How Long Will a Root Canal Last?

When you invest the time and care to save a tooth with a root canal, it is natural to wonder how long the results will last. The reassuring news is that with the right treatment and follow-up care, a root canal can preserve your natural tooth for many years, and in some cases, for life. At Mint Dental, serving patients across the Kansas City metro, we use advanced techniques and restorative options like dental crowns to give your tooth the best chance at long-term success.

According to the American Dental Association, a tooth treated with a root canal and properly restored can last a lifetime with good oral hygiene and routine dental care. Studies show that root canals often last well over a decade on average, especially when the tooth is protected by a crown placed soon after treatment. Many patients experience results that last 15–20 years or more when they follow up with a crown and maintain regular checkups.

Think of it this way: a root canal is not a temporary patch. It is a treatment that allows you to keep your natural tooth structure. When you protect that tooth with a strong restoration and care for it daily, it can serve you well for decades.

Several factors work together to affect the lifespan of your treated tooth:



• Type and location of the tooth
  Front teeth usually last longer than molars because they handle less chewing force. Molars take on more stress from grinding and chewing, which means they are more vulnerable to wear or fracture if not protected with a crown.

• Quality of the treatment and seal
  A precise, well-sealed root canal reduces the chance of infection coming back. At Mint Dental, our team uses advanced dental technology to ensure accuracy and comfort during every procedure. A well-done root canal lays the foundation for lasting results.
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• Timely crown placement
  A crown adds vital protection, especially on back teeth. Without it, the tooth is more likely to fracture. Placing a crown soon after the root canal greatly improves long-term success.
  See our dental crown services »

• Your daily habits
  Brushing, flossing, and routine dental hygiene visits help prevent new decay that could weaken the tooth. Small steps at home have a big impact on keeping your restored tooth healthy.
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• Gum and bone health
  Strong gums and bone keep the tooth stable. Gum disease, if untreated, can shorten the life of a root canal and even lead to tooth loss.
  Protect your gums with periodontal treatment »

How to make your root canal last longer

The good news is you have a big role to play in keeping your treated tooth healthy. Here are practical steps that make a real difference:



• Schedule your permanent crown soon after your root canal. Waiting too long leaves the tooth unprotected.
• Use a nightguard if you grind your teeth at night. Grinding puts extra force on teeth and crowns, and a guard can prevent cracks.
• Keep up with regular cleanings and exams. Your dentist can spot early signs of problems before they cause pain or damage.
• Avoid chewing ice, biting fingernails, or using teeth to open packages. These habits increase the risk of fractures.
• Treat gum issues promptly. Healthy gums are essential for tooth stability and long-term oral health.

When patients follow these guidelines, it is very common for root canals to last decades without complications.

Will I ever need retreatment?

While many root canals last for decades, there are times when a tooth may need additional attention. Retreatment might be needed if the tooth develops new decay, if the crown becomes damaged, or if bacteria find a way back inside. Signs to watch for include:

• Pain when chewing or biting down
• Swelling around the tooth or gums
• Sensitivity to hot or cold after healing should be complete
• A pimple-like bump on the gums near the tooth

If you notice these symptoms, contact Mint Dental right away. Prompt care can often save the tooth with retreatment or a simple crown adjustment. In rare cases, an endodontic surgery called an apicoectomy may be recommended to treat infection at the tip of the root.
Learn more about our root canal services »
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How root canals compare with extractions and implants

Saving your natural tooth is usually the best option for comfort, function, and appearance. A successful root canal keeps your natural root in place and helps maintain your jawbone health. This means you can continue chewing and smiling naturally, without the need for a replacement tooth right away.

That said, if a tooth is too damaged to save, an extraction followed by a dental implant may be recommended. Implants are durable and look natural, but they often require more time, additional procedures, and higher cost compared to saving a tooth with a root canal. Whenever possible, dentists prioritize preserving your natural tooth first.
Read about dental implants »

Realistic Expectations

It is important to understand that no dental treatment can be guaranteed to last forever. Just as fillings and crowns eventually need replacement, root canals have a natural lifespan. But the combination of a well-done root canal, a properly placed crown, and ongoing preventive care gives you the best chance at keeping your tooth for life.

Compassionate care across Kansas City

At Mint Dental, we believe your smile deserves every chance to last. Whether you are coming to us for your first root canal or for retreatment, our skilled team provides gentle care backed by the latest technology. With locations in Lenexa, Shawnee, Lee’s Summit, and Independence, we make it easy to get the care you need close to home.

Ready to protect your smile?

If you have questions about root canal treatment or are experiencing tooth pain, don’t wait. Call your nearest Mint Dental location to request an appointment. Together, we can keep your natural teeth strong and healthy for years to come.