Important Medical Warning
If you are experiencing a dental emergency, difficulty breathing, severe swelling, or uncontrolled bleeding, call 911 or go to your nearest emergency room immediately.
A crown falling off is one of the most common dental emergencies, and the good news is that it is usually fixable. In many cases, your dentist can recement the same crown right back on. But what you do in the hours and days between losing the crown and getting to a dental office makes a real difference in the outcome.
This guide walks you through exactly what to do when your crown falls off, how to protect the exposed tooth, whether you can temporarily reattach it at home, and when the situation requires urgent care.
Why Dental Crowns Fall Off
What to Do Immediately When Your Crown Falls Off
Step 1: Retrieve the crown. If you can find the crown, pick it up carefully. If it came off while eating, do not throw away your food until you have located it. Check the crown for damage — cracks, chips, or pieces of tooth still attached inside.
Step 2: Rinse the crown. Gently rinse the crown with warm water to remove any food debris or old cement. Do not scrub the inside aggressively. Set it aside in a small container or zip-lock bag so you do not lose it.
Step 3: Examine the exposed tooth. Look at the tooth in a mirror. If the tooth looks intact — a small, filed-down peg shape — that is normal. If you see a dark discoloration, a broken tooth, or the tooth is mostly gone, make a note for your dentist.
Step 4: Clean the tooth gently. Brush the exposed tooth gently with a soft toothbrush to remove any remaining cement or debris. Be careful, as the tooth may be sensitive.
Step 5: Manage any pain. The exposed tooth may be sensitive to air, temperature, and pressure. Over-the-counter pain relievers like ibuprofen (Advil) or acetaminophen (Tylenol) can help. You can also apply clove oil (eugenol) to the tooth with a cotton ball for temporary numbing — this is the same active ingredient dentists use in many temporary cements.
Step 6: Call your dentist. Schedule an appointment as soon as possible. Most dental offices will fit you in within a day or two for a lost crown, as they understand it is time-sensitive.
How to Temporarily Reattach a Crown at Home
Protecting the Exposed Tooth While You Wait
Avoid chewing on that side. The tooth underneath a crown has been filed down and is structurally weaker than a natural tooth. Biting with force could crack or break it further, potentially making the tooth unsavable.
Avoid hot and cold extremes. The exposed dentin is full of tiny tubules that connect to the tooth's nerve. Hot coffee, ice water, and cold air can all cause sharp, shooting pain. Drink lukewarm beverages and try to breathe through your nose in cold weather.
Eat soft foods. Stick to soft foods on the opposite side of your mouth. Avoid anything sticky, crunchy, or hard that could damage the exposed tooth.
Keep it clean. Gently brush the exposed tooth and the surrounding gum line to prevent bacterial buildup. Bacteria can access the tooth much more easily without the crown's protective barrier. Rinse gently with warm salt water after meals.
Do not wiggle or test the tooth. If the tooth feels loose or flexible, resist the urge to push on it with your tongue or fingers. Any remaining cement bond may be the only thing holding the tooth stable.
Be careful with the opposing tooth. The tooth directly above or below the crown site may now hit differently when you bite. Be aware of this and try to keep your bite gentle until the crown is back in place.
When a Lost Crown Is an Emergency
The exposed tooth is broken or jagged. Sharp edges can cut your tongue, cheek, or gums. If you cannot cover the sharp edge with dental wax and it is causing injury to soft tissue, seek emergency dental care.
You are in severe pain. If the exposed tooth is causing intense, constant pain that over-the-counter medications cannot control, you may have an exposed nerve or an underlying infection. This warrants emergency attention.
Significant swelling around the tooth. Swelling may indicate that decay or infection was developing under the crown. If swelling is spreading to your face, jaw, or neck, seek care immediately.
The tooth is broken at the gum line. If the crown came off and took a piece of the tooth with it — or if the remaining tooth is broken down to or below the gum line — the treatment plan is more complex. Your dentist needs to evaluate whether the tooth can be saved.
You swallowed the crown. In most cases, a swallowed crown will pass through your digestive system without any problems within a few days. However, if you experience difficulty breathing, chest pain, or abdominal pain after swallowing a crown, seek medical attention immediately, as it may have entered the airway.
*If you experience difficulty breathing, severe swelling spreading to your throat or neck, uncontrolled bleeding, or high fever, call 911 or go to your nearest emergency room. These symptoms may indicate a serious infection.*
What Your Dentist Will Do
How to Prevent Your Crown from Falling Off Again
Avoid sticky foods on crowned teeth. Caramel, taffy, Starburst, and gummy candy are the most common culprits for pulling crowns off. If you do eat sticky foods, chew them on the opposite side.
Do not chew ice or hard objects. Ice, hard candy, popcorn kernels, pen caps, and fingernails can all damage or dislodge crowns. This is good advice for natural teeth as well.
Wear a night guard if you grind your teeth. If bruxism contributed to your crown loss, a custom night guard from your dentist distributes clenching forces and protects all your dental work while you sleep. Over-the-counter guards are a less precise but cheaper alternative.
Maintain excellent oral hygiene. Brush twice daily and floss around the crown every day. Use floss threaders or interdental brushes to clean the margin where the crown meets your tooth — this is where decay starts. Consider using a fluoride rinse to strengthen the tooth structure at the crown margins.
Keep regular dental appointments. Your dentist can spot early signs of cement failure, marginal decay, or poor crown fit at routine checkups — often before the crown falls off. Most issues are much simpler and less expensive to fix when caught early.
Report any changes promptly. If your crown starts feeling loose, if you notice a bad taste around the crown, or if it feels different when you bite, tell your dentist. These are early warning signs that the crown may be failing.
Key Takeaways
If you have over-the-counter temporary dental cement, you can reattach the crown as a short-term measure — but never use super glue or household adhesives. In the meantime, avoid chewing on that side, stay away from temperature extremes, and keep the area clean.
Most of the time, your dentist can clean and recement the same crown in a quick, affordable visit. Even when the crown or tooth needs more work, early treatment gives you the best chance of saving the tooth and avoiding more extensive procedures. The worst thing you can do is ignore a lost crown and hope it resolves on its own — the exposed tooth is vulnerable to fracture, decay, and shifting that can turn a simple fix into a complicated one.
Frequently Asked Questions
Can I super glue my crown back on?
No — never use super glue, Krazy Glue, or any household adhesive to reattach a dental crown. These products contain chemicals that are toxic to oral tissue and can cause irritation or chemical burns. They also create a bond that is too rigid, which can crack the crown or make it extremely difficult for your dentist to properly remove and recement it. Use over-the-counter temporary dental cement from a pharmacy instead, or leave the crown off and protect the tooth with dental wax until you see your dentist.
Is a crown falling off a dental emergency?
A lost crown is a dental urgency — you should see a dentist within a day or two — but it is usually not a true emergency. It becomes an emergency if you are in severe pain that medication cannot control, if there is significant swelling, if the exposed tooth is broken with sharp edges cutting your mouth, or if you have signs of infection like fever. In those cases, seek same-day or emergency dental care.
How much does it cost to reattach a crown?
If the original crown is in good condition and can simply be recemented, the cost is typically $100 to $300. If the tooth needs a core buildup or minor repair first, expect $200 to $500. If a brand new crown is needed, costs range from $800 to $3,000 depending on the material and your location. Dental insurance often covers a significant portion of crown replacement. Check with your insurance provider about your specific coverage.
How long can you go with a crown off your tooth?
You should see a dentist within 1 to 2 days if possible. The exposed tooth is vulnerable to fracture, decay, and sensitivity. The longer you wait, the greater the risk that bacteria will compromise the tooth or that the opposing and adjacent teeth will shift slightly, potentially affecting the crown fit. If you absolutely cannot get to a dentist right away, use temporary dental cement and follow the protective measures to keep the tooth safe for up to a few weeks — but do not treat this as a long-term solution.
What if I swallowed my crown?
A swallowed dental crown will usually pass through your digestive system without any problems within 2 to 3 days. The materials used in crowns — porcelain, ceramic, and metal alloys — are not toxic and will not be digested. However, if you experience difficulty breathing, choking, chest pain, or severe abdominal pain, seek emergency medical care immediately as the crown may have been aspirated into the airway rather than swallowed. Your dentist will need to make a new crown since the swallowed one cannot be retrieved.
Medical Disclaimer
The information provided on Urgent Dental Helper is for general informational and educational purposes only. It is NOT intended to be a substitute for professional medical or dental advice, diagnosis, or treatment. Always seek the advice of your dentist, physician, or other qualified health provider with any questions you may have regarding a dental or medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
