Swollen gums usually respond well to a combination of better oral hygiene and simple home remedies, often improving within a week or two. The most common cause is plaque buildup along the gumline, which triggers inflammation known as gingivitis. The good news: gingivitis is reversible, and most of what you need to do starts at home.
Why Your Gums Are Swollen
Your mouth naturally hosts bacteria that form a sticky film called plaque on tooth surfaces. When plaque sits undisturbed along the gumline, it irritates the tissue and causes inflammation, redness, and swelling. Left alone for too long, plaque hardens into tartar, which you can’t remove with a toothbrush. Tartar buildup pushes bacteria deeper below the gumline, where they release toxins that worsen inflammation and can eventually destroy gum tissue and bone. That progression from gingivitis to periodontitis is what dentists are trying to prevent.
Plaque isn’t the only trigger. Several factors make gum swelling more likely:
- Hormonal changes: Pregnancy, menstruation, and menopause all raise progesterone levels, which increases blood flow to gum tissue and favors the growth of bacteria that cause infection. Pregnancy gingivitis is extremely common even in people with good oral hygiene.
- Smoking
- Diabetes
- Medications that cause dry mouth or other oral side effects
- Stress and poor nutrition
- Crooked teeth or teeth grinding, which create areas where plaque accumulates more easily
Home Remedies That Actually Help
Salt Water Rinse
A warm salt water rinse is one of the simplest and most effective things you can do. Dissolve half a teaspoon of salt in a glass of warm water, then swish gently for 30 to 60 seconds. The salt draws excess fluid out of swollen tissue, which reduces puffiness and eases discomfort. You can do this two to three times a day, especially after meals.
Diluted Hydrogen Peroxide Rinse
A hydrogen peroxide rinse can help kill bacteria and reduce inflammation. Start with the standard 3% concentration sold at drugstores and mix it with an equal part of water to bring it down to 1.5%. Swish for 30 to 60 seconds, but never longer than 90 seconds, and don’t swallow it. This isn’t something to use every day long-term, but it can be helpful for a few days when inflammation flares up.
Cold Compress
If the swelling is visible on the outside of your face or feels particularly painful, hold a cold compress or ice pack wrapped in a cloth against the area for 15 to 20 minutes. This constricts blood vessels and reduces swelling temporarily while you address the underlying cause.
Fix Your Brushing Technique
When your gums are swollen, your instinct might be to brush more gently or avoid the sore area entirely. That’s counterproductive. You need to clean right at the gumline, where plaque causes the most damage. The key is using the right technique rather than applying more force.
Angle your toothbrush bristles at about 45 degrees toward the gumline so the tips slip just slightly into the space between your gums and teeth. Use short, gentle back-and-forth strokes covering only a few millimeters at a time. This approach, sometimes called the Bass technique, is specifically designed to clear plaque from the area where gums meet teeth without irritating inflamed tissue. A soft-bristled brush is essential here. Medium or hard bristles will aggravate the swelling.
Flossing matters just as much. Plaque between teeth is invisible and unreachable by any toothbrush. If traditional floss feels too painful on swollen gums, try a water flosser or interdental brushes. The goal is consistent daily cleaning between every tooth.
Over-the-Counter Pain Relief
If swollen gums are causing real pain, ibuprofen is a good first choice because it reduces both pain and inflammation. The American Dental Association recommends combining 400 mg of ibuprofen (two standard pills) with 500 mg of acetaminophen for effective pain control. Avoid ibuprofen if you have kidney disease, bleeding problems, or take blood thinners. An antiseptic mouthwash containing chlorhexidine or cetylpyridinium chloride can also help control the bacterial load while your gums heal.
When You Need Professional Treatment
If your gums are still swollen after two weeks of consistent home care, or if the swelling keeps coming back, you likely have tartar buildup that requires professional removal. A standard dental cleaning handles tartar above the gumline. If bacteria have spread deeper, your dentist may recommend a procedure called scaling and root planing, which is essentially a deep cleaning.
During this procedure, your gums are numbed with local anesthesia. Your dentist or hygienist uses hand instruments or ultrasonic tools to remove plaque and tartar both above and below the gumline, then smooths the tooth roots so gum tissue can reattach cleanly. Your teeth might feel slightly loose afterward, but that resolves as the gums tighten back up. Once the infection clears, swollen gums shrink back to their normal size.
Signs That Need Urgent Attention
Most gum swelling is a nuisance, not an emergency. But certain symptoms point to a dental abscess or spreading infection that needs prompt care. Get an urgent dental appointment if you notice intense, throbbing pain in your gums or teeth, a bad taste in your mouth, a high temperature, swollen glands in your neck, or visible redness and swelling on your face or jaw.
Go to an emergency room if you’re having difficulty breathing, speaking, or swallowing, if your eye becomes swollen or painful, if you can’t open your mouth, or if the swelling in your mouth is severe and spreading. These signs suggest the infection may be moving into deeper tissues, which requires immediate treatment.