Do I Really Need My Dental Crowns Replaced?
Dental crowns are built to protect damaged teeth and restore function, but they are not lifetime devices. They only need replacing when they stop doing their job. Many patients assume an old crown must automatically be changed, but age alone is not a reason. The real question is simple: is the crown still sealing and protecting the tooth or not?
This guide covers:
What it means when a crown needs replacing
Common reasons crowns fail
Symptoms to watch for
Treatment options
How to manage the tooth before your appointment
FAQs about crown replacement
What Does Crown Replacement Actually Mean?
Replacing a crown involves removing the existing cap, assessing the underlying tooth for decay or cracks, and fitting a new crown that seals properly. A stable crown that still fits accurately does not need replacing, regardless of age or appearance. Replacement is only required if the crown is failing or the tooth underneath is compromised.
Why Do Dental Crowns Need Replacing?
Crowns are durable, but they rely on the integrity of both the material and the tooth they cover. Problems usually fall into one of the categories below.
1. Decay Under The Crown
This is the most common reason. If bacteria reach the tooth margin, decay will spread underneath the crown. Once this happens, the crown must be removed to clean and restore the tooth. Leaving it untreated risks infection and tooth fracture.
2. A Poor Fit Or Open Margins
If the edge of the crown isn’t tight against the tooth, bacteria can enter. This can happen due to gum recession, cement breakdown, grinding, or an originally poor fit. An open margin means the crown is no longer sealing the tooth.
3. Cracked Or Broken Crown
Chipped porcelain, fractured metal, or visible cracks indicate structural failure. A weakened crown can break completely or expose the tooth to new decay.
4. Tooth Pain Or Infection
If the tooth begins to ache, becomes sensitive, or shows signs of infection, the crown may need replacing after the underlying issue is treated. Pain is a warning sign that something inside or around the tooth has changed.
5. Gum Recession
When the gum drops and exposes the tooth root or crown margin, decay risk increases. In some cases, replacement is advised to protect the exposed area.
Signs And Symptoms Your Crown May Need Replacing
You may notice one or more of the following:
Sensitivity to hot, cold, or sweet foods
Pain when biting or chewing
A bad taste or smell around the crown
Food trapping at the crown edge
Visible gap between crown and gum
Chips, cracks, or looseness
Inflammation or swelling around the gumline
These symptoms don’t confirm a failing crown, but they do mean the crown needs proper assessment.
Treatment Options When A Crown Fails
Your dentist will choose the treatment based on how much of the tooth is still healthy.
Crown Replacement
The most common solution. The old crown is removed, decay is treated, and a new crown is placed with an accurate fit and seal.
Filling Or Bonding
If the decay is minor and accessible at the edge of the crown, a small repair may be possible without removing the crown, but this is only appropriate in very limited cases.
Root Canal Therapy
If decay or infection has reached the pulp, root canal treatment may be needed before placing a new crown.
Post And Core
If the tooth has lost significant structure, additional support may be required before the new crown is fitted.
How To Manage Symptoms Until You See The Dentist
If you suspect your crown is failing but can’t get an appointment immediately, you can reduce the risk and discomfort:
Brush and floss gently around the crown
Use warm salt water rinses to reduce irritation
Avoid sticky, hard, or sugary foods
Use over the counter pain relief if needed
Avoid chewing on the affected side
These steps are temporary. A failing crown needs a proper dental evaluation.
Frequently Asked Questions
Do all old crowns need replacing?
No. A crown that fits well, seals properly, and has no decay can last decades.
Can a crown be repaired instead of replaced?
Small edge repairs are sometimes possible, but true crown failure requires replacement.
How do dentists detect problems under a crown?
Bitewing or Periapical X rays, clinical inspection, and checking crown margins are the standard methods.
How long should a dental crown last?
There is no fixed lifespan, but ten to fifteen years is common. Many last far longer with proper care.
Can a failing crown damage the tooth?
Yes. Delayed treatment can lead to deep decay, cracking, or infection.
