Post-Root Canal Pain: What to Expect and Do - Dentistry

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Root canal treatment


Hello, doctor.
After my first root canal treatment, the pain has been increasing.
Is this normal? I woke up in the middle of the night due to the pain.
It has been three days since the treatment, and last night while having dinner, the pain intensified.
I also heard a popping sound while sleeping, which might have been caused by my mouth closing while I was asleep.
I haven't bitten anything hard, and I've been chewing on the other side of my mouth.
Could it be that using only one side is causing more pressure when I open and close my mouth? What can I do for myself on a Sunday when the clinic is closed?

Helen, 20~29 year old female. Ask Date: 2022/05/01

Dr. Lin Jiayong reply Dentistry


Hello, if the pain is truly unbearable, it is advisable to seek medical attention as soon as possible.
The emergency room can assist in providing medication for pain relief, among other things.
If you are still concerned about other issues, a CT scan of the head and neck can be performed for confirmation.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2022/05/01

More Info


Experiencing pain after a root canal treatment can be a concerning and uncomfortable situation. It is important to understand that some level of discomfort or pain can be expected following the procedure, but the intensity and duration of that pain can vary significantly from person to person.
Firstly, it is essential to recognize that root canal treatment involves the cleaning and shaping of the root canals, which can cause inflammation in the surrounding tissues. This inflammation can lead to pain, especially in the first few days after the procedure. The pain you are experiencing, particularly if it is severe enough to wake you from sleep, may indicate that there is still some inflammation or irritation present.
In your case, since it is the third day post-treatment and you are experiencing increased pain, it is advisable to consider a few factors. The pain could be due to several reasons, including:
1. Inflammation: After a root canal, the tissues around the tooth may become inflamed. This inflammation can cause pain, especially when pressure is applied to the tooth, such as when chewing or biting.

2. Infection: If there was an existing infection before the root canal, it might take some time for the inflammation to subside, or there may be residual infection that needs to be addressed.

3. Bite Issues: If you are unconsciously putting more pressure on one side of your mouth while chewing, it could lead to discomfort. The "click" sound you heard while sleeping could indicate that your jaw was under stress, which might exacerbate the pain.

4. Nerve Sensitivity: Sometimes, the nerves in the area can remain sensitive for a while after treatment, leading to discomfort.

Given that your dental office is closed on Sundays, here are some steps you can take to manage your pain until you can see your dentist:
- Pain Relief: Continue taking over-the-counter pain relievers as directed. Nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen can help reduce inflammation and alleviate pain. Be sure to follow the recommended dosage and consider taking them with food to minimize stomach irritation.

- Cold Compress: Applying a cold compress to the outside of your cheek near the painful area can help reduce swelling and numb the pain. Use the compress for 15-20 minutes at a time.

- Soft Diet: Stick to soft foods that require minimal chewing. Avoid hard, crunchy, or sticky foods that could aggravate the pain.

- Avoid Pressure: Try to avoid using the affected side of your mouth for chewing. If you notice that you are unconsciously clenching your jaw or grinding your teeth, try to relax your jaw muscles.

- Salt Water Rinse: Rinsing your mouth gently with warm salt water can help soothe the gums and reduce inflammation.

If the pain persists or worsens, or if you notice any signs of infection such as swelling, fever, or discharge, it is crucial to seek dental care as soon as possible. Your dentist may need to evaluate the situation further, possibly taking X-rays to check for any complications or residual infection.

In summary, while some pain after a root canal is normal, significant or worsening pain should not be ignored. Managing your symptoms at home can help, but do not hesitate to reach out to your dentist for further evaluation and treatment. Your oral health is important, and addressing any issues promptly can lead to a better recovery.

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