A crown protects a damaged tooth, but it does not last forever. Daily use wears down even strong materials. The seal underneath can loosen, and the crown itself can thin over the years of chewing and grinding.
Treating these signs early may help prevent more extensive treatment, such as root canal therapy or tooth extraction.
Persistent Tooth Sensitivity
Some sensitivity is normal immediately after a crown is placed. If a tooth stays comfortable for years but suddenly feels sensitive, the crown may need replacement. This happens when the seal between the crown and your tooth fails.
This can expose the underlying tooth structure. Hot or cold temperatures then reach the nerve directly. If this sensitivity continues, visit your dentist to determine whether the crown needs to be replaced.
A Loose Dental Crown
A crown that fits well does not move. If yours shifts or wobbles while you chew, that movement means the fit has failed.
Even a small gap under a loose crown gives bacteria a place to settle. Decay can spread there quickly, and brushing cannot reach it. Left unaddressed, this puts the tooth underneath at risk of extraction.
Visible Wear or Cracks
Examine your crown from time to time. Chips, hairline cracks, or areas of thinning in the material are all warning signs. Porcelain and composite crowns can crack under the strain of grinding or biting something hard.
A crack, even a small one, opens a path for bacteria. Once that happens, the crown can no longer protect the tooth effectively, and replacement with a new dental crown is usually the best option.
Gum Changes Around the Crown
Gum tissue around a healthy crown looks firm and pink. Redness, swelling, or bleeding at that spot may signal irritation or infection near the crown.
Sometimes the edge of the crown is the cause, either through irritation or a poor fit. Gums can also recede over time, which exposes the margin of the crown and raises the risk of decay underneath.
Decay Beneath the Crown
The tooth under a crown remains at risk for decay. A broken seal allows bacteria to enter the space beneath the restoration. Because this area is hidden, decay often spreads for months before you notice any visible damage.
Bad breath, an unpleasant taste, or a dark line near the gum are early warning signs. By the time you notice these, decay may already damage the inner tooth. A quick checkup prevents further harm.
Bite Changes or Discomfort
If your crown feels high when you bite down, that usually means your bite has shifted, either because the crown moved or wore down unevenly.
An uneven bite puts extra force on one tooth. Over time, that pressure can cause jaw discomfort or crack the crown itself. A dentist can adjust the crown or recommend replacement if the fit has changed.
The Age Factor
Most crowns hold up for 10 to 15 years. A crown nearing that age should be evaluated more closely, even if it feels comfortable, since wear builds up slowly and often without symptoms.
Routine checkups allow a dentist to track older crowns and monitor future treatment needs. Identifying wear before it becomes a problem is often less costly than emergency treatment.
Final Thoughts
Dental crowns can last for many years with proper care and regular dental checkups. If you notice sensitivity, looseness, or visible damage, schedule an evaluation as soon as possible. Call Porter Smiles Dental at (281) 519-7200 to schedule an appointment, and the team will evaluate your crown and walk you through what comes next.