How Long Do Dental Crowns Last? Lifespan by Material and How to Make Them Last
Crown lifespan: what the research shows
Dental crowns are among the most durable restorations in dentistry, but they are not permanent. The average crown lasts 10 to 15 years under normal conditions, with many lasting considerably longer depending on the material, the tooth's location, your bite habits, and how well you care for your teeth. Some gold crowns have been documented lasting 25 to 30 years or more. Understanding the lifespan of different crown materials helps you weigh the long-term value of the investment you are making today.
Use our dental crown cost calculator to compare cost per year of service across different materials based on their expected lifespan.
Lifespan by material
| Material | Average lifespan | Failure risk |
|---|---|---|
| Gold or high-noble metal | 20 to 30 or more years | Very low; gold is extremely durable |
| Monolithic zirconia | 15 to 25 years | Low; tough material, no porcelain to chip |
| PFM (porcelain-fused-to-metal) | 10 to 15 years | Moderate; porcelain can chip off metal base |
| All-ceramic or all-porcelain | 10 to 15 years | Moderate; brittle under heavy bite forces |
| Layered zirconia | 12 to 18 years | Low to moderate; porcelain layer can chip |
| Same-day CEREC ceramic | 10 to 15 years | Similar to conventional ceramic |
Why crowns fail before their time
The most common reasons a crown fails earlier than expected are:
- Decay at the margin. Where the crown meets the natural tooth at the gumline, bacteria can work their way under the crown if oral hygiene is poor. Decay in this area is the leading cause of early crown failure and usually requires a full replacement.
- Grinding or clenching (bruxism). Patients who grind their teeth at night put enormous cyclic stress on crowns. Even gold crowns can wear down faster than expected in heavy grinders. A custom nightguard is strongly recommended if you grind.
- Chipping of porcelain. PFM and all-ceramic crowns can chip, particularly in patients with heavy bite forces. Small chips may be smoothed, but large chips often require crown replacement.
- Loose crown. Cement can wash out over time. A crown that feels loose should be seen by a dentist promptly. A dentist can often re-cement the original crown if caught early before decay sets in on the exposed tooth.
- Root canal failure on an already-crowned tooth. If the root of the crowned tooth becomes infected and cannot be successfully retreated, extraction may be necessary, ending the crown's life regardless of its condition.
How to make your crown last longer
- Brush twice daily and floss once daily, paying attention to the gumline around the crown.
- Use a nightguard if you grind or clench, especially for ceramic crowns on back teeth.
- Avoid using crowns to open packages, crack nuts, or bite fingernails.
- Attend regular dental checkups every 6 months so your dentist can catch early signs of decay at the margin or a loosening crown.
- Tell your dentist if you notice any sensitivity to temperature or biting pressure, since these can be early signs that the crown needs attention.
When to replace a crown vs when to repair it
Minor porcelain chips can sometimes be polished smooth or repaired with composite resin. However, if there is decay under the crown, significant structural damage, or if the crown does not fit properly, replacement is usually the better long-term choice. Trying to repair a compromised crown can cost money in the short term while delaying the inevitable replacement and risking further damage to the underlying tooth. Talk to a licensed dentist to determine whether repair or replacement is the right call for your specific crown. Do not make that judgment based on cost alone.
Frequently asked questions
Can a dental crown last a lifetime? Some crowns, particularly well-maintained gold crowns on properly-prepared teeth, do last 30 or more years. However, no dentist or manufacturer guarantees a lifetime lifespan. Most patients should plan for eventual replacement after 10 to 20 years.
How do I know when my crown needs to be replaced? Signs include pain or sensitivity around the crown, visible cracking or chipping, a dark line at the gumline (indicating old PFM metal), or your dentist finding decay at the margin on an X-ray. Annual dental visits allow early detection.
Does replacing a crown cost more than the original? Replacement crowns cost roughly the same as the original, since the procedure involves the same preparation and fabrication steps. If the tooth underneath has new decay or structural issues, additional preparatory procedures may add cost.
Bottom line
With proper care, dental crowns typically last 10 to 15 years, and gold or zirconia crowns often exceed that. Good oral hygiene, nightguard use if you grind, and regular dental checkups are the most reliable ways to extend your crown's life. Use our dental crown cost calculator to see the long-term cost-per-year comparison by material, and always consult a licensed dentist about the condition of any crown you are concerned about.
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