What Is Endodontic Retreatment? Signs Your Root Canal May Have Failed

Root canal treatment is designed to remove infection from inside a tooth and protect it from future damage, but in some cases, a tooth may not heal as expected. When this happens, endodontic retreatment can offer a second chance to save the natural tooth and relieve ongoing discomfort. At Memphis Endodontics in Memphis, TN, our team focuses on advanced endodontic care to diagnose lingering issues after a root canal and recommend the most effective next steps possible. If you've noticed new symptoms or continued sensitivity in a previously treated tooth, it may be time to take a closer look at what endodontic retreatment involves. 

Why would a root canal need to be redone? 

Although the success rate of root canal therapy is high, certain situations can allow bacteria to remain or return inside the tooth. The inner canal system of a tooth can be complex, with narrow or curved canals that may be difficult to fully clean and seal during the initial treatment. Common reasons a root canal would need to be redone include:  

• Hidden or curved canals 
• Missed areas of infection 
• Delayed placement of a crown 
• Cracked or leaking restorations 
• New decay around the treated tooth 

In some cases, a tooth may feel fine for months or even years after a root canal before symptoms return. When that happens, root canal retreatment may be recommended to remove lingering infection and protect the tooth from extraction. 

What are the signs a root canal failed? 

A failed root canal does not always cause immediate or severe symptoms, but there are certain warning signs that may indicate a problem. Some people experience persistent discomfort, while others notice changes in the appearance or sensitivity of the tooth. Some of the most common symptoms of a failed root canal include:  

• Ongoing tooth pain 
• Sensitivity to pressure 
• Swelling in the gums 
• Pimple-like bump on the gums 
• Darkening of the tooth 
• Bad taste in the mouth 

If you notice any of these symptoms, our team can perform a detailed evaluation using advanced imaging to determine whether endodontic retreatment may be needed. 

What happens during endodontic retreatment? 

Endodontic retreatment is similar to the original procedure, but with an added focus on locating and addressing the source of the remaining infection after a root canal. The goal is to thoroughly clean the canals, remove any old filling material, and reseal the tooth to prevent further problems. During endodontic retreatment, our team will typically:  

• Reopen the tooth 
• Remove previous filling material 
• Clean and disinfect the canals 
• Address hidden or missed canals 
• Reseal the canal system 
• Place a temporary restoration 

Once the tooth has healed, we'll discuss the placement of a crown or restoration to help fully protect the tooth. 

Is endodontic retreatment better than tooth extraction? 

In many cases, saving the natural tooth is the preferred option when possible. Natural teeth are designed to function efficiently and maintain the alignment of surrounding teeth. Endodontic retreatment can often remove infection while preserving the tooth structure. Benefits of a repeat root canal vs. tooth extraction include:  

• Maintained bite alignment 
• Natural chewing function 
• Preserved jawbone support 
• Avoiding more complex procedures 
• Lower long-term costs 

While extraction and tooth replacement options, such as dental implants, are available, many patients prefer to keep their natural tooth when retreatment is a viable solution. Again, our knowledgeable providers will closely evaluate your unique case factors to help determine the safest and most effective option for restoring your comfort and dental function once again. 

Save your natural tooth and feel better fast with endodontic retreatment in Memphis, TN 

If you live near Bartlett, Oakland, Arlington, or Munford, TN, and are experiencing symptoms after a previous root canal or have been told your root canal may have failed, our caring team at Memphis Endodontics is here to help. We proudly provide advanced endodontic retreatment designed to get rid of infection and preserve your natural smile. Contact our Memphis, TN endodontic office today to schedule an evaluation and learn whether retreatment may be right for you.