Persistent Tooth Pain After Root Canal Treatment: What to Do? - Dentistry

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Post-endodontic tooth pain


Doctor, I had a root canal treatment and the day after, my tooth still hurts.
I went to see the dentist, and he mentioned that the medication might have been placed too deeply.
He then re-treated the tooth with medication, but even today, that tooth still hurts whenever I touch it.
What should I do?

zero zero, 10~19 year old female. Ask Date: 2016/01/08

Dr. Huang Zhicheng reply Dentistry


Hello, during the process of root canal treatment, the periodontal membrane outside the root apex may experience localized temporary inflammation, which can cause pain when biting or touching.
After a few sessions of medication change, this should alleviate.
Wishing you peace and health.
Sincerely, Dr.
Huang Chih-Cheng, Director of Dentistry, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2016/01/08

More Info


Persistent tooth pain after root canal treatment can be a frustrating and concerning issue. It’s important to understand that some discomfort is normal following the procedure, but if the pain is severe or continues for an extended period, it may indicate underlying problems that need to be addressed.

Firstly, it’s essential to recognize that root canal treatment involves cleaning and disinfecting the inside of the tooth, which can sometimes lead to inflammation of the surrounding tissues. This inflammation can cause pain, especially if the treatment was complicated by factors such as a complex root canal system or the presence of infection. In your case, the dentist mentioned that the medication may have been placed too deeply, which could also contribute to discomfort.

Here are some steps you can take to manage your persistent tooth pain:
1. Follow-Up with Your Dentist: Since you have already seen your dentist, it’s crucial to maintain open communication. If the pain persists, return to your dentist for a re-evaluation. They may need to take additional X-rays or perform a clinical examination to determine if there are any complications, such as a missed canal or an underlying infection.

2. Pain Management: Over-the-counter pain relievers such as ibuprofen or acetaminophen can help manage pain. However, if the pain is severe and not responding to these medications, your dentist may prescribe stronger pain relief or anti-inflammatory medications.

3. Consider Additional Treatment: If your dentist suspects that the pain is due to an incomplete root canal treatment, they may recommend retreatment. This involves reopening the tooth, cleaning out the canals again, and ensuring that all infected tissue is removed. In some cases, a referral to an endodontist (a specialist in root canal treatments) may be necessary for more complex cases.

4. Evaluate for Other Issues: Sometimes, pain after a root canal can be related to issues unrelated to the procedure itself. For example, if you are experiencing pain when biting down, it could indicate a problem with your bite alignment or even a cracked tooth. Your dentist can assess these possibilities and recommend appropriate treatment.

5. Monitor Symptoms: Keep track of your symptoms, including when the pain occurs, its intensity, and any other associated symptoms (like swelling or fever). This information can be valuable for your dentist in diagnosing the issue.

6. Avoid Hard Foods: Until the pain is resolved, avoid chewing on the affected side and steer clear of hard or crunchy foods that could exacerbate the discomfort.

7. Consider a Second Opinion: If you feel that your concerns are not being adequately addressed, seeking a second opinion from another dental professional can provide additional insights and treatment options.

In summary, while some discomfort after a root canal is expected, persistent pain warrants further investigation. It’s crucial to work closely with your dental care provider to identify the cause of the pain and determine the best course of action. Remember, your comfort and health are the top priorities, and there are various treatment options available to help alleviate your symptoms.

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