What to Do Right Away When Your Crown Falls Off
When a crown falls off, the first step is to find and save it. Gently rinse the crown with warm water to remove any food or old cement. Do not scrub the inside of the crown or try to clean it with sharp objects, as this can alter the fit.
Look at the exposed tooth in a mirror. If you see a small, dark peg or post, that is the prepared tooth structure. It may feel rough or sensitive, but this is normal. If you see a large hole, dark discoloration, or if pieces of tooth came off with the crown, contact your dentist sooner rather than later.
How to Temporarily Reattach the Crown
Over-the-counter dental cement, available at most pharmacies, can hold the crown in place temporarily. Apply a thin layer inside the crown, position it over the tooth, and bite down gently to seat it. Denture adhesive cream also works as a short-term option.
Do not use household glues like super glue or craft adhesive. These products are not safe for oral use and can damage the tooth or the crown, making it harder for your dentist to work with later.
Managing Pain and Sensitivity
The exposed tooth may be sensitive to temperature, air, or pressure. Over-the-counter pain relievers such as ibuprofen or acetaminophen can help. You can also apply a small amount of clove oil to the tooth using a cotton ball for temporary numbing.
If you cannot reattach the crown and the tooth is very sensitive, covering it with sugar-free gum or dental wax from a pharmacy can provide a barrier until your appointment.
Why Dental Crowns Fall Off
Crowns are designed to last many years, but they are not permanent. Several factors can cause a crown to come loose or fall off entirely. Understanding why it happened helps your dentist determine the right fix.
Cement Breakdown Over Time
Dental cement holds the crown to the prepared tooth. Over years of chewing, temperature changes, and exposure to saliva, this cement gradually weakens. Crowns that have been in place for 10 or more years are more likely to come loose simply from normal cement deterioration.
Decay Underneath the Crown
Tooth decay can develop at the margin where the crown meets the natural tooth. As the decay progresses, it undermines the seal between the crown and the tooth. This is one of the most common reasons crowns fail, and it means the tooth will need treatment before a new crown can be placed.
Other Common Causes
- Eating sticky foods (caramel, taffy, or gummy candy) that pull at the crown
- Grinding or clenching your teeth (bruxism), which places excessive force on the crown
- An improper fit or insufficient tooth structure to retain the crown
- Biting into hard foods like ice, nuts, or hard candy
- Trauma from a fall, sports injury, or accident
Can Your Crown Be Recemented or Do You Need a New One?
In many cases, a crown that falls off can be cleaned and recemented at your dental appointment. Your dentist will examine both the crown and the underlying tooth to determine the best course of action.
If the crown is intact, fits well, and the tooth underneath is healthy, recementing is straightforward. The dentist cleans the inside of the crown and the tooth surface, applies fresh dental cement, and seats the crown. The entire process typically takes 15 to 30 minutes.
When a New Crown Is Needed
A new crown is required if the original crown is cracked, chipped, or worn through. A new crown is also necessary if significant decay has developed under the old one, because the tooth shape will change once the decay is removed. If the crown has fallen off multiple times, the tooth may need to be built up with a post and core before a new crown will stay in place.
What If the Tooth Is Too Damaged?
If the underlying tooth has broken below the gum line, has extensive decay, or has a vertical fracture, it may not be possible to place a new crown. In these cases, the tooth may need to be extracted and replaced with a dental implant or bridge. A prosthodontist specializes in these complex restoration decisions and can walk you through your options.
Cost of Recementing or Replacing a Crown
Recementing a crown that is still in good condition is one of the least expensive dental procedures. Costs vary by location and provider, but recementing typically ranges from $50 to $300.
If a new crown is needed, the cost depends on the material (porcelain, zirconia, porcelain-fused-to-metal, or gold) and the complexity of the case. New crowns generally range from $800 to $1,800 per tooth. Costs vary by location, provider, and case complexity.
Most dental insurance plans cover a portion of crown replacement, though many plans have a waiting period or limit replacements to once every 5 to 10 years. Check with your insurance provider about your specific coverage before your appointment.
Is a Lost Crown Urgent?
A lost crown is usually not a dental emergency, but it should be addressed within a few days. The exposed tooth is vulnerable to further decay and damage the longer it goes without protection.
You Can Usually Wait a Few Days If
- The tooth is not painful or only mildly sensitive
- There is no visible decay or broken tooth structure
- You can temporarily reattach the crown or protect the tooth
- The crown came off cleanly and appears intact
Call Your Dentist Right Away If
- You are in significant pain that over-the-counter medication does not relieve
- The tooth is visibly broken, dark, or has sharp edges cutting your tongue or cheek
- You swallowed the crown (this is usually harmless, but your dentist may want an X-ray)
- There is swelling in the gum or face near the tooth
- The crown was part of a dental bridge, and the bridge has shifted
When to See a Prosthodontist for a Lost Crown
A general dentist can recement or replace most crowns. However, a prosthodontist is a dental specialist with 3 additional years of training in restoring and replacing teeth. You may benefit from seeing a prosthodontist if your crown keeps falling off repeatedly, if the underlying tooth has significant damage, or if the crown is part of a more complex restoration like a bridge or implant.
Prosthodontists also handle cases where the tooth needs a post and core buildup before a new crown, or when cosmetic concerns are a priority. If you are unsure whether your situation needs a specialist, your general dentist can advise you on whether a referral to a prosthodontist would be helpful.
Find a Prosthodontist Near You
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