Recurrent gum swelling after root canal treatment?
If a dental crown develops a swelling within a year, it may indicate root inflammation.
After returning for a follow-up, if a root canal is redone and there is some improvement, but then a pus-filled bump reappears after another year, it is possible that the crown was not properly fitted, allowing bacteria to enter.
Repeated root canal treatments and debridement could increase the risk of tooth fracture.
If this situation persists, would it be better to consider microscopic root canal therapy or apicoectomy? Would the success rate be higher in those cases?
Q, 30~39 year old female. Ask Date: 2022/01/17
Dr. Lin Jiayong reply Dentistry
Hello: If repeated root canal treatments are unsuccessful, apicoectomy with retrograde filling may be a viable and preferable treatment option.
It is recommended to discuss the advantages and disadvantages of the surgery further with an endodontist.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.
Reply Date: 2022/01/17
More Info
Recurring gum swelling after a root canal treatment can be a frustrating and painful experience. It often indicates that there may be underlying issues that need to be addressed. In your case, the development of a gum swelling or abscess after receiving a crown within a year suggests that there may be an infection related to the root canal treatment or the crown itself.
When a root canal is performed, the goal is to remove infected tissue from the tooth's interior and seal it to prevent bacteria from re-entering. However, if there are any missed canals, or if the sealing material is not adequate, bacteria can persist and lead to reinfection. This could explain the recurring swelling and the formation of an abscess.
The fact that you have had to undergo multiple procedures, including cleaning and re-treatment, raises concerns about the effectiveness of the initial root canal treatment. It is possible that the crown may not have been fitted properly, allowing bacteria to infiltrate the area. Poorly fitting crowns can create micro-gaps that allow bacteria to enter, leading to further complications.
Regarding your concern about the risk of tooth fracture with repeated root canal treatments, it is important to note that each time a tooth undergoes a root canal, it becomes more brittle due to the removal of the nerve and blood supply. This can increase the likelihood of cracks or fractures, especially if the tooth is subjected to significant forces during chewing. Therefore, it is crucial to ensure that the tooth is adequately protected with a well-fitted crown after treatment.
As for whether to pursue microscopic root canal treatment or apicoectomy (root-end surgery), this decision should be made in consultation with an endodontist, a specialist in root canal therapy. Microscopic root canal treatment can provide a more thorough examination of the tooth's anatomy, potentially identifying and treating any missed canals. This method has a higher success rate for complicated cases compared to traditional methods.
On the other hand, an apicoectomy involves surgically removing the tip of the root and any infected tissue. This procedure can be effective if the infection persists despite previous treatments. The success rates for both microscopic root canal treatment and apicoectomy can be high, often exceeding 80-90%, depending on the specific circumstances of the case.
In summary, recurring gum swelling after a root canal can be attributed to various factors, including missed canals, inadequate sealing, or issues with the crown. It is essential to work closely with your dental care team to determine the best course of action, whether that involves further root canal treatment, an apicoectomy, or possibly even extraction if the tooth cannot be salvaged. Regular follow-ups and monitoring are crucial to ensure that any issues are addressed promptly to prevent further complications.
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