Post-Root Canal Pain and Temporary Crown Issues - Dentistry

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After completing a root canal treatment and having a dental crown placed?


Hello, doctor.
I had a root canal treatment at the first clinic, but I continued to experience soreness and pain afterward.
Later, I went to a second clinic where the doctor said the previous root canal was not done thoroughly, leading to inflammation inside the tooth root.
I underwent a second root canal treatment.
After the procedure, I had a temporary crown placed, and I experienced some gum pain, which resolved after a few weeks.
Once I recovered, I had a full porcelain crown made.
After it was completed, I noticed a slight pain in the gums when tapping the crown with my finger, and my cheek has been persistently sore—sometimes severe, sometimes not noticeable.
I've been searching for the cause for a long time.
Could this be due to the prolonged opening of my mouth during treatment causing issues with the facial nerve, or is it possible that the crown is putting pressure on the gums, causing discomfort? I would like to know what further examinations or treatments could help alleviate the pain.

9, 20~29 year old female. Ask Date: 2022/06/22

Dr. Lin Jiayong reply Dentistry


Hello: Continuous treatment for keeping the mouth open may lead to facial nerve issues, which might require further examination by a neurologist for confirmation.
If dentures are exerting pressure on the gums, the initial signs include recurrent redness, swelling, inflammation, and bleeding of the gums.
It is advisable to first return to the dentist who provided the dentures for further evaluation.
Thank you! Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2022/06/22

More Info


Post-root canal pain and issues with temporary crowns can be quite distressing, and it's essential to understand the underlying causes and potential solutions. Based on your description, it seems that you have undergone multiple treatments, including root canal therapy and the placement of a temporary crown, followed by a permanent all-ceramic crown. Despite these interventions, you are still experiencing discomfort, which can be attributed to several factors.

Firstly, it is not uncommon for patients to experience some level of discomfort following root canal treatment. This discomfort can arise from inflammation in the surrounding tissues, which may persist even after the nerve has been removed. If the initial root canal treatment was not thorough, as indicated by your second dentist, residual infection or inflammation could remain, leading to ongoing pain. This situation can necessitate further treatment, such as a second root canal procedure or additional interventions to address any remaining infection.

The pain you are experiencing after the placement of the all-ceramic crown could be due to several reasons. One possibility is that the crown is not fitting properly, which can lead to pressure on the surrounding gums and teeth. If the crown is too high or misaligned, it can create an uneven bite, causing discomfort when you chew or even when you touch the area with your finger. A dental professional can assess the crown's fit and make necessary adjustments to alleviate this discomfort.

Another potential cause of your symptoms could be related to the temporary crown. Temporary crowns are often not as stable or well-fitted as permanent crowns, and they can sometimes irritate the gums or adjacent teeth. If the temporary crown was in place for an extended period, it might have contributed to gum inflammation or sensitivity.

Regarding your concern about facial pain and the possibility of nerve involvement, it is indeed possible that prolonged dental procedures, especially if the mouth is held open for an extended period, can lead to muscle strain or nerve irritation. This can manifest as discomfort in the jaw, face, or even headaches. If this is suspected, discussing your symptoms with your dentist may lead to recommendations for muscle relaxation techniques or physical therapy.

To address your ongoing pain, consider the following steps:
1. Follow-Up Appointment: Schedule a follow-up appointment with your dentist to discuss your symptoms in detail. They may recommend imaging studies, such as X-rays, to check for any underlying issues that may not be visible during a clinical examination.

2. Crown Adjustment: If the crown is suspected to be the source of your discomfort, your dentist can adjust its height or fit to ensure it does not cause undue pressure on your gums or adjacent teeth.

3. Pain Management: Over-the-counter pain relievers may help manage your discomfort in the short term. However, it is crucial to consult your dentist before taking any medication, especially if you have underlying health conditions or are taking other medications.

4. Consider a Specialist: If your symptoms persist despite these measures, it may be beneficial to consult an endodontist (a specialist in root canal treatment) or an oral surgeon for a more in-depth evaluation. They can provide insights into whether further treatment is necessary.

5. Monitor Symptoms: Keep track of your symptoms, noting any changes in intensity or frequency. This information can be valuable for your dentist in determining the best course of action.

In conclusion, while post-root canal pain and discomfort following crown placement can be frustrating, there are several avenues to explore for relief. Open communication with your dental care provider is key to identifying the cause of your pain and finding an effective solution.

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