Tooth Pain After Root Canal Treatment: What to Expect - Dentistry

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Post-root canal treatment tooth pain?


Hello Doctor: Two days ago, I visited the dentist and was informed that my first molar requires root canal treatment.
However, due to its location being far back, only two of the roots were cleaned.
To address the other two roots, a microscope treatment is necessary.
After cleaning the two roots, they were filled, but for the past few days, I have been experiencing a dull ache in the tooth, with intermittent sharp pain, occasionally resembling nerve pain with intense discomfort.
Pain relievers have not been very effective.
I would like to ask the doctor if this condition can only heal after the microscopic treatment, or if the pain is not significantly related to the two untreated roots?

Yu, 20~29 year old female. Ask Date: 2022/11/24

Dr. Lin Jiayong reply Dentistry


Hello: If the root canal treatment has not yet been completed, experiencing pain is normal.
It is recommended to continue attending follow-up appointments to treat the remaining two root canals.

Reply Date: 2022/11/24

More Info


Tooth pain after a root canal treatment can be a distressing experience, and understanding the underlying causes and what to expect can help alleviate some anxiety. Based on your description, it seems that you have undergone a partial root canal treatment on your first molar, addressing only two of the four roots. This situation can lead to ongoing discomfort for several reasons.

Firstly, it is important to recognize that root canal treatment aims to remove infected or inflamed pulp tissue from the tooth's interior, followed by cleaning and sealing the root canals. When only part of the treatment is completed, as in your case, the remaining untreated roots can still harbor bacteria, leading to persistent pain. The pain you are experiencing, described as a "throbbing" or "sharp" sensation, could be indicative of inflammation or infection in the untreated roots.
Moreover, the complexity of molar teeth, which often have multiple roots and intricate canal systems, can make it challenging for dentists to completely clean and disinfect all areas. If the remaining two roots are not treated, they may continue to cause pain and discomfort, as they can still be a source of infection. This is particularly true if there are additional canals or branches that were not identified during the initial treatment.
The use of a microscope during root canal therapy can significantly enhance the dentist's ability to visualize and treat these complex canal systems. If your dentist has recommended this approach, it is likely because they suspect that the untreated roots may be contributing to your ongoing pain.
In terms of pain management, it is not uncommon for patients to experience discomfort after a root canal, especially if the treatment was incomplete. Over-the-counter pain relievers may not always be effective, particularly if there is an underlying infection. It is crucial to follow your dentist's advice and return for the recommended follow-up treatment.
If your pain persists despite taking prescribed medications, it may indicate that the infection has not been adequately addressed. In such cases, your dentist may consider additional interventions, such as re-evaluating the root canals, performing a retreatment, or even considering surgical options if necessary.

In summary, the pain you are experiencing is likely related to the incomplete treatment of your tooth. It is essential to follow up with your dentist for further evaluation and treatment of the remaining roots. Early intervention can help prevent further complications and alleviate your discomfort. Remember, effective communication with your dental care provider is key to addressing your concerns and ensuring a successful outcome.

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