A root canal is a standard dental treatment. It is necessary when the innermost portion of your tooth, the pulp, is infected or injured. It is highly effective and can preserve your natural tooth. Common reasons for a root canal include deep decay or an injured tooth. Root canals are highly effective procedures. However, in rare cases they can fail. How to recognize a failed root canal? 6 key signs below.

How to recognize a failed root canal? 6 key signs

There are some common symptoms you may encounter post-root canal. This includes some swelling and some minor discomfort. If you experience any of the following, consult with a dentist. The following symptoms are not normal and can indicate root canal failure.

Persistent Pain:

Some pain or discomfort after a root canal is normal. However, persistent pain is a sign of potential failure. It generally indicates that the initial infection or inflammation in the canal was not completely resolved. Leftover bacteria can cause persistent pain and needs to be addressed right away. If your pain persists for more than a few days it’s important to contact your dentist.

Swelling and Inflammation:

Mild swelling after a root canal is not a serious cause for concern. However, swelling or inflammation that persists indicates a more serious issue. Similar to persistent pain, swelling and inflammation are caused by bacteria. This can be due to your initial infection or a new infection after your root canal. If left untreated this can lead to an abscess. This can impact your oral health and potentially impact your surrounding teeth. Swelling that lasts beyond just a few days after your root canal is not normal and requires treatment.


You shouldn’t have any leakage after a root canal. In fact, if you notice pus, blood, or anything else coming from your tooth, it’s time to contact your dentist. Leakage is a sign of root canal failure as your tooth should be properly sealed. Leakage often indicates a broken seal or a seal that wasn’t effective at all. This can lead to reinfection and impact your overall oral health.

Temperature Sensitivity:

Tooth sensitivity is common before a root canal. However, you should not experience tooth sensitivity after your root canal. If you do, it can be a sign of failure. Temperature sensitivity can be caused by inadequate treatment or reinfection. Monitor how long you experience this and contact your dentist if it lasts more than one week.

Bad Taste or Smell:

A bad taste in your mouth or foul breath is not normal after a root canal. If you experience this, it’s advisable to contact your dentist. This can indicate the presence of bacteria. It can either be due to an ineffective root canal or reinfection. Either way it needs to be addressed right away.


Discoloration is not normal after a root canal. If you notice that your tooth becomes darker or discolored after your root canal, it’s a sign of failure. It can be due to an unresolved infection or damage to the pulp of your tooth. Monitor color changes closely and contact your dentist in Burbank if the problem persists.

Root Canal in Burbank

If you need a root canal in Burbank, it’s important to get treated right away. If left untreated, it can cause serious issues with your oral health. Not only can you lose your infected tooth, but it can also impact your surrounding teeth. Further, it can impact your overall health. The team at Coastland dental are skilled in root canal therapy. They offer effective and pain-free root canals that can ensure your oral health stays in good shape. Avoid waiting and contact their team today to schedule an appointment!