What Do I Do If My Dental Crown Falls Off?
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Townsville Dental Directory editorial team
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Updated 19 May 2026
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In This Guide
What to Do When Your Dental Crown Falls Off
A dental crown falling off is more common than most patients expect. According to a study published in the Journal of Prosthetic Dentistry, approximately 5 to 7 per cent of cemented crowns debond within the first five years, with the rate increasing as the cement ages. The good news is that a fallen crown is usually not a dental emergency that requires an after-hours visit — but it does require prompt attention within 24 to 48 hours to protect the underlying tooth from sensitivity, fracture, and infection.
At Townsville Dental Clinic, we see patients with dislodged crowns regularly and reserve same-day appointment slots for urgent cases. In many instances, the original crown can be cleaned, checked, and recemented in a single short visit — saving you the time and cost of a full replacement.
Step-by-Step: What to Do Right Now
Follow these steps as soon as your crown comes off:
- Retrieve the crown — if you swallowed it, don’t panic. It will pass naturally and is not harmful. If you have it, rinse it gently under lukewarm water. Do not scrub the inside surface, as this can remove residual cement and affect the refit.
- Inspect the tooth — look in a mirror. If the tooth stump is intact and there is no visible dark decay, the crown can likely be recemented. If you see a broken tooth or dark discolouration, a new crown or alternative restoration may be needed.
- Manage sensitivity — the exposed tooth may be sensitive to air, temperature, and pressure. Avoid hot, cold, and sweet foods and drinks on that side.
- Apply temporary cement — purchase temporary dental cement (Recafix, DenTek, or similar) from a pharmacy. Apply a thin layer inside the crown, press it gently onto the tooth, and bite down on gauze to seat it.
- Call your dentist — book an appointment within 24 to 48 hours. At Townsville Dental Clinic, and mention the crown is off so we can prioritise your booking.
Do not use superglue, household adhesives, or chewing gum. These substances are toxic, prevent proper recementation, and can cause irreversible damage to the tooth.
What Happens at the Dental Appointment
When you visit Townsville Dental Clinic with a fallen crown, your dentist will:
- Examine the tooth — check for decay, cracks, or fractures using visual inspection and X-rays.
- Assess the crown — verify the crown is undamaged, fits correctly, and has no cracks or chips.
- Clean both surfaces — remove old cement from the crown and the tooth stump.
- Recement or replace — if the tooth and crown are both intact, the crown is recemented with permanent dental cement. If decay is present, it is removed first. If the crown or tooth is damaged beyond repair, a new crown is fabricated.
Recementation takes approximately 20 to 30 minutes and costs $100 to $250 at Townsville Dental Clinic. A new crown costs $1,200 to $1,800 and requires two appointments over 2 to 3 weeks.
Common Reasons Crowns Fall Off
| Cause | Explanation |
|---|---|
| Cement washout | Cement gradually breaks down over years of exposure to saliva and chewing forces |
| Decay under the crown | Bacteria can enter at the crown margin and erode the tooth, undermining the bond |
| Sticky foods | Toffees, caramels, and chewing gum can grip and pull the crown off |
| Bruxism | Teeth grinding creates lateral forces that loosen the cement seal |
| Poor original fit | An ill-fitting crown has a higher debonding rate due to uneven cement distribution |
| Trauma | A blow to the face or biting something unexpectedly hard can dislodge a crown |
How to Prevent Your Crown From Falling Off Again
- Wear a night guard if you grind your teeth — bruxism is a leading cause of repeat crown failure.
- Avoid sticky foods on the crowned tooth, particularly toffees, caramels, and chewing gum.
- Maintain excellent oral hygiene — brush twice daily and floss around the crown margin to prevent decay.
- Attend regular check-ups — your dentist checks crown integrity at every 6-monthly examination.
- Address bite issues — an uneven bite places excessive force on specific teeth and can loosen crowns over time.
Related Services
Ready to book? Contact Townsville Dental Clinic
Frequently Asked Questions
What should I do if my dental crown falls off?
Stay calm and retrieve the crown if possible. Rinse it gently under lukewarm water without scrubbing the inside surface. Place it in a clean container and contact your dentist within 24 to 48 hours. In the meantime, avoid chewing on the exposed tooth, apply temporary dental cement from a pharmacy if needed, and avoid sticky or hard foods. Do not attempt to glue the crown back with household adhesives such as superglue, as these are toxic and can damage the tooth structure permanently.
Can I use temporary cement from the pharmacy?
Yes. Over-the-counter temporary dental cement such as Recafix or DenTek is safe to use as a short-term measure. Clean the inside of the crown, apply a thin layer of temporary cement, and gently press the crown back onto the tooth. Bite down softly on a piece of gauze to seat it. This is a temporary fix only — temporary cement weakens within days and the crown can loosen again. You still need to see your dentist within 24 to 48 hours for proper recementation or replacement.
Why did my dental crown fall off?
Common reasons include weakened or washed-out cement over time, decay forming underneath the crown that undermines the bond, eating sticky or hard foods that dislodge the crown, a poor original fit, teeth grinding (bruxism) that places excessive lateral force on the crown, or trauma to the mouth. According to a review in the Journal of Prosthetic Dentistry, cement failure and secondary caries are the two most frequent causes of crown debonding within the first ten years.
Is a loose dental crown an emergency?
A loose or fallen crown is an urgent dental issue but not usually a life-threatening emergency. The exposed tooth is vulnerable to sensitivity, fracture, and bacterial infection. You should see a dentist within 24 to 48 hours. If you experience severe pain, swelling, bleeding, or signs of infection such as fever, seek emergency dental care immediately. At Townsville Dental Clinic, we reserve same-day emergency appointments for urgent situations like this.
How much does it cost to recement a crown in Townsville?
At Townsville Dental Clinic, recementing an existing crown typically costs $100 to $250, depending on whether any adjustment or cleaning of the tooth is required. If the underlying tooth has decay or the crown is damaged and a new crown is needed, the cost is $1,200 to $1,800 for a replacement crown. We process health fund rebates on the spot with HICAPS so you pay only the gap.
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