Lost Crown or Filling: First Aid

A crown or filling that comes loose or falls out can be startling, especially if it happens while eating. The tooth underneath may feel rough, sharp, or sensitive to air, cold, or pressure, and it may look different from neighbouring teeth. In many cases the tooth is not in immediate danger, but it is exposed and more vulnerable to decay, cracking, or pain, so it should be protected and checked promptly.

This guide explains what to do with a lost crown or filling, how to protect the tooth while you wait, and which signs mean a faster call. It does not cover fitting a crown yourself, and it does not recommend household glues or home repairs. If there is severe pain, swelling, uncontrolled bleeding, or a serious injury, seek urgent care promptly.

What to do with the crown or filling

• If a crown comes off, keep it somewhere safe and clean, and bring it to the visit, because a dentist may be able to refit it.
• Do not try to glue a crown back with household adhesive, and do not force a crown that will not sit comfortably.
• If a filling is lost, note whether the tooth is sensitive, sharp, or painful, and avoid probing the hole with a toothpick or fingernail.
• Rinse gently with warm water and clean around the tooth with a soft brush, without scrubbing the exposed area.

A crown that comes off cleanly and a tooth with no pain can often wait for a prompt appointment, but a tooth that is painful, swollen, or very sensitive should be checked urgently. When you call, say whether a crown or filling was lost, when it happened, whether you still have the crown, and whether the tooth hurts or reacts to temperature. That helps a dentist judge how quickly the tooth should be seen.

Protecting the exposed tooth

An exposed tooth is more sensitive to hot, cold, sweet, and acidic foods, so avoid those triggers on that side and chew on the other side until the visit. Avoid very hard or sticky foods that could crack the tooth further or pull at a loose crown, and avoid biting directly on the exposed tooth. Gentle brushing around the area keeps it clean without irritating it, and a soft brush is better than vigorous scrubbing.

Temporary dental cement sold for this purpose can sometimes protect a tooth for a short time, but it is not a repair and it should only be used as directed on the packet. If the tooth becomes painful, swollen, or more sensitive after using a temporary product, call promptly. Do not use chewing gum as a long-term plug, and do not ignore a tooth that feels loose, because looseness can point to damage below the crown or filling.

Pain, swelling, and sharp edges

Pain after losing a crown or filling can come from sensitivity, from a crack underneath, or from infection that was already present. Pain that throbs, lingers after hot or cold food, or wakes you at night deserves a prompt call, as does swelling, a bad taste, or a fever. A sharp edge on a broken tooth or a rough crown margin can cut the cheek or tongue, so cover a sharp spot temporarily with soft dental wax if needed and avoid pressing on it.

If the tooth underneath looks dark, broken, or much shorter than before, mention that when you call, because it can change how urgently the tooth needs checking. Bring the crown, note any pain or sensitivity, and mention recent dental work or an injury that may have loosened the restoration. A dentist will examine the tooth, check the bite, and decide whether the crown can be refitted or a new restoration is needed.

Eating and cleaning until the visit

Until the visit, choose soft foods, cut food into small pieces, and avoid chewing on the affected side. Rinse gently after eating to clear food from the exposed area, and brush gently with a soft brush and fluoride toothpaste. Avoid whitening products, strong mouthwashes, and abrasive toothpaste on the exposed tooth, because they can increase sensitivity without helping the tooth.

Keep the appointment even if pain settles, because an exposed tooth can decay or crack without warning. At the visit, ask what caused the loss, how to care for the tooth after repair, and what foods to avoid until it is fully settled. A clear note of when the crown or filling was lost and what symptoms followed helps the dentist plan the repair.

Related emergency dental help

• Lost Dental Crown
• Lost Dental Filling
• Crowns and Bridges

See the full Emergency Dental Services list for other urgent topics besides Lost Crown or Filling: First Aid, or Contact Emergency Dentist for general enquiries. For urgent help, call.

Related emergency dental help

Learn more about the topics covered in this guide:

• Lost Dental Crown
• Lost Dental Filling

More guides:

• Tooth Pain After a Filling: Explained
• What Happens at an Emergency Visit?

Frequently asked questions

Can a dentist refit a lost crown?

Sometimes, if the crown is intact and the tooth underneath is sound. Bring the crown to the visit so a dentist can judge whether refitting is possible.

Should I glue a crown back myself?

No. Household adhesives can damage the tooth and the crown and make repair harder. Keep the crown safe and arrange a dental visit.

How quickly should a lost filling be checked?

Arrange a prompt appointment, and call urgently if there is pain, swelling, sensitivity that lingers, or a sharp edge cutting the mouth.

Please treat this page as general information about Lost Crown or Filling: First Aid, not medical advice. A dentist who examines you can give advice for your situation.