Here's the single rule that decides how urgent this is: the size of the gap and how much pain you're in tell you what to do next. A small chip with no pain can usually wait for a regular appointment, but severe pain, swelling, temperature sensitivity or an exposed nerve needs prompt care.
Key takeaways
- A lost or chipped filling on its own usually isn't an urgent emergency.
- Severe pain, swelling, temperature sensitivity or a visibly exposed nerve after a filling breaks does need prompt attention.
- Sharp edges left behind can cut your tongue or cheek, so they're worth managing even without pain.
- Rinsing with warm salt water, avoiding chewing on that side, sticking to soft foods and appropriate pain relief can help while you wait for an appointment.
- A pharmacy temporary filling material can seal the area short-term, but it's not a substitute for a proper dental repair.
- Left untreated for a long time, a lost filling can let bacteria into the tooth and eventually lead to a root canal or worse.
What actually makes this urgent
Fillings chip or fall out more often than people expect, usually from everyday chewing, grinding, or biting down on something hard. On its own, a missing chunk of filling isn't necessarily a crisis. What changes the picture is what's happening around it. Ask yourself these questions:
- Is there significant pain, especially pain that's getting worse rather than settling?
- Is the area swollen, or does your face or gum look puffy?
- Does hot or cold food or drink cause sharp, lingering sensitivity?
- Can you see a pink or reddish area inside the tooth, which may indicate the nerve is exposed?
- Is there a sharp edge cutting your tongue or the inside of your cheek?
If you answered yes to any of the first four, treat it as something needing prompt attention. A sharp edge alone isn't a medical emergency but is uncomfortable enough to deal with quickly.
Chipped filling: what's urgent versus what can wait
| Situation | Urgency level | What to do |
|---|---|---|
| Small chip, no pain, smooth edge | Low, book a routine appointment | Keep the area clean, avoid hard foods on that side |
| Missing filling, mild sensitivity to cold | Moderate, book within a few days | Avoid extreme temperatures, consider a temporary filling material |
| Sharp edge cutting tongue or cheek | Moderate, book soon | Cover the edge with dental wax or temporary filling material if needed |
| Severe pain or visible nerve | High, seek prompt care | Pain relief as directed, avoid chewing on the tooth, contact your dentist promptly |
| Swelling, fever, or pain spreading to jaw or ear | High, seek urgent care | Contact your dentist immediately, this can indicate a spreading infection |
What to do while you wait for an appointment
- Rinse gently with warm salt water. This helps keep the area clean and can reduce minor irritation.
- Avoid chewing on that side. Give the tooth a break rather than risking further damage or discomfort.
- Stick to soft foods. Anything hard, sticky or chewy can worsen the damage or get lodged in the gap.
- Use over-the-counter pain relief as directed. Check the packaging or ask your pharmacist, and see our guide on ibuprofen versus paracetamol for tooth pain for general guidance.
- Consider a temporary filling material from the pharmacy. These over-the-counter products can seal the area short-term and protect the exposed tooth structure, but they're a stopgap, not a fix.
Why you shouldn't leave it too long
A missing filling leaves part of the tooth exposed. That gap gives bacteria a direct path into the tooth, and over time this can lead to decay progressing deeper, sometimes reaching the nerve. If that happens, what could have been a simple filling replacement may turn into a root canal, or in more advanced cases, the tooth may not be saveable at all. If you've already lost a filling, our detailed guide on what to do when you lose a filling walks through the next steps in more depth.
Sometimes swelling appears a day or two after a filling is repaired or replaced, which can be a normal part of healing. If that happens, our article on how long swelling after a filling is normal explains what to expect and when to be concerned. And if the damage does turn out to be more serious, our comparison of root canal versus extraction covers how that decision is typically made.
Frequently asked questions
Can I go to work with a chipped filling?
If there's no significant pain, swelling or sensitivity, a small chip usually doesn't stop you from going about your day. Just avoid chewing on that side and book an appointment when you can.
How long can I leave a chipped filling before it becomes serious?
There's no fixed timeframe, it depends on how much of the tooth is exposed. As a general guide, aim to have it assessed within a week or two even if it's not painful, since bacteria can reach the exposed area in the meantime.
Is it okay to use chewing gum to cover a hole from a lost filling?
It's not recommended. Chewing gum can stick in the gap and be difficult to remove properly, and it doesn't provide a clean seal. A pharmacy temporary filling material is a better short-term option.
Why does my tooth suddenly feel sensitive to cold after a filling chipped?
Losing part of a filling can expose the underlying dentine, which is naturally more sensitive to temperature changes than the outer enamel. This sensitivity is a signal to get the tooth assessed rather than something to ignore.
Will I need the same type of filling replaced?
Not necessarily. Your dentist will assess how much of the original tooth structure remains and recommend the most suitable repair, which might be the same type of filling or something different depending on the size of the damage.
Book an appointment
If you've chipped or lost a filling, it's worth getting it looked at properly rather than guessing how urgent it is. See current deals or find out more about general dentistry at Lumi Dental.
