Is It a Dental Abscess? Your Oral Health Concerns - Dentistry

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Is this a dental abscess?


Dear Doctor: Over the past 1-2 years, I have developed a lump on the upper gum on the left side of my mouth (near the nostril).
It doesn't hurt.
I previously had a root canal on that tooth.
I'm concerned that this tooth might be decaying further.
I visited a dental clinic, but the dentist said they couldn't see the lump and advised that treatment would only be necessary if it became painful.
I'm worried that it could lead to something serious like cellulitis, as seen in the news.
Should I go to a major hospital for a microscopic root canal procedure?

Xiao Xuan, 30~39 year old female. Ask Date: 2010/03/07

Dr. Cao Guoqing reply Dentistry


It may be an incompletely treated periapical cyst, and periapical cystectomy can be performed for treatment.

Reply Date: 2010/03/07

More Info


It sounds like you have been experiencing a range of concerning oral health issues, particularly with your gums and the presence of a lump near your upper left gums. Based on your description, it is essential to address these concerns promptly, as they could indicate underlying dental problems, including the possibility of a dental abscess.

A dental abscess is a localized collection of pus that can occur in different areas of the tooth, including the gums, tooth roots, or the surrounding bone. It typically results from a bacterial infection, often due to untreated cavities, gum disease, or trauma to the tooth. The fact that you have a lump near your gums that has been present for 1-2 years but is not painful is noteworthy. While the absence of pain might suggest that the infection is not acute, it does not rule out the possibility of an abscess or other dental issues.

Given your history of root canal treatment, it is crucial to monitor any changes in the area where the lump is located. If the tooth that underwent root canal therapy is not healing properly, it could lead to the formation of a periapical abscess, which may not always present with immediate pain but can still cause significant complications if left untreated. The risk of developing more severe infections, such as cellulitis or osteomyelitis (bone infection), increases if the infection spreads.

Your dentist's recommendation to wait until you experience pain before seeking treatment is concerning. While pain is a common symptom of dental abscesses, it is not the only indicator. Other signs to watch for include swelling, redness, a persistent bad taste in the mouth, fever, or difficulty swallowing. If you notice any of these symptoms, it is crucial to seek dental care immediately.

In your case, considering the duration of the lump and your previous dental history, it would be prudent to seek a second opinion from an oral surgeon or a specialist in endodontics (root canal therapy). They can perform a thorough examination, possibly including imaging studies like X-rays or a cone beam CT scan, to assess the situation more accurately. If an abscess is confirmed, treatment options may include drainage of the abscess, further root canal therapy, or even extraction of the affected tooth if necessary.

Additionally, maintaining good oral hygiene is vital in preventing further complications. This includes brushing twice daily with fluoride toothpaste, flossing regularly, and using an antibacterial mouthwash to reduce plaque buildup and bacteria in your mouth. Regular dental check-ups are also essential to catch any potential issues early on.

In summary, while the lump you describe may not currently be causing pain, it is essential to take it seriously, especially given your dental history. Seeking a thorough evaluation from a dental professional is the best course of action to ensure your oral health is protected and to prevent any potential complications from developing. Don't hesitate to advocate for your health and seek the care you need.

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