Quick answer. Toothache is usually caused by decay, infection, a cracked tooth, exposed nerve or gum problems. Most toothaches are best treated at a dental clinic, with over-the-counter painkillers for relief while you wait. Seek urgent care if you have severe unrelenting pain, fever, or facial/neck swelling – a spreading dental infection can become dangerous and may need A&E (call 995 if breathing or swallowing is affected). A knocked-out adult tooth is time-critical: handle it by the crown, gently reposition it into the socket if possible, or store it in milk or against the cheek, and see a dentist within 30–60 minutes. In Singapore, NDCS offers emergency dental care, with after-hours cover via SGH; children can go to KKH Children’s Emergency.
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In a medical emergency, or for severe or sudden symptoms such as breathing difficulty, chest pain, fainting or stroke signs, call 995 immediately.
Tooth pain and dental injuries can be distressing and sometimes serious. Knowing what counts as a true dental emergency – and what you can safely manage until you see a dentist – helps you act quickly and avoid complications.
This guide explains common causes of toothache, which situations are emergencies, simple first aid (including the time-critical steps for a knocked-out tooth), and when to go to a dentist versus a hospital A&E in Singapore, including after-hours options.
At a glance
| Situation | Urgency | Where to go |
|---|---|---|
| Mild to moderate toothache | Soon | Dental clinic; painkillers meanwhile |
| Knocked-out adult tooth | Immediate (within 30–60 min) | Dentist / emergency dental service |
| Facial or neck swelling, fever | Emergency | Urgent dental care or hospital A&E |
| Difficulty breathing or swallowing | Emergency – call 995 | A&E immediately |
| Uncontrolled bleeding or major trauma | Emergency | A&E / call 995 |
What causes toothache?
Toothache can have several causes, including:
- Tooth decay reaching the inner nerve
- Dental infection or abscess (often throbbing pain, possibly with swelling)
- Cracked or broken tooth, or a lost filling/crown
- Gum disease or food trapped between teeth
- An erupting or impacted wisdom tooth
Because the cause needs diagnosing and treating, a toothache is generally best assessed at a dental clinic rather than left to settle on its own.
What counts as a dental emergency?
Treat the following as urgent:
- Severe, unrelenting pain not controlled by over-the-counter painkillers
- Facial or neck swelling, or fever with toothache – this can signal a spreading infection
- A knocked-out adult tooth (time-critical)
- Significant trauma to the mouth, jaw or face
- Uncontrolled bleeding after an extraction or injury
Red flag: a dental infection that spreads to the face or neck can, if untreated, swell enough to threaten breathing or swallowing. This is a medical emergency – go to A&E and call 995 if breathing or swallowing is affected.
First aid for a knocked-out tooth
For a knocked-out adult (permanent) tooth, act fast – ideally see a dentist within 30 to 60 minutes:
- Hold it by the crown (the white chewing part), not the root.
- If dirty, rinse gently with milk or clean water for a few seconds – do not scrub or remove any attached tissue.
- If you can, place it back into the socket the right way round and bite gently on a clean cloth to hold it.
- If you cannot reimplant it, store it in milk (or tucked inside the cheek against the gum) – not in plain water or tissue – and bring it to the dentist immediately.
Do not try to reimplant a knocked-out baby tooth; see a dentist for advice instead.
First aid for other dental problems
- Toothache: rinse with warm water, gently floss to remove trapped food, and take over-the-counter painkillers as directed. Avoid placing aspirin directly on the gum.
- Broken or chipped tooth: save any pieces, rinse your mouth, and use a cold compress on the cheek to reduce swelling.
- Bleeding after extraction: bite firmly on clean gauze for 20–30 minutes; seek help if heavy bleeding continues.
- Lost filling or crown: keep the area clean and see your dentist; avoid chewing on that side.
Where to go in Singapore: dentist vs A&E
Most toothaches and dental problems are best handled by a dental clinic, which has the right equipment and expertise. Use painkillers for relief while waiting for the clinic to open.
Go to a hospital A&E (or call 995) if there is high fever, significant facial or neck swelling, difficulty breathing or swallowing, uncontrolled bleeding, or major facial trauma.
National Dental Centre Singapore (NDCS) provides emergency dental services through its Urgent Care Clinic during operating hours; outside these hours, emergency dental care is available via the Singapore General Hospital (SGH) emergency department. Children can be seen at KKH Children’s Emergency after hours. Some private clinics also offer after-hours or emergency dental services.
How to prepare before you reach the clinic
If you are in pain or have had an injury, a little preparation makes the visit smoother. Note when the problem started, what makes it better or worse, and whether you have any swelling or fever. Take any over-the-counter painkiller as directed (avoid placing aspirin directly on the gum, which can burn it), and bring a list of your medicines and allergies. If a tooth, filling or crown has come out, keep the piece and bring it with you. Call ahead where possible so the clinic can advise whether to come in immediately, and have a way to get there that does not depend on you driving if you are unwell or have taken strong painkillers.
Self-care while you wait
- Rinse gently with warm salty water and keep the area clean.
- Use a cold compress on the cheek to ease swelling after an injury.
- Avoid very hot, cold, hard or sugary foods on the affected side.
- Do not poke at the tooth or apply heat directly to a swollen area.
Common questions
Can I just wait for a toothache to go away?
Toothache usually has an underlying cause such as decay or infection that needs treating, so it is best assessed at a dental clinic. Painkillers only mask the problem while you wait for care.
When is toothache an emergency?
Treat severe unrelenting pain, fever, or facial or neck swelling as urgent, as these can signal a spreading infection. If breathing or swallowing is affected, go to A&E and call 995.
Are children’s dental emergencies handled differently?
Yes. A knocked-out baby tooth should not be reimplanted; see a dentist for advice. After hours, children can be seen at KKH Children’s Emergency.
Related guides
- Best Dental Clinics in Singapore — our editorial shortlist
- dental clinics directory
- Dentures
- Crowns & bridges
- Children's dentistry
Sources
- NDCS – Emergency Dental Services
- HealthHub – Dental care and toothache
- KK Women's and Children's Hospital – Children's Emergency
- CHAS – Dental Subsidies
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