If your dental crown falls out, keep the crown if you can find it, avoid chewing on that tooth, and contact a dentist promptly for advice and an appointment. The underlying tooth may be sensitive, weakened, or damaged. Do not use household glue or force the crown back into place. Whether the original crown can be reused depends on its condition, fit and the health of the tooth underneath.

A lost crown is not always a hospital emergency, but it should not be ignored. If you have severe pain, swelling, fever, a significant injury, or rapidly worsening symptoms, tell the dental team that when you call. Lakeflower Family Dental provides information about crowns and bridges and emergency dentistry.

What should I do immediately if my crown falls out?
Retrieve the crown if it is safe to do so. Rinse it gently with water if it is dirty and store it in a clean container. Do not scrape or aggressively clean the inside.
Call a dentist. Explain whether it is a permanent or temporary crown, when it came off, whether the tooth hurts, and whether the crown or underlying tooth looks broken.
Avoid chewing on that side. Choose softer foods and avoid sticky, hard or very hot/cold foods if the tooth is sensitive.
Keep the area clean. Brush gently with fluoride toothpaste; clean around the tooth without forcing tools into it.
Do not use superglue or household adhesives. These products are not designed for use in the mouth and can damage tissues or complicate treatment.
Follow the dentist’s advice about temporary measures. Do not push the crown back on if it does not fit comfortably or if you are unsure how it should sit.
Patient guidance from NHS Wales on a lost filling or crown similarly advises contacting a dentist, keeping the crown safe and protecting the tooth while waiting for assessment. Your own dentist’s advice should take priority because they know the restoration and your history.

Why might a crown come loose or fall out?
A crown can come off for several reasons, and the cause affects whether it can be recemented or needs replacement. Possibilities include:

The cement holding the crown has weakened or failed.
Decay has developed around the edge of the crown.
Part of the underlying tooth or core has fractured.
The crown or the tooth has been damaged by an injury.
The bite or clenching/grinding forces have placed stress on the restoration.
A temporary crown has loosened during the period before final placement.
Do not assume the cement is the only issue. A crown that falls out may expose decay or a fracture that was not visible when the crown was in place. A dentist needs to inspect both the crown and the underlying tooth before deciding what to do.

Can I put a crown back on myself?
It is safest to call a dentist before trying to reposition a crown. A crown may not fit properly if the underlying tooth has broken, the restoration is damaged, or material is trapped inside. Forcing it can injure the gums or make the situation harder to assess. Never use superglue or a household adhesive.

Some pharmacies sell temporary dental repair products, but these are not suitable for every situation. Use them only if a dentist or qualified dental professional advises that a particular product is appropriate for your case. A professional assessment is still needed to decide whether the crown can be reused and whether there is decay or structural damage.

Can I eat while the crown is off?
If you need to eat before your dental appointment, choose softer foods and chew on the opposite side if possible. Avoid hard, crunchy, sticky or chewy foods that could further fracture the tooth or irritate the area. If the tooth is sensitive, avoid extremes of temperature. Continue cleaning gently and avoid repeatedly testing the tooth by biting down on it.

If you cannot close your teeth normally, pain is severe, or the exposed tooth feels sharp and is injuring your tongue or cheek, tell the dental office when you call. They can help determine how quickly you need to be seen.

When is a lost crown urgent?
Call a dentist promptly for advice, especially if the crown came off with pain, the tooth is broken, or the restoration is part of a recent treatment. The urgency increases if symptoms suggest infection or significant injury.

Seek urgent medical attention if you develop rapidly spreading facial or neck swelling, difficulty breathing or swallowing, or other severe systemic symptoms. A dental problem with airway or swallowing symptoms should not wait for a routine appointment.

The Ontario Dental Association’s dental-emergency guide outlines common situations that need prompt dental advice. If you are contacting a clinic in Lakefield, describe the crown loss, when it occurred, and any swelling, fever, injury or severe pain so the team can triage appropriately.

What might the dentist do?
The dentist will usually examine the crown and tooth, assess the fit, and look for decay, fracture or changes in the supporting structure. Depending on the findings, they may:

Clean and recement the original crown if it is intact and suitable.
Repair or replace the crown if it is damaged or no longer fits.
Treat decay or rebuild the underlying tooth before restoring it.
Recommend a different restoration if too much tooth structure has been lost.
Discuss root canal treatment or extraction if the underlying tooth cannot be predictably restored.
The appropriate option depends on the clinical examination; not every crown that falls out can be reattached. Learn about related restoration options on the clinic’s crowns and bridges page.

FAQs
Should I keep a crown that fell out?
Yes, if you can retrieve it safely. Store it in a clean container and take it to the dentist. The dentist can determine whether it is intact, still fits, and can be reused. Do not try to clean it with harsh chemicals or household tools.

Can I sleep with a crown out?
Contact a dentist for advice about timing, particularly if there is pain or visible damage. Avoid chewing on the exposed tooth and keep the area clean while you wait. If there is significant swelling, severe pain, or other urgent symptoms, do not treat it as a routine issue.

Can I use superglue to put a crown back?
No. Household glues are not designed for intraoral use and can damage tissues or complicate dental treatment. Call a dentist and follow instructions for safe temporary care.

Will the dentist always be able to reuse my crown?
No. Reuse depends on whether the crown is intact, whether it still fits, why it came off, and whether the underlying tooth has decay or is fractured. The dentist may recommend repair or a new restoration instead.

Is a lost crown a dental emergency?
It needs prompt dental advice, but urgency varies. Pain, swelling, injury, a broken underlying tooth, or signs of infection make the situation more urgent. Trouble breathing or swallowing, or rapidly spreading swelling requires emergency medical care.

Can I brush the tooth if the crown is missing?
Yes, keep the area clean, but brush gently and avoid forcing the toothbrush into a sensitive or damaged area. Follow any specific advice given by your dentist. Avoid chewing hard foods on that tooth until it is assessed.

Conclusion: protect the tooth and arrange an assessment
A crown falling out exposes the underlying tooth to further damage and sensitivity. Keep the crown, avoid chewing on that side, maintain gentle hygiene, and contact a dentist rather than trying household glue or forcing it back into place. The dentist can determine whether it can be recemented, repaired, or replaced and whether the tooth needs additional treatment.

For Lakefield-area patients, see Lakeflower Family Dental’s crowns and bridges and emergency dentistry pages, or use the contact page to ask how to proceed. If you have urgent symptoms, clearly describe them when contacting the clinic.