A lost filling or crown rarely causes immediate agony, but the tooth underneath is now exposed and that means trouble if you ignore it. Most patients we see in this situation come in within 24 to 48 hours of the restoration popping out, usually after eating something sticky or hard.
If you’ve just lost a filling or crown, you can book an emergency dental appointment with us, but there are sensible steps you can take at home in the meantime to protect the tooth and reduce discomfort. In our experience, the patients who handle the first 24 hours well end up with simpler, cheaper repairs.
What actually happens when a filling or crown comes out
The tooth structure underneath a restoration is usually softer than enamel because the dentist had to drill into the decayed area before placing the filling or crown. Once that protective seal is gone, two things start happening: bacteria get back in, and the dentine (the layer beneath enamel) gets exposed to temperature, sugar, and acid. That’s why you might feel sharp twinges with cold water or sweet foods even though the tooth seemed fine yesterday.
Crowns sometimes come off cleanly with the tooth stump intact underneath. That’s actually the easier scenario. Fillings tend to break off in pieces, and occasionally a chunk of the tooth itself fractures away with the filling, which complicates things.
First steps in the first hour
Don’t panic, and don’t try to push a crown back on with household glue. We mean superglue, denture adhesive (in some cases that’s actually fine, see below), or chewing gum stuck inside. Superglue is toxic to the pulp and makes professional re-cementation much harder.
Here’s what we’d suggest doing straight away:
- Find the crown or filling fragment if you can, and rinse it gently in lukewarm water
- Store it in a small container or wrapped in tissue, somewhere you won’t lose it
- Rinse your mouth with warm salt water (about half a teaspoon of salt in a cup of water)
- Avoid chewing on that side until you’ve been seen
- Brush carefully around the affected tooth, the exposed area is fragile
If you’re in significant pain or you can see the nerve (a pinkish or reddish dot in the centre of the tooth), that changes things. Call us the same day.
Temporary fixes that actually work
Pharmacies in the UK sell temporary dental cement kits, usually for around £6 to £10. These work reasonably well for crowns that have come off cleanly. You mix or soften the material, place a small amount inside the crown, and press it back onto the tooth stump. It buys you a few days, sometimes a week, until you can get to a dentist.
For lost fillings, the same temporary kits include a putty you can press into the cavity to seal it. It’s not pretty, and it won’t last long, but it stops food packing into the hole.
Actually, one tip we give patients regularly: if you don’t have a temporary kit, sugar-free chewing gum (just a small piece, softened, pressed into the cavity) can act as a short-term plug for a few hours. Not ideal, but better than nothing if you’re stuck.
What you absolutely should not do
The list of things people try at home is, frankly, alarming. We’ve had patients arrive with crowns glued on with epoxy resin from the garage. We’ve had people who packed cavities with cotton wool and forgot about it for a week. The cotton wool fibres become a perfect breeding ground for bacteria.
Avoid the following:
- Superglue or any household adhesive, ever
- Chewing on the affected side (you’ll likely fracture more of the tooth)
- Very hot or very cold drinks, the exposed dentine is hypersensitive
- Picking at the area with toothpicks or fingernails
- Ignoring it for more than a week, the tooth will deteriorate quickly
Pain isn’t always present. That’s the trap.
NHS versus private treatment costs
If you’re an NHS patient in England, replacing a lost filling or re-cementing a crown falls under specific bands. The cost depends on what’s needed, not how long the appointment takes.
| Treatment | NHS Band | Cost (England) |
|---|---|---|
| Examination only | Band 1 | £27.90 |
| Re-cement existing crown | Band 2 | £76.60 |
| Replacement filling | Band 2 | £76.60 |
| New crown (lab-made) | Band 3 | £332.10 |
| Root canal + new crown | Band 3 | £332.10 |
Private fees vary, but a re-cement of an existing crown typically runs £80 to £150 privately, and a new crown anywhere from £450 to £900 depending on the material. The NHS has useful information about understanding NHS dental charges if you want to read further.
When this becomes a real emergency
Most lost fillings and crowns aren’t true emergencies. They’re urgent, sure, but you don’t usually need to be seen within hours. The exceptions are worth knowing about though.
You should treat it as an emergency and call us the same day if:
- You’re in severe pain that paracetamol or ibuprofen won’t touch
- The gum around the tooth is swollen, hot, or producing pus
- You can see the nerve (red or pink dot in the middle of the tooth)
- The tooth has fractured significantly along with the restoration coming out
- You’ve got a fever or swelling that’s spreading toward the eye or jaw
In our experience, swelling that’s tracking upward or outward from the tooth is the warning sign that gets undertreated at home. That’s an infection trying to find a way out, and it can turn nasty fast.
Preventing it from happening again
Most lost restorations have a predictable cause. Old amalgam fillings (the silver ones) often fail after 10 to 15 years as the tooth around them weakens. Crowns can come loose if the cement underneath has degraded or if there’s new decay at the margin where the crown meets the tooth.
Sticky foods are the classic trigger. Toffee, caramel, dried fruit, even some chewing gum. We’ve seen crowns lifted by all of them. If you’ve already had one restoration come out, you’re statistically more likely to have it happen again, the bond is the weak point.
Regular six-month check-ups catch failing restorations before they fall out. Actually, we’d say the value of those check-ups is mostly in spotting problems early, not in finding new ones.
If you’ve lost a filling or crown and you’re in or around Westcliff, we’re happy to help. Our team at Westcliff Dental Practice can usually fit emergency appointments in the same day or the next morning. Give us a ring on 01702 344 500 and we’ll talk you through what to do until you can come in.
