Tooth Root Resorption: Causes, Symptoms, and Treatment Options

Root resorption

I would like to ask the doctor, I previously injured my front tooth while playing basketball, which led to nerve necrosis, so I opted for root canal treatment.
However, I did not get a crown placed after the root canal, and that was five years ago.
Three years ago, the area near the gum of that front tooth started to turn brown.
I thought it was due to drinking too much tea and coffee.
When I went back to see the dentist, they didn't say much about it.
Recently, I started experiencing some unusual sensitivity and a soft feeling in that front tooth, so I switched to a different clinic.
They informed me that there is some root resorption, and tapping on the tooth does not cause significant pain, so they suggested monitoring it.
The doctor also performed a dental cleaning, but five days later, I still feel the sensitivity and soft feeling has not disappeared.
Doctor, what would be the best course of action for me? Thank you for your help! ^ ^

You, 20~29 year old female. Ask Date: 2018/10/03

Dr. Huang Tingfang reply Dentistry

Dear Mr.
Ni,
Hello! For root resorption, it is still necessary to take X-rays (to determine whether to retain or remove the tooth).
If the root length is sufficient, it can be reused.
Please communicate more with your dentist! Thank you! Wishing you safety!
Sincerely,
Dr.
Huang Ting-Fang, Dentistry

Reply Date: 2018/10/03

More Info

Tooth root resorption is a condition where the body begins to break down and absorb the structure of the tooth root. This can occur for various reasons, including trauma, infection, or even as a response to orthodontic treatment. In your case, it seems that the initial trauma from playing sports led to nerve damage and subsequent root canal treatment. The discoloration and sensitivity you are experiencing now may be related to the resorption process.

Causes of Tooth Root Resorption
1. Trauma: As you mentioned, the initial injury to your tooth can trigger a response that leads to resorption. When the tooth is damaged, the body may perceive it as a foreign object, leading to inflammation and resorption of the root structure.

2. Infection: If bacteria invade the pulp or surrounding tissues, this can lead to inflammation and resorption. Even after a root canal, if the infection is not fully resolved, it can continue to affect the tooth.

3. Orthodontic Treatment: In some cases, the forces applied during orthodontic treatment can lead to resorption, especially if the teeth are moved too quickly.

4. Chronic Inflammation: Conditions that cause chronic inflammation in the gums or surrounding tissues can also lead to resorption.

Symptoms of Tooth Root Resorption
- Discoloration: As you noted, the tooth may change color, often becoming darker. This can be due to the breakdown of the tooth structure or the pulp tissue.

- Sensitivity: You may experience sensitivity to temperature changes or pressure, as you described with the "acidic" feeling.

- Mobility: In advanced cases, the tooth may become loose due to the loss of supporting bone and root structure.

- Pain: While you mentioned that tapping on the tooth does not cause significant pain, discomfort can still be present, especially when biting or chewing.

Treatment Options
1. Observation: In cases where resorption is mild and the tooth is stable, your dentist may recommend monitoring the situation. Regular check-ups and X-rays can help track any changes.

2. Root Canal Treatment: If there is an active infection or if the resorption is affecting the pulp, retreatment of the root canal may be necessary to remove any remaining infected tissue.

3. Crown Placement: If you have not yet placed a crown on your tooth, doing so can help protect it from further damage and may alleviate some sensitivity.

4. Surgical Intervention: In cases of severe resorption, surgical options may be considered. This could involve removing the affected root or even extracting the tooth if it is deemed non-restorable.

5. Endodontic Surgery: If the resorption is localized, your dentist may suggest an apicoectomy, where the tip of the root is removed, and the area is sealed.

Recommendations
Given your ongoing symptoms, it is crucial to maintain open communication with your dentist. If the sensitivity persists, consider scheduling a follow-up appointment to discuss your concerns in detail. It may also be beneficial to seek a second opinion from an endodontist, a specialist in root canal treatments, who can provide a more thorough evaluation of your tooth's condition.

In the meantime, practicing good oral hygiene, avoiding hard or sticky foods, and using a soft-bristled toothbrush can help minimize discomfort. If the sensitivity worsens or if you experience any swelling or increased pain, seek immediate dental care.

In summary, tooth root resorption can be a complex issue that requires careful monitoring and potentially various treatment approaches. Your proactive approach in seeking help is commendable, and with the right care, you can manage your symptoms effectively.

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