A dental crown can last 10–15 years or longer with proper care—but eventually, many crowns need to be replaced. Wear, damage, decay, or changes in the underlying tooth or gums can make replacement necessary. Knowing the signs can help you seek treatment before a small problem becomes a bigger one. Here's what to watch for and when to schedule a check-up.
The Crown Feels Loose
A crown that feels loose or moves when you bite or chew may have lost its cement bond. This can happen over time as the cement breaks down, or if decay has developed beneath the crown and weakened the tooth. A loose crown needs attention—don't ignore it. The tooth underneath is exposed and vulnerable.
Pain or Sensitivity
New or increasing sensitivity to hot, cold, or pressure can indicate a problem. Possible causes include:
- Decay at the margin (where the crown meets the tooth)
- A crack in the tooth beneath the crown
- The crown no longer fitting properly
- Infection or nerve issues
Pain that doesn't go away or that worsens should be evaluated promptly.
Visible Damage
Chips, cracks, or wear on the crown can compromise its function and appearance. Porcelain can chip; zirconia can wear over time. If you notice damage—or if your dentist spots it during a checkup—replacement may be recommended. Small chips might be repairable in some cases, but significant damage usually means a new crown.
Decay at the Crown Margin
Decay can develop at the edge where the crown meets the tooth—especially if oral hygiene has slipped or if the margin wasn't perfectly sealed. Your dentist checks this during exams. If decay is detected, the crown may need to be removed to treat the decay, and a new crown placed afterward.
Gum Recession or Aesthetic Changes
If your gums have receded, the margin of the crown may become visible—creating a dark line or an unnatural look. You might also want to replace an older crown to update the color or shape to match your current smile. Cosmetic concerns are valid reasons to consider replacement.
The Crown Is Old
Even without obvious problems, crowns that are 15–20+ years old may be due for evaluation. Materials and techniques have improved. Your dentist can assess whether your crown is still serving you well or if replacement would be beneficial.
The Bottom Line
Regular dental checkups are the best way to catch crown problems early. If you notice looseness, pain, sensitivity, or visible damage, don't wait. Schedule an appointment so your dentist can evaluate and recommend the next steps. Replacing a failing crown protects your tooth and your smile.