Why are my gums swollen and painful?
Swollen, painful gums are most often caused by inflammation due to plaque build-up; less often the cause is an abscess, hormonal changes or medications. Urgent cases of gum pain are seen at the clinic the same day, during opening hours.
What you can do until your appointment
Brushing: keep brushing with a soft brush and gentle strokes, even if your gums bleed.
Floss: clean gently between the teeth and remove any trapped food.
Don't squeeze: do not press on the swelling or try to drain it, and do not make home rinses or irrigate the area yourself.
Pain: ask your dentist or pharmacist which pain reliever suits you.
Get checked: book a dental visit; fever, swelling spreading toward the eye or neck, or difficulty swallowing or breathing require going to the emergency room immediately.
What counts as swollen gums?
Swollen gums are enlarged and red, sometimes with bleeding, tenderness or discomfort. Gum swelling is a clear sign of inflammation in the gum tissue and needs a professional assessment. It is important to tell temporary swelling from a chronic problem: brief swelling can come from mechanical injury, such as brushing too hard or flossing incorrectly, whereas persistent swelling usually points to deeper inflammation.
Sometimes white gums appear together with swelling, which may point to a fungal infection or another condition that needs an accurate diagnosis. In its early stage, gum inflammation (gingivitis) causes swelling and redness without loss of the tissues that support the tooth.
Other symptoms that may come with painful gums include bad breath, a bad taste in the mouth, gum recession and loose teeth. Even without pain, swollen gums can signal significant inflammation.
What causes swollen gums?
The most common cause of swollen gums is bacterial plaque building up on the teeth and gums. When plaque is not removed by brushing and cleaning between the teeth, its bacteria trigger inflammation of the gum. Untreated, this inflammation can develop into gum disease that threatens the teeth and even general health. A careful diagnosis identifies the exact source of the inflammation.
| Cause | Typical sign | What to do |
|---|---|---|
| Plaque (gingivitis) | Red, swollen gums that bleed when brushing, usually around several teeth | Gentle brushing, flossing and a professional cleaning |
| Trapped food or inflammation around a wisdom tooth | Swelling between two teeth, or in the gum partly covering a wisdom tooth, sometimes with difficulty opening the mouth | Gentle flossing; around a wisdom tooth: an examination, with rinsing done at the clinic only |
| Abscess | Local swelling with pus or throbbing pain, sometimes with fever | A prompt examination and drainage at the clinic; fever or spreading swelling: emergency room |
| Hormonal changes | More swelling and bleeding in pregnancy, puberty or around periods | Careful hygiene and a check-up; dental care is safe during pregnancy too |
| Medications | Gradual enlargement of the gum tissue | A dental examination; never stop a medication without your physician |
| An ill-fitting denture, bridge or guard | Swelling or a sore where the appliance presses or rubs | Adjustment by the dentist |
Mouth infections and pus in the gums
A mouth infection can follow a viral or fungal infection or an autoimmune condition. Some patients develop pus in the gums, with a collection of pus and marked swelling. This needs prompt treatment to stop the infection from spreading. Teething, injury to the gum or incorrect use of a toothbrush can also cause temporary swelling.
Hormones and medications
Hormones play a significant role: pregnancy, puberty and the menstrual cycle can increase gum swelling. Some medications, such as calcium channel blockers, anti-seizure medications and immunosuppressants, can cause the gum tissue to enlarge (gingival overgrowth). In these cases, a dental examination and, if needed, tailored gum treatment are recommended; never stop or change a medication without talking to your physician.
Risk factors for gum swelling
Several risk factors significantly increase the chance of gum problems, including poor oral hygiene, smoking, uncontrolled diabetes and genetics.
According to the NIDCR, smoking is the most significant risk factor for gum disease, because it weakens the immune system and reduces the tissues' ability to heal.
According to a review published in Diabetologia, people with diabetes are about three times more susceptible to periodontitis, and the disease is more severe when blood sugar is poorly controlled. Medications that change the gum tissue, mentioned above, are another risk factor.
Gum disease has also been associated with cardiovascular disease and, in pregnancy, with complications such as preterm birth, although according to the ADA a causal link has not been proven (see pregnancy gingivitis). This is one more reason for regular dental visits, which include a gum examination, professional tartar removal and home-care advice.
Examination, treatment plan and price quote
detailed and personalized
During the consultation, Dr Haim Aseriel examines your teeth, explains all the options and gives you a transparent price quote, with no obligation. The clinic is at 12 HaTnufa Street, Jerusalem.
How to treat swollen, painful gums
Gentle cleaning and mouthwash
In the early stages, swollen gums can be managed by brushing with a soft toothbrush, flossing and gently cleaning between the teeth, and, if your dentist recommends it, an antiseptic mouthwash (such as chlorhexidine).
Scaling and root planing
In more severe cases, scaling and root planing is needed to remove tartar below the gum line and smooth the root surfaces. It is done under local anesthesia and reduces inflammation and swelling. Significant gum pain is a sign of more advanced inflammation that can lead to bone loss and chronic gum disease if it is not treated.
Infection: drainage first
Sometimes gum pain signals an infection, such as an abscess. The main treatment is local (draining the infection and cleaning the area). Antibiotics are considered mainly when there are general signs such as fever, and only when a dentist or doctor prescribes them. For pain relief, ask your dentist or pharmacist which medication and dose suit you.
How to prevent swollen gums from coming back
Preventing gum inflammation from returning starts with a careful daily routine.
01
Brushing and flossing
Brushing twice a day and cleaning between the teeth daily are the key to preventing swollen gums from coming back. A powered toothbrush can help: according to a Cochrane review, it reduced plaque by 11% and gum inflammation by 6% more than a manual brush in the short term, although the clinical importance of the difference is unclear.
02
Diet and no smoking
A balanced diet rich in vitamins and minerals, particularly vitamin C and calcium, supports gum health, and cutting down on sugar helps too. Avoiding tobacco is crucial, because smoking reduces blood flow to the gums and the body's natural ability to heal.
03
Regular check-ups
Regular visits to the dentist and dental hygienist remove tartar that brushing cannot; how often depends on your personal risk, and for many people it is every six months. Areas with crowns, bridges or implants need extra attention, as they can trap plaque.
Treating gum disease behind gum pain
Treatment of gum inflammation always starts with a professional cleaning and removal of irritants. For gum pain caused by early inflammation (gingivitis), a professional cleaning and better oral hygiene usually bring significant relief. More advanced gum disease (periodontitis) needs deeper treatment, including scaling and root planing and cleaning of the gum pockets.
When pockets are deep, gum surgery may be needed to remove diseased tissue and reduce the pockets. As for laser treatment added to scaling and root planing, the ADA guideline notes that the evidence of benefit is still uncertain. When significant gum tissue has been lost, a gum graft can be considered to improve appearance and function.
When the gum pain actually comes from the nerve of a tooth, root canal treatment may be needed to remove the infected tissue from the root canals and stop the infection from spreading. The approach is always tailored to your general health, your personal risk factors and how far the disease has progressed.
When to see a dentist about gum swelling
If your gums are swollen, do not put off treatment: seeing a dentist early can prevent complications. A fever, swelling spreading toward the eye or neck, or difficulty swallowing or breathing require going to the emergency room immediately.
Swollen gums: consultation in Jerusalem. The team led by Dr Haim Aseriel examines your gums, explains the cause in English and gives you a personal treatment plan with a written estimate. The clinic is at 12 HaTnufa Street in Talpiot, south Jerusalem; opening hours: Sun 8:00–19:00 · Mon 9:00–19:00 · Tue–Wed 9:00–21:00 · Thu 8:30–21:00 · Fri 8:00–14:00.
Swollen gums: frequently asked questions
Swollen gums are enlarged and red, sometimes with bleeding, tenderness to the touch or discomfort. Swelling of the gums is a clear sign of inflammation in the gum tissue and needs a professional assessment.
The most common cause of swollen gums is bacterial plaque building up on the teeth and gums. When plaque is not removed by brushing and cleaning between the teeth, its bacteria trigger inflammation of the gum. Teething, hormonal changes, some medications, injury to the gum and aggressive brushing can also cause swelling.
Early on, swollen gums are treated with gentle brushing twice a day using a soft toothbrush, daily flossing and, if your dentist recommends it, an antiseptic mouthwash such as chlorhexidine. When tartar has built up below the gum line, a professional cleaning and sometimes scaling and root planing are needed.
Swollen gums with a fever, swelling spreading toward the eye or neck, or difficulty swallowing or breathing require going to the emergency room immediately. Swelling with pus or throbbing pain needs a prompt dental visit, because it may indicate an abscess; antibiotics are used only when a dentist or doctor prescribes them.
Preventing swollen gums from coming back relies on brushing twice a day, cleaning between the teeth daily, not smoking and regular visits to the dentist and hygienist. Check-up frequency depends on personal risk: for many people it is every six months.
Sources
- National Institute of Dental and Craniofacial Research, Periodontal (Gum) Disease – View the page
- Preshaw PM et al., Diabetologia, 2012 – View the study
- Yaacob M et al., Cochrane Database of Systematic Reviews, 2014 – View the study
- Smiley CJ et al., Journal of the American Dental Association, 2015 – View the study
- Lockhart PB et al., Journal of the American Dental Association, 2019 – View the study
- American Dental Association, Pregnancy (Oral Health Topics), 2025 – View the page
- Fee PA et al., Cochrane Database of Systematic Reviews, 2020 – View the study
