to hospital for a toothache in Australia?
Yes, and for the red flag symptoms at the top of this page you should. A hospital will manage the airway, infection, bleeding, trauma and pain, but in most cases it will not treat the tooth, because emergency departments generally do not have dental facilities. For pain alone, a dentist or an after hours dental service is usually faster and more useful.
How long do you have to put a knocked out tooth back in?
Immediately. The International Association of Dental Traumatology guidelines describe the best outcome as replanting at the scene. Beyond about 30 minutes of dry time outside the mouth, most ligament cells on the root are no longer viable, and beyond 60 minutes the outlook is poorer again.
That is a gradient rather than a deadline, and no one can promise a particular result. If you cannot replant it, milk is the practical storage medium. Never water, never a dry tissue.
Is facial swelling from a tooth an emergency?
Treat facial swelling of suspected dental cause as a same day problem at minimum. It sits in the NSW Health dental emergency category with a recommended maximum wait of 1 day. It becomes a hospital problem immediately if the swelling crosses the jaw line into the neck, closes an eye, comes with fever, or brings difficulty breathing, swallowing or opening the mouth.
How long can you leave a broken tooth or lost filling?
With no pain, no swelling and no sharp edge cutting your tongue, a lost filling or broken tooth can typically wait a few weeks rather than a few days. No guideline sets a safe number. The risk is not that it fails overnight, but that unsupported enamel chips further and a straightforward repair becomes a larger one.
When should I worry about a mouth ulcer that will not heal?
Most ulcers settle within about 10 to 14 days. An ulcer or patch still there at 2 to 3 weeks should be assessed, and that threshold matches the NSW Health triage criteria, which flag an oral lesion present for 2 weeks or more.
The great majority turn out to be harmless. Persistent changes simply deserve a proper look.
If you are not sure where your problem sits, a proper look beats another night of guessing. The team at Lumi Dental in Melrose Park can assess what is going on and talk through the options in plain language. See what is currently available on our current deals page, or read about visits with our general dentist in Melrose Park. We are open Monday to Saturday, with Sunday by appointment.
This article is general information only and does not replace an examination. Symptoms can look similar and have very different causes, so if something is worrying you, have it assessed. In an emergency, call Triple Zero.
