Can a Tooth with Root Canal Therapy Fail or Become Reinfected?

Root canal therapy is a common dental procedure performed to save a tooth that has become infected or inflamed. During this process, the pulp (soft inner tissue) of the tooth is removed, and the interior of the tooth is cleaned, disinfected, and sealed. While root canal therapy is generally successful, there are instances where a tooth with a previous root canal can fail or become reinfected.
 

Understanding the Reasons Behind a Failed Root Canal

During a root canal, the dentist thoroughly cleans out the infected or damaged pulp from the tooth’s canals. However, some teeth have complex root canal systems with tiny, hard-to-reach branches. If all of these areas aren’t fully cleaned and disinfected, bacteria may remain, leading to reinfection.

After root canal therapy, the treated tooth may still be susceptible to new decay, especially if proper oral hygiene is not maintained. A crack in the tooth or new decay can allow bacteria to seep in, leading to reinfection.
 

Following root canal treatment, a crown or filling is usually placed to protect the tooth. If the crown or filling becomes damaged or doesn’t fit properly, bacteria can enter the tooth, causing an infection.
 

In some cases, a delay between the root canal and placing the final restoration (like a crown) may give bacteria the opportunity to re-enter the tooth. Prompt placement of a crown or other restoration can help prevent reinfection.
 

Signs and Symptoms of a Failed Root Canal

If a tooth with a previous root canal has failed or become reinfected, you may experience various signs and symptoms, including:
 

• Persistent or recurring pain in the affected tooth
   

• Swelling or tenderness in the gum around the tooth
   

• Discharge or drainage from the area
   

• Discoloration of the tooth
   

• Sensitivity to hot or cold temperatures
   

These symptoms can range from mild to severe and should not be ignored, as they may indicate the need for further treatment.
 

What Can Be Done If a Root Canal Fails?

If you suspect that your tooth with a previous root canal has failed or become reinfected, it is crucial to schedule an appointment with your dentist as soon as possible. Your dentist will thoroughly examine the affected tooth, perform any necessary tests, and recommend the most appropriate treatment plan to address the issue and restore your oral health.
 

If a tooth with root canal therapy fails or becomes reinfected, there are options available to save the tooth. In many cases, your dentist can perform a root canal retreatment. This involves removing the existing filling material, cleaning the canals again, and placing a new filling. Retreatment can often resolve the issue and save the tooth.
 

If retreatment is not an option, endodontic surgery (such as an apicoectomy) may be recommended. During this procedure, the dentist or an endodontist will remove the infected tissue at the tip of the tooth’s root and seal the canal.
 

In rare cases where the tooth cannot be saved, extraction may be necessary. Your dentist can discuss replacement options, such as a dental implant or bridge, to restore the function and appearance of your smile.
 

How to Prevent Root Canal Failure

The best way to prevent root canal failure is to practice good oral hygiene and take care of your dental restorations. Here are a few tips to help maintain your oral health after root canal therapy:
 

• Brush and floss regularly: Keeping your teeth and gums clean helps prevent decay and reinfection.
   

• Attend regular dental checkups: Regular visits to your dentist allow for early detection of any issues with your root canal-treated tooth.
   

• Avoid chewing hard foods: Be cautious with hard foods like ice or nuts, which can crack a restored tooth.
   

Get in Touch with River Valley Dental Today

While root canal therapy is generally a successful and reliable procedure, it is possible for a tooth with a previous root canal to fail or become reinfected. Understanding the common reasons for these issues, recognizing the signs and symptoms, and seeking prompt professional care are essential for maintaining your oral health and preventing further complications. By working closely with your dentist, you can address any problems and explore the best treatment options to preserve your natural teeth and restore your smile.
 

If you are experiencing any signs or symptoms of a failed root canal, schedule a consultation with River Valley Dental. We will work with you to develop a personalized treatment plan and get your oral health back on track. Contact our office in Tremonton, Utah, by calling (435) 257-7344 to book an appointment today.