You’re eating dinner and suddenly feel something hard moving around in your mouth.
You look down and realize:
Your crown came off.
It can be alarming, but there are several steps you can take.
First: Save the Crown
If you can find it, rinse it gently and place it somewhere safe.
Do not throw it away.
Depending on the condition of the crown and underlying tooth, your dentist may be able to recement it.
Avoid Chewing on That Side
The exposed tooth may be:
- Sensitive
- Structurally weak
- More vulnerable to fracture
Try to avoid hard or sticky foods until the tooth can be evaluated.
Keep the Area Clean
Brush gently around the tooth.
Food and plaque can accumulate around the exposed preparation, so oral hygiene remains important.
Why Do Crowns Fall Off?
Possible reasons include:
- Cement failure
- Decay beneath the crown
- Tooth fracture
- Crown fracture
- Short or compromised tooth preparation
- Heavy bite forces
- Grinding
- Sticky foods
Related: How Long Do Dental Crowns Last?
Can the Old Crown Simply Be Glued Back On?
Sometimes.
If the crown fits well and the tooth underneath is healthy, recementation may be possible.
If there is significant decay, fracture, or damage beneath the crown, additional treatment may be necessary first.
Should I Use Super Glue?
No.
Household adhesives are not designed for use inside the mouth and can complicate treatment.
Temporary dental cement sold specifically for temporary crown replacement may sometimes be used briefly according to its instructions, but professional evaluation is still recommended.
Is a Lost Crown an Emergency?
It isn’t always a medical emergency, but it should generally be evaluated relatively soon.
Urgency increases if you have:
- Significant pain
- Swelling
- Tooth fracture
- Trauma
- Signs of infection
Frequently Asked Questions
Can I eat without the crown?
Avoid chewing directly on the tooth when possible.
Why is the tooth underneath so small?
A tooth is prepared to create room for the crown and allow the restoration to fit over it.
Does a crown falling off mean I need a new crown?
Not necessarily.
The Bottom Line
If your crown falls off, save it, protect the tooth, and arrange an evaluation.
At Chastain Dental Studio, we evaluate lost or loose crowns for patients throughout Chastain Park, Buckhead, Sandy Springs, and North Atlanta to determine whether the existing crown can be reused or whether the tooth requires additional treatment.





