Swollen gum around a tooth – possible causes and treatment approach

Last updated on: 5 Aug, 2026

Swollen gums around a tooth most often appear as a sign of inflammation, infection or irritation of the gum tissue. The causes can range from a build-up of bacterial plaque and gingivitis to more serious conditions such as periodontitis, an abscess or gum trauma. 

Early recognition of symptoms and the correct treatment approach are key to preventing complications and maintaining the health of your teeth and gums.

In the following sections, we will look at the most common causes of swollen gums around a tooth, the symptoms that may accompany it, how an accurate diagnosis is made, and the treatment methods dentists use to manage the problem. We will also look at the most important preventive measures that help keep your gums and mouth healthy in the long term.

Image: freepik

The importance of gum health

Gums are much more than just the visible pink tissue around the teeth. They act as a real protective barrier, keeping the teeth stable, sealing their roots against bacteria, and forming an integral part of the complex system that safeguards oral health. When our gums are healthy, they are pale pink, firm and do not bleed when brushed.

When this protection weakens, the consequences can affect not only the teeth but also the body’s general health. Scientific research shows that gum infections can contribute to an increased risk of cardiovascular disease, diabetes and complications during pregnancy. That is why maintaining oral hygiene is not just a matter of aesthetics, but a real investment in long-term health.

Causes of swollen gums

Swollen gums around a tooth indicate a reaction in the body caused by irritation or infection. It may be an isolated problem – ranging from minor tissue damage to a sign of a more serious condition that has been developing silently for months. There are several common causes of swollen gums.

Gingivitis – the start of the problem

Gingivitis is an inflammation of the gums, usually caused by a build-up of plaque on the teeth. Plaque is a sticky layer of bacteria which, if oral hygiene is poor, turns into tartar. Gingivitis is a reversible stage – with timely treatment and improved hygiene, the gums can return to a healthy state.

Periodontitis – progression of the disease

Untreated gingivitis can progress to periodontitis, which is a more severe form of periodontal disease where the infection affects the bone and tissues surrounding the teeth. 

Periodontitis is a chronic condition that requires specialist treatment, and in severe cases can lead to tooth loss. The characteristic symptoms of periodontitis include receding gums, loose teeth and discomfort or tenderness in the gums.

Periodontal abscesses

Periodontal abscesses are localised purulent infections in the space between the tooth and the gum. They cause acute, painful swelling, redness and sometimes a fever. They require prompt dental treatment, which includes drainage of the abscess and antibiotic therapy.

Dry socket following tooth extraction

Dry socket is a complication following tooth extraction, in which the blood clot in the wound breaks down prematurely, leaving the bone unprotected by the clot and allowing bacteria to enter the alveolar bone. It causes severe pain and localised swelling, and sometimes an unpleasant odour.

Vitamin C deficiency

A lack of vitamin C weakens the collagen structures in the body, including the gum tissues. In cases of chronic deficiency, the tissues supporting the teeth become vulnerable and easily inflamed. Known in the past as scurvy, this problem is rarer today but still occurs in people with poor diets.

Hormonal changes

Hormonal changes during pregnancy, puberty, the menopause or when taking hormonal contraceptives can make the gums more sensitive and prone to reacting to plaque, even with good oral hygiene. Pregnant women are particularly prone to gingivitis.

Gum trauma

Gum trauma caused by overly aggressive brushing, the use of unsuitable cleaning products, or injury from food can cause localised swelling and sensitivity. This cause is usually easier to identify because the symptoms appear immediately after the trauma.

Each of these causes may require a different approach, so self-treatment is not a good solution. A visit to a specialist is key to an accurate diagnosis and effective treatment.

Symptoms of a swollen gum

Recognising the symptoms  can prevent the problem from getting worse. It is important to know what to look out for so that you do not miss the early stages of the condition.

Characteristic signs:

• Sore gums when touched or when brushing your teeth.
• Bleeding gums when using a toothbrush or dental floss.
• Visible redness and swelling of the gum tissue around the tooth.
• Gum sensitivity to hot, cold or pressure.
• Bad breath, even with regular oral hygiene.
• Receding gums.
• Looseness of the tooth in more advanced stages.
• Pus or a visible blister around the base of the tooth.

If you notice one or more of these symptoms, do not delay visiting the dentist. Early treatment is quicker, cheaper and more effective than waiting for complications to arise.ещението при зъболекар. Ранното лечение е по-бързо, по-евтино и по-ефективно, отколкото появата на усложнения.

Image: freepik

Diagnosis of the problem

When diagnosing swollen gums, dentists use a comprehensive approach: visual examination, measurement of periodontal pockets (the spaces between the tooth and the gum) with a special periodontal probe, X-rays and others.

What are the methods for treating swollen gums?

Treatment depends entirely on the cause and stage of the condition. Whilst in mild cases it is sufficient to improve oral hygiene habits and have one or two preventive check-ups, more severe forms require specialised procedures. Depending on the specific case, different approaches may be applied.

Treatment of gingivitis

Treatment for gingivitis usually begins with a professional dental cleaning, during which accumulated tartar and plaque are removed above and below the gum line. The dentist may recommend specific antiseptic mouthwashes and, if necessary, antibiotics in the presence of an active bacterial infection.

Treatment of periodontitis

The treatment of periodontitis is more complex and involves deep cleaning of the periodontal pockets. In advanced cases, surgical intervention may be necessary for bone regeneration. The aim is not only to stop the infection, but also to preserve the teeth and prevent recurrence.

Treatment for an abscess

In the presence of an abscess, treatment involves incision and drainage, followed by antibiotic therapy. Antibiotics are administered only on prescription and should not be taken arbitrarily, as the wrong choice may worsen the situation.

Treatment for dry socket

In the case of a dry socket following a tooth extraction, the dentist cleans the wound and applies a special dressing that protects the bone and relieves pain. The situation requires a prompt visit to a specialist, as the pain is usually severe.

Whatever the cause, do not rely on self-treatment. If you have swollen gums, this is a warning sign, not a cosmetic problem. Timely dental care is crucial for the long-term outcome.

Prevention of swollen gums

Good gum care involves maintaining oral hygiene by brushing your teeth regularly. Remember that a toothbrush only reaches part of the tooth surfaces, so daily flossing complements the routine.

Image: freepik

Recommendations for a healthy diet with sufficient vitamins and minerals (especially vitamin C and calcium) help maintain the health of soft tissues. Smoking has a negative effect on the gums. Nicotine constricts blood vessels and suppresses the immune response, making the gums more vulnerable and harder to treat. 

Regular visits to the dentist every six months allow for the early detection of problems before they have progressed. Good oral hygiene means not only brushing your teeth, but also caring for your tongue, gums and the entire oral mucosa, as this is the only way to ensure lasting protection.

What is the link between gums and general health?

Modern medicine has long established that the oral cavity is not isolated from the rest of the body. Chronic inflammation in the periodontium can worsen blood sugar control in diabetics, affect heart health and even be linked to premature birth. This makes gum care a matter of overall health, not just dental aesthetics.

Conclusion

Swollen gums around a tooth are not something to be ignored. Whether it is a symptom of early gingivitis or more advanced periodontal disease, timely diagnosis and treatment are key to preserving your teeth and your overall health. Don’t wait until the pain becomes unbearable. Keep your gums healthy and your smile confident.

Frequently asked questions

Can a swollen gum go away on its own?

In rare cases of minor trauma or temporary irritation, this is possible, but with infections and periodontal disease, the problem usually worsens without treatment.

Can hormonal changes cause gum swelling?

Yes, during pregnancy or when taking hormonal medication, the gums become more reactive to plaque and more prone to inflammation.

Do antibiotics help with every case of swollen gums?

No, antibiotics are only effective for bacterial infections and must be prescribed by a doctor. Self-medicating with antibiotics is dangerous and can lead to complications.