Dental fillings are a common solution for tooth decay, but what happens when a tooth with a filling needs additional support? Many people ask, “Can you put a crown over a filling?” The answer is yes — and in many cases, it’s the best choice to protect the tooth long-term.
This article explains when and why a dentist might recommend placing a crown over a filled tooth, and what you should expect during the procedure.
Understanding Fillings and Crowns
What is a Dental Filling?
A filling is used to restore a tooth damaged by decay. The dentist removes the decayed part and fills it with a material such as composite resin, amalgam, or ceramic.
What is a Dental Crown?
A crown is a tooth-shaped “cap” that covers the entire visible portion of the tooth. It is used to restore shape, size, strength, and appearance, especially when a tooth is weakened.
Can You Put a Crown Over a Filling?
Yes, dentists often place a crown over a tooth that has had a filling, especially when:
- The filling is large and the remaining tooth structure is weak
- The tooth is prone to cracking
- The filling is old or worn down
- A root canal has been done on the tooth
- There’s a need for cosmetic improvement
In these cases, placing a crown strengthens the tooth and extends its lifespan.
When Is a Crown Recommended After a Filling?
Here are common situations when your dentist may suggest a crown:
Large Fillings
If a cavity was deep or large, the filling may not be enough to support chewing pressure. A crown provides full coverage.
Repeated Fillings
If a tooth has been filled more than once, there may not be enough natural structure left. A crown ensures stability.
After Root Canal Treatment
A root canal leaves a tooth brittle. Crowns are standard after this procedure to prevent fractures.
Cracked or Fractured Teeth
If a filled tooth shows signs of cracking, a crown prevents further damage.
What’s the Procedure Like?
The crown placement process usually involves two visits:
- First Visit: The dentist reshapes the tooth, takes impressions, and places a temporary crown.
- Second Visit: The permanent crown is cemented into place.
Crowns can be made from porcelain, metal, zirconia, or a combination, depending on durability and aesthetics.
Benefits of Putting a Crown Over a Filling
- Restores full function
- Prevents future cracks or decay
- Strengthens the tooth
- Improves appearance
- Increases lifespan of the tooth
Are There Risks?
Though rare, some risks include:
- Sensitivity after the procedure
- Loosening or dislodging of the crown over time
- Allergic reactions to crown materials (very uncommon)
Regular dental visits and good oral hygiene help avoid these issues.
Final Thoughts
So, can you put a crown over a filling? Absolutely — and it’s often the best way to preserve a damaged or vulnerable tooth. If your dentist recommends a crown after a filling, it’s usually to prevent future problems and save you from more extensive treatments down the road.
If you’re concerned about a filling or feel sensitivity in a previously treated tooth, schedule a consultation with your dentist and explore your options — a crown might be the perfect solution.
