Micro-Endodontics: Pain and Recovery After Treatment - Dentistry

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Microscopic root canal


On Thursday, December 22, I went to Linkou X-Keng Hospital for a microscopic root canal treatment to remove a dental post from my lower right third molar (a type of metal post that has been there for a long time, which general clinics are usually hesitant to remove, hence the referral for microscopic root canal).
After a difficult removal of the post that day, the dentist performed root canal treatment using a long, thin instrument to work inside the tooth.
I was then fitted with a temporary crown.

Starting Saturday, I began to feel discomfort and pain, but the doctor did not prescribe any painkillers or antibiotics.
He mentioned that if I experienced pain, I could take over-the-counter pain medication.
However, the pain became unbearable, accompanied by numbness and slight swelling.
The pain radiated to my head and behind my ear.
When I returned on Tuesday for a follow-up, the doctor said that I currently had medication packed in the tooth, and removing it wouldn’t be meaningful.
He advised me to observe the situation and prescribed a three-day course of antibiotics and painkillers.
I also went to the pharmacy to buy additional pain medication.
The doctor instructed me to go to the emergency department of a major hospital if I noticed any swelling in my face or if I developed a fever, as it could indicate cellulitis that needed urgent treatment.
Today is December 31, and while the pain has decreased, I still feel numbness and slight swelling, along with a lingering throbbing sensation.
Is this treatment normal? I have two more microscopic root canal appointments scheduled for February.
Is this numbness, pain, and swelling a normal response?

Xiao Rong, 40~49 year old female. Ask Date: 2023/01/01

Dr. Lin Jiayong reply Dentistry


Hello: During the treatment process, the body may experience some injuries, and through repeated cycles of injury and repair, the inflamed necrotic tissue is removed.
It is recommended to return for follow-up appointments as scheduled.
If you continue to experience significant swelling, pain, or numbness, it is advisable to inform your physician to see if a referral to another specialty (such as oral surgery or neurology) is necessary.

Reply Date: 2023/01/01

More Info


Understanding the complexities of micro-endodontics and the recovery process after root canal treatment is crucial for patients experiencing prolonged pain and discomfort. Based on your description, it seems you have undergone a series of treatments, including the removal of a metal post and subsequent root canal therapy. It is not uncommon for patients to experience discomfort following such procedures, but the intensity and duration of your symptoms warrant further discussion.

Firstly, it is essential to recognize that root canal treatment involves cleaning and disinfecting the interior of the tooth, which can sometimes lead to inflammation of the surrounding tissues. This inflammation can manifest as pain, swelling, and sensitivity, particularly when biting or chewing. The fact that you experienced significant pain and swelling after your procedure indicates that your body is responding to the treatment, but it also raises concerns about the underlying condition of the tooth and surrounding structures.

The pain radiating to your head and ear suggests that the inflammation may not be localized solely to the tooth but could involve adjacent tissues, potentially indicating a more extensive inflammatory response. In some cases, if the root canal system is complex or if there are additional canals that were not adequately treated, this can lead to persistent symptoms. The presence of a temporary crown may also contribute to discomfort, especially if it does not fit well or if there is pressure on the underlying tooth structure.

Your dentist's decision to prescribe antibiotics and pain relief is standard practice when signs of infection or significant inflammation are present. However, the absence of immediate relief from pain can be frustrating. It is important to monitor your symptoms closely. If you notice any worsening of swelling, fever, or other systemic symptoms, it is crucial to seek immediate medical attention, as these could be signs of a more serious infection, such as cellulitis or abscess formation.

Regarding your upcoming appointments for further micro-endodontic treatment, it is advisable to communicate openly with your dentist about your ongoing symptoms. If the discomfort persists or worsens, it may be necessary to consider additional imaging studies, such as a cone beam computed tomography (CBCT) scan, to evaluate the root canal system more thoroughly. This imaging can help identify any missed canals or other anatomical complexities that may require specialized treatment.

In terms of recovery, it is essential to allow your body time to heal. Post-treatment discomfort can last for several days to weeks, but it should gradually improve. If you find that your symptoms are not improving or are significantly impacting your quality of life, discussing the possibility of referral to an endodontic specialist may be beneficial. These specialists have advanced training and equipment to address complex cases that may not respond to standard treatment protocols.

In conclusion, while some discomfort after root canal treatment is expected, the severity and duration of your symptoms suggest that further evaluation may be necessary. Keep an open line of communication with your dental care provider, and do not hesitate to seek a second opinion if you feel your concerns are not being adequately addressed. Your comfort and health should always be the priority in dental care.

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