If your crown falls out, keep it, rinse your mouth, protect the exposed tooth with over-the-counter temporary dental cement or sugar-free gum, avoid chewing on that side, and book a dental visit within 1 to 3 days. A loose or lost crown is common and usually not an emergency unless you have severe pain, swelling, or a broken tooth underneath. In many cases, the original crown can be cleaned and re-cemented, and our crowns and bridges team will check whether that’s possible.
It’s unsettling to find a crown in your mouth while eating, and the exposed tooth can feel sharp, sensitive, or strange to your tongue. Try not to panic. Most patients are seen quickly at their dental clinic in Barrie, and the fix is often simple.
Sometimes a crown comes off because decay has formed underneath. A quick image with digital radiography shows whether the tooth needs treatment before the crown goes back on.
If dental visits make you nervous, dentistry with nitrous oxide can help you relax. And if the tooth needs more than re-cementing, the full range of all dental services is available under one roof.
Crown fell out? Do this now
- Find the crown and keep it in a clean container or bag.
- Rinse your mouth with warm salt water.
- Gently clean the inside of the crown with a soft toothbrush. Don’t scrub off the old cement with anything sharp.
- Cover the exposed tooth with temporary dental cement from the pharmacy, or place the crown back using temporary cement if it fits easily.
- Chew on the other side and avoid sticky or hard foods.
- Call your dentist to book a visit within 1 to 3 days.
Why do dental crowns fall out?
- Decay under the crown: bacteria get in at the edge and weaken the tooth, so the crown loosens.
- Cement wearing out: after many years, cement can break down.
- Sticky or hard foods: caramel, toffee, gum, and ice can pull or crack crowns loose.
- Grinding and clenching: heavy forces stress the cement and crown.
- Too little tooth structure: a short or heavily filled tooth gives the crown less to grip.
- Poor fit: a crown that doesn’t seal well at the edges can leak and loosen.
- Temporary crowns: these are designed to come off easily and often do.
What causes a crown to feel loose before it falls out?
Crowns often give warning signs. Pay attention if you notice:
- A crown that moves slightly when you chew sticky food
- A bad taste or smell from around the crown
- Food catching at the edge of the crown
- New sensitivity to cold or sweets under the crown
- A dark line or gap where the crown meets the gum
Calling at this stage often means a simple re-cement instead of treating a broken or decayed tooth later.
How long do dental crowns usually last?
Most crowns last 10 to 15 years, and many last 20 years or more. Lifespan depends on the material, how much natural tooth supports it, your bite, grinding habits, and home care. Porcelain-fused-to-metal, zirconia, and gold crowns are all durable. Regular checkups let your dentist spot wear, chips, or decay at the edges before the crown fails.
What if the crown is on a front tooth?
Losing a front crown can feel embarrassing, especially before work or an event. Call your dental office right away and explain the situation. Many offices can fit you in quickly for a re-cement or a temporary crown. In the meantime, temporary cement from the pharmacy can hold it in place for a short time, but avoid biting into food with that tooth.
Is a lost crown an emergency?
| Situation | How soon to be seen |
|---|---|
| Crown off, little or no pain | Within 1 to 3 days |
| Sensitivity to cold or air | Within 1 to 2 days |
| Tooth underneath broken | Same or next day |
| Severe pain, swelling, or fever | Same day |
| Front tooth crown lost before an event | As soon as possible for appearance |
| Swallowed or inhaled crown | Swallowed: usually passes, call your doctor. Coughing or trouble breathing: seek medical care immediately. |
What should you avoid?
- Don’t use superglue, household adhesives, or denture adhesive to reattach a crown. They can damage the tooth and make proper re-cementing harder.
- Don’t force the crown on if it doesn’t sit easily. You could crack the tooth or swallow the crown.
- Don’t leave the tooth exposed for weeks. It can decay, crack, or shift.
- Don’t chew hard or sticky foods on that side.
- Don’t throw the crown away.
What will your dentist do?
- Examine the tooth and crown to see if both are intact.
- Take an X-ray to check for decay or cracks under the crown.
- Clean the tooth and crown to remove old cement.
- Re-cement the original crown if the fit and tooth are good.
- Treat decay and rebuild the core if needed, then re-cement or make a new crown.
- Place a temporary crown if a new one is needed.
- Discuss root canal or extraction if the tooth is severely damaged.
Can the same crown be put back on?
Often, yes. If the crown is undamaged, fits well, and the tooth underneath is healthy, it can usually be cleaned and re-cemented in one short visit. If there’s new decay, a broken tooth, or a cracked crown, you’ll likely need a new crown, sometimes with a core build-up or post.
Re-cementing vs new crown: how do they compare?
| Re-cement original crown | New crown | |
|---|---|---|
| When it works | Crown intact, no decay, good fit | Decay, cracked crown, broken tooth |
| Visits | Usually 1 | Usually 2 |
| Extra treatment | Rarely | May include filling, core, or root canal |
How can you keep crowns from falling out?
- Brush twice a day and floss daily, especially where the crown meets the gum.
- Avoid very sticky candies and chewing ice.
- Wear a night guard if you grind.
- Keep regular checkups so your dentist can check crown edges on X-rays.
- Call promptly if a crown feels loose, high, or tender.
What if it’s a temporary crown?
Temporary crowns are made to come off easily for the final crown visit. If one falls out, keep it, clean it, and put it back with temporary cement or a dab of toothpaste for a short time. Call your dental office, since the tooth can shift or become sensitive without it, and the final crown might not fit properly.
Common myths about lost crowns
“It doesn’t hurt, so it can wait months.”
An exposed tooth is weaker and more prone to decay and cracking. Neighbouring teeth may also shift.
“Superglue is a good temporary fix.”
Superglue isn’t safe for your mouth and can make proper repair harder.
“Crowns last forever.”
Most crowns last 10 to 15 years or more with care, but they can loosen or wear and may need replacing eventually.
“Getting a crown re-cemented is painful.”
Re-cementing is usually quick and comfortable. Freezing is used if the tooth is sensitive.
Real patient examples
The caramel apple. A woman’s crown came off while eating a caramel apple. The crown and tooth were healthy, and it was re-cemented in 20 minutes.
The hidden decay. A man’s 15-year-old crown fell off. An X-ray showed decay under it. After a filling and core build-up, a new crown was made.
The superglue mistake. A patient glued his crown back on. It sat crooked and irritated the gum. Removing the glue took extra time before a proper re-cement.
Finding a dental office in Barrie for crown repairs
Look for a clinic that can see you promptly, checks for decay with X-rays, and explains whether re-cementing or a new crown is best. Care should come from licensed dental professionals registered with the Royal College of Dental Surgeons of Ontario (RCDSO).
Ardagh Family Dentistry is a trusted Barrie dental clinic with a fully equipped, wheelchair-accessible facility serving families of all ages. Located at Circle K Plaza in the Ardagh Bluffs area, it’s a convenient dental office in Barrie for quick crown repairs and long-term care.
Services include preventive care, sealants, digital radiography, cleanings, sport guards, extractions, root canals, teeth whitening, dentures, crowns, bridges, and night guards, plus nitrous oxide for patients with dental anxiety. New patients and CDCP (Canadian Dental Care Plan) patients are welcome.
Visit 225 Ferndale Dr. S., Unit 7, Barrie, ON L4N 6B9, call +1 705-315-0219, or email info@ardagh.ca. If your crown has just come off, mention it when you call so the team can find a prompt time with a family dentist in Barrie.
Frequently asked questions
Can I put my crown back on myself?
Only temporarily, using pharmacy temporary dental cement, and only if it fits easily. See a dentist within a few days to have it properly cemented.
What if I swallowed my crown?
It usually passes on its own within a few days. Call your doctor for advice. If you’re coughing or have trouble breathing, get medical help right away.
How long can I go without my crown?
Try to be seen within 1 to 3 days. The longer the tooth is exposed, the higher the risk of decay, breakage, or shifting.
Why does my tooth hurt after my crown fell off?
The exposed tooth surface may be sensitive to air, temperature, and pressure. Temporary cement and sensitivity toothpaste can help until your visit.
Will insurance or CDCP cover re-cementing a crown?
Coverage varies by plan. The front desk can check your benefits before treatment.
Conclusion
If your crown falls out, save it, protect the tooth, and see a dentist within a few days.
Many crowns can simply be cleaned and re-cemented if the tooth underneath is healthy.
Avoid household glues and hard foods, and call sooner if you have pain or swelling.
