Does that crown come with a guarantee? How long will it last?
- Andrea Fallon DMD
- May 19
- 3 min read
If you’ve ever sat in a dental chair and asked, “How long does a crown last?” you’re not alone. This question pops up all the time in dental offices. Crowns are a common solution for damaged or weakened teeth, but their longevity can feel like a mystery. The truth is, the lifespan of a dental crown depends on many factors, and while dentists can’t offer a lifetime guarantee, they can give you a pretty good idea of what to expect.
Let’s break down what affects the durability of dental crowns and how you can help yours stick around for the long haul.
What is a dental crown and why do you need one?
A dental crown is a cover placed over a tooth to restore its shape, size, strength, and appearance. Crowns protect weak teeth from breaking, strengthen large fillings, or improve the look of a tooth. They can be made from various materials such as ceramic, metal, or a combination of both.
Crowns are designed to be durable, but they don’t last forever. The mouth is an environment where biology, physics and chemistry all intersect. Meaning, there is a multitude of factors that uniquely affect each patient and their crown's longevity. Understanding these factors helps you plan for future dental care and avoid surprises.
How long does a dental crown usually last?
Research shows that the average lifespan of a dental crown ranges from 5 to 15 years, but many crowns last much longer with proper care. A study published in the Journal of Dentistry found that about 50% of crowns last over 10 years, and some can last 25 years or more. Dr. Fallon has personally seen crowns she placed in 2008 still be clinically stable. Thats 18 years which is above the average. On the flip side, she has also seen crowns fail in less than 5 years. This occurs if the patient has a high cavity risk or grinds their teeth without protection of a bite splint (night guard)
Factors that affect the lifespan of a dental crown
Several factors influence how long your crown will last. Some are in your control, while others depend on your dental health and habits.
1. Oral hygiene habits
Good oral hygiene is the foundation for a long-lasting crown. Brushing twice a day and cleaning between your teeth reduce plaque buildup around the crown. Plaque can cause decay at the crown’s edges, leading to failure.
2 . Bite and chewing habits
If you grind or clench your teeth (bruxism), your crown faces extra pressure. This can cause cracks or loosen the crown. Wearing a bite splint (night guard) can protect your crown and natural teeth.
3. Dental work quality and fit
A well-made crown that fits perfectly will last longer. Poorly fitted crowns can trap food and bacteria, causing decay or gum problems.
4. Diet and lifestyle
Sugary and acidic foods increase the risk of decay around the crown. Smoking also harms gum health, affecting crown longevity.
Signs your crown might need attention
Knowing when to see your dentist can save your crown and natural tooth. Watch for:
A loose or wobbly crown
Visible cracks or chips
Gum swelling or redness near the crown
A bad taste or smell around the tooth
A darkness to gum area that wasn't there initially
If you notice any of these, schedule a dental visit promptly.
How to extend the lifespan of a dental crown
You can take simple steps to protect your crown:
Brush with fluoride toothpaste twice daily
Floss carefully around the crown to remove plaque
Wear a night guard if you grind your teeth
Visit your dentist regularly for check-ups and cleanings
Address any dental issues early before they affect the crown
What happens when a crown fails?
If a crown fails, your dentist will evaluate the cause. If a crown simply falls off, it often can be recemented. However, often the crowns that fail need replacement. The underlying tooth might also require treatment if decay or damage has occurred.
Replacing a crown involves removing the old one, preparing the tooth again, and fitting a new crown. While this can be inconvenient, modern crowns are designed to last many years with proper care.
As you can see crowns are a reliable way to protect and restore your tooth's function and beauty. However, their life span depends on a multitude of factors. By understanding these and maintaining good dental habits, you can enjoy your crown for a decade or more. If you have questions about your crown or notice any problems, don’t hesitate to contact our office.
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