Many dental crowns last for years, and 10 to 15 years is a common general guide, with some crowns lasting longer. Research shows modern crown materials perform well: a major review found 5-year survival of about 96.6% for glass-ceramic crowns reinforced with leucite or lithium disilicate (such as E-max). How long dental crowns last depends on the material, the tooth beneath, your bite and how well you clean around the crown edge.
A crown is a custom-made cap that covers a weakened, cracked, heavily filled or root-canal-treated tooth. The crown itself does not decay, but the tooth underneath can, which is why care and check-ups matter. This guide from Barton Dental explains average dental crown lifespan, how materials compare, what affects longevity, why crowns fail, warning signs, repair options and how to make your crown last, with details for patients at our office in Hamilton.
What Is the Average Dental Crown Lifespan?
The average dental crown lifespan is commonly quoted as 10 to 15 years, and some crowns last 20 years or more with good care. Research usually reports 5-year and 10-year survival rather than an average age, and most modern crowns show high survival over five years. Individual results vary widely.
A large 2015 systematic review by Sailer and colleagues, published in Dental Materials, pooled 67 studies of more than 14,000 single crowns. It found that most types of all-ceramic crowns had 5-year survival similar to metal-ceramic crowns in both front and back teeth, although zirconia and feldspathic or silica-based ceramic crowns had lower survival in back teeth. Because longer-term data varies between studies, the 10 to 15 year figure is best treated as a guide rather than a guarantee.
How Long Do Different Crown Materials Last?
Different crown materials have different strengths. Glass-ceramic crowns such as lithium disilicate (E-max) and metal-ceramic crowns showed high 5-year survival in research, and zirconia crowns slightly lower. Feldspathic and silica-based ceramic crowns showed the lowest survival. Gold crowns are very durable but visible.
| Material | 5-Year Survival in Sailer 2015 | Strengths | Watch-Outs |
| Leucite or lithium disilicate glass ceramic (such as E-max) | 96.6% | Natural appearance; strong | Often chosen for front teeth and premolars |
| Porcelain fused to metal | 94.7% | Long track record | A dark line can show at the gum over time |
| Zirconia | 92.1% | Very strong core | In this review, chipping of the veneering ceramic and loss of retention were more common |
| Feldspathic or silica-based ceramic | Lower than the other types | Highly aesthetic | Best limited to front teeth |
| Gold or metal alloy | Not separated in this review | Very durable; kind to opposing teeth | Visible |
Your dentist will recommend the material that best balances strength and appearance for the tooth’s position and your bite. The zirconia crowns in the 2015 review were mostly veneered with porcelain, and chipping of that layer was a common problem. Monolithic (unveneered) zirconia avoids a veneering layer, which is one reason it is often used for back teeth, although long-term research on it is still building.
What Factors Influence the Longevity of a Crown?
The main factors in crown longevity are the material, how much healthy tooth remains underneath, oral hygiene at the crown edge, habits such as grinding, diet and how regularly the crown is checked. Back-tooth crowns face heavier forces than front-tooth crowns.
Oral hygiene
Brushing twice daily, cleaning between teeth and reducing frequent sugary snacks help prevent decay where the crown meets the tooth, which is the most vulnerable area.
Habits and lifestyle
Grinding or clenching, nail-biting, chewing ice and opening packages with your teeth can crack or loosen crowns. If you clench, our article on signs TMJ is causing headaches explains related symptoms.
Remaining tooth structure
A crown on a tooth with plenty of healthy structure, sometimes rebuilt with a core, tends to last longer than one on a badly broken tooth.
Regular check-ups
Routine visits allow your dentist to check the crown margins, gums and bite, and take X-rays to find decay before it undermines the crown.
Why Do Dental Crowns Fail?
Crowns most often fail because of decay at the edge of the crown, gum recession exposing the margin, loss of retention (the crown coming loose), chipping or fracture of the material, or problems with the tooth underneath, such as a crack or nerve infection. Many of these develop slowly and can be caught at check-ups.
| Cause | What Happens |
| Secondary decay | Bacteria attack the tooth at the crown edge |
| Gum recession | The margin becomes exposed and harder to clean |
| Loss of retention | Cement washes out and the crown loosens |
| Chipping or fracture | Porcelain chips, often from grinding |
| Tooth problems | A crack or nerve infection develops beneath the crown |
Signs a Dental Crown May Need Replacement
Watch for new sensitivity, pain when biting, a crown that feels loose, visible cracks or chips, a dark line or gap at the gumline, or a bad taste around the crown. Any of these warrants a check-up, because early treatment is usually simpler and less costly.
| Sign | Possible Cause |
| Increased sensitivity | Exposed margin or decay |
| Pain when biting | Crack, loose crown or tooth problem |
| Visible cracks or chips | Material fracture |
| Gum recession at the crown edge | Exposed margin, cleaning difficulty |
| Looseness or shifting | Cement failure or decay underneath |
Can a Crown Be Repaired, or Does It Need Replacing?
Some crown problems can be repaired. A crown that has come off with a healthy tooth beneath can often be cleaned and re-cemented, and small chips can sometimes be polished or repaired with bonding. Decay under the crown, a large fracture or a poorly fitting crown usually means replacement.
Replacing a crown means removing the old one, treating any decay, rebuilding the tooth if needed and making a new crown. If a crown comes off, keep it, avoid chewing on that side and book an appointment. Our guide to dental crown cost in Ontario explains what affects replacement costs.
Do Crowns Last as Long on Root-Canal-Treated Teeth?
Crowns are often recommended on back teeth after a root canal because those teeth are more likely to crack without full coverage. Root-canal-treated teeth can last many years with a well-fitting crown, but the tooth beneath is more brittle, so careful protection and check-ups matter. Our Root Canal Therapy page explains that treatment.
How Do You Make a Dental Crown Last Longer?
You can help a dental crown last longer by cleaning carefully around the crown edge, using fluoride toothpaste, limiting frequent sugary snacks and drinks, wearing a night guard if you grind, avoiding hard objects and keeping regular check-ups with X-rays.
- Brush twice daily, angling the brush toward the gumline.
- Floss or use interdental brushes around the crown every day.
- Use fluoride toothpaste to help protect the margins.
- Wear a night guard if you grind; see our TMJ Therapy page.
- Avoid chewing ice, hard sweets or non-food items.
- Attend regular check-ups and cleanings.
What Happens When a Crown Is Replaced?
Replacing a crown usually takes two treatment visits. The old crown is carefully removed, the tooth is checked and any decay treated, and the tooth may be rebuilt with a core. New impressions or scans are taken, a temporary crown is placed, and the new crown is fitted once the lab has made it.
- Assessment: exam and X-rays to see why the crown is failing.
- Removal: the old crown is sectioned and lifted off.
- Treatment: decay is removed; the tooth may need a core build-up or, occasionally, a root canal.
- Records: impressions or a scan, with a temporary crown.
- Fitting: the new crown is checked for fit, colour and bite, then cemented.
Does Insurance Cover Crown Replacement?
Many private plans cover crown replacement under major services if enough time has passed since the last crown on that tooth and there is a clinical reason, such as decay or fracture. Replacement limits of several years are common. Under the Canadian Dental Care Plan, eligible adults aged 18 and older may receive 1 crown per tooth in any 96 months and up to 4 crowns in any 120 months, with preauthorization.
The CDCP Dental Benefits Guide sets out the criteria. For private plans, a predetermination from your dental office confirms what your plan will pay.
How Often Should Crowns Be Checked?
Crowns should be checked at your regular dental visits. Your dentist examines the margins, gums and bite, and takes X-rays periodically to look for decay under the crown edge, which is often invisible from the outside. Catching a small problem early can mean a simple repair rather than a full replacement.
Dental Crowns at Barton Dental in Hamilton
At Barton Dental, at 100-1130 Barton St. E, our general dentists provide zirconia, all-ceramic (E-max) and porcelain-fused-to-metal crowns. At each visit we examine existing crowns, their margins, the surrounding gums and your bite, and take digital X-rays when needed. If a crown needs repair or replacement, you receive a complete written cost breakdown first, we direct bill most insurance providers and we can submit a predetermination on request.
Learn more on our Crowns & Bridges page, read our molar crown price breakdown, or see how long dental bridges last.
Frequently Asked Questions
How long does a dental crown typically last?
A common guide is 10 to 15 years, and some crowns last 20 years or longer with good care. Research on modern materials shows high survival over five years, with lithium disilicate and similar glass-ceramic crowns at about 96.6%. The lifespan of your crown depends on the material, the tooth underneath, your bite, grinding habits and how well you clean around the crown edge, so regular check-ups matter.
Which crown material lasts the longest?
Gold and other metal crowns are very durable, and research shows porcelain-fused-to-metal and lithium disilicate crowns perform well over five years, with zirconia slightly lower in the 2015 review. The best choice depends on where the tooth is and how you bite. Front teeth often suit lithium disilicate for appearance, while molars and patients who grind may suit zirconia. Your dentist will recommend the most suitable option for your tooth.
Can a crown last a lifetime?
Some crowns last decades, but most people should expect to replace a crown at some point. Decay at the crown edge, gum recession, wear and chipping all develop over time. Good daily cleaning, a night guard if you grind and regular check-ups with X-rays give your crown a better chance of a long life, and help catch small problems before a full replacement is needed.
What should I do if my crown falls off?
Keep the crown, rinse it gently and store it in a small container. Avoid chewing on that side, and book an appointment as soon as possible, because the exposed tooth can become sensitive, break or shift. If the tooth and crown are healthy, the crown can often be cleaned and re-cemented. Do not use household glue, which can damage the tooth and make re-cementing harder.
Why does my old crown have a dark line at the gum?
A dark line near the gumline is common with older porcelain-fused-to-metal crowns, where the metal edge shows as the gum recedes over time. It is often cosmetic, but it can also signal recession or decay at the margin. Your dentist can check the area and, if needed for health or appearance, discuss replacing the crown with an all-ceramic option such as zirconia or E-max.
Book a Crown Check in Hamilton
How long dental crowns last depends on the material, your habits and the health of the tooth underneath, and many crowns serve well for 10 to 15 years or longer. Regular check-ups are a simple way to protect yours.
If your crown feels different, or you need one replaced, request an appointment
This article is general information, not dental, insurance or tax advice. Speak with a dentist about your own crown and teeth.