Swollen gums usually respond to a combination of better oral hygiene and simple home treatments within a few days. If the swelling hasn’t improved after a week, that’s your signal to see a dentist. Most gum swelling is driven by bacterial buildup along and below the gumline, which triggers your immune system to flood the area with inflammatory cells. The good news: you can interrupt that cycle at home in most cases.
Why Gums Swell in the First Place
Gum swelling starts when bacteria on your teeth and along the gumline multiply beyond what your body considers normal. This imbalance, called dysbiosis, shifts the bacterial community toward species that irritate the tissue. Your immune system responds by sending white blood cells to the area and releasing inflammatory signals, which causes the redness, puffiness, and tenderness you feel. That’s gingivitis, the earliest and most reversible stage of gum disease.
If the inflammation continues unchecked, it can progress to periodontitis, where the tissue and bone supporting your teeth start to break down. At that point, you may notice gum pockets, receding gums, or loose teeth. But at the swelling stage, you’re almost always still in reversible territory.
Saltwater Rinses
A warm saltwater rinse is the simplest and most effective first step. Salt draws fluid out of swollen tissue through osmosis and creates an environment that’s harder for bacteria to thrive in. Dissolve about half a teaspoon of salt in eight ounces of warm water, swish gently for 30 seconds, and spit. Repeat two to three times a day. Research on saline concentrations shows that even a mild homemade solution has antibacterial effects lasting about three hours, so spacing your rinses throughout the day keeps that benefit active.
Compresses for Pain and Swelling
If the swelling is causing visible puffiness on your cheek or jaw, alternating warm and cold compresses can help. For a warm compress, dip a clean cloth in hot (not scalding) water, wring it out, and press it against the outside of your face over the sore area. This increases blood flow and helps your body clear the inflammation. For a cold compress, wrap an ice pack in a cloth and hold it against the same area. Cold numbs the pain and constricts blood vessels to reduce swelling. Try 15 minutes on, 15 minutes off, alternating between warm and cold.
Improve Your Brushing and Flossing
Swollen gums often mean plaque has built up in areas your current routine is missing. Switch to a soft-bristled toothbrush if you haven’t already, since medium or hard bristles can further irritate inflamed tissue. Brush for a full two minutes, angling the bristles toward the gumline at about 45 degrees so they sweep under the gum margin where bacteria hide.
Flossing matters more than most people realize. The spaces between your teeth are where plaque accumulates fastest, and a toothbrush simply can’t reach there. If traditional floss is painful on swollen gums, try a water flosser or interdental brushes, which are gentler on tender tissue while still clearing debris. Be consistent for several days before judging results. Your gums may bleed a bit at first, but that typically decreases as the inflammation subsides.
Antiseptic Mouthwash
Over-the-counter mouthwashes containing chlorhexidine are the most studied option for reducing gum inflammation. They work by killing the bacteria driving the immune response. Chlorhexidine rinses come in concentrations ranging from 0.06% to 0.2%, and the standard effective dose is about 15 mL of a 0.12% rinse used twice daily. One important limitation: using chlorhexidine for more than four weeks causes noticeable tooth staining, so it’s best treated as a short-term tool while you get the swelling under control, not a permanent addition to your routine. Hydrogen peroxide rinses (diluted to 3% or less) are another option, though they’re less well-studied.
Causes You Might Not Expect
Hormonal Changes
Pregnancy is one of the most common non-bacterial triggers for swollen gums. Rising estrogen and progesterone levels increase blood flow to gum tissue and change how your body reacts to plaque, making the same amount of buildup far more irritating than it would be otherwise. Up to 75% of pregnant women experience some degree of gum inflammation. The management is the same: consistent brushing, flossing, and a professional dental cleaning during pregnancy, which is considered safe throughout all trimesters.
Vitamin C Deficiency
Vitamin C is essential for producing and maintaining collagen, the structural protein that keeps your gums firm and resilient. When levels drop too low, gums become fragile, swollen, and prone to bleeding. You don’t need to have full-blown scurvy for this to matter. Normal blood levels of vitamin C range from roughly 5.5 to 17 micrograms per milliliter, and gum problems have been documented in people whose levels sit just below that range. If your diet is low in fruits and vegetables, a vitamin C supplement or simply adding citrus, bell peppers, or strawberries can make a noticeable difference over a few weeks.
Medications
Certain prescription drugs cause gum overgrowth as a side effect. The three main categories are anti-seizure medications (especially phenytoin, which causes gum enlargement in roughly half of patients), immunosuppressants used after organ transplants (cyclosporine affects about 30% of users), and blood pressure medications in the calcium channel blocker class (nifedipine and amlodipine, affecting about 20% of users). If you started one of these medications before your gums began swelling, that connection is worth raising with your doctor. Switching to a different drug in the same class often resolves the issue.
When Home Remedies Aren’t Enough
If you’ve been consistent with saltwater rinses, better brushing, and flossing for a week and the swelling hasn’t budged, you likely need a professional cleaning. A dentist or hygienist can perform scaling and root planing, which is essentially a deep cleaning that removes hardened plaque (tarite) from below the gumline where your toothbrush can’t reach. After the procedure, your gums will gradually tighten back up around your teeth as the infection clears. Teeth sometimes feel slightly loose for a short period afterward, but this resolves as the tissue heals.
Signs of Something More Serious
Most gum swelling is a nuisance, not an emergency. But certain symptoms suggest a dental abscess or spreading infection that needs prompt attention. Watch for severe, constant, throbbing pain that radiates to your jaw, neck, or ear. A fever alongside gum swelling means infection may be spreading beyond the local area. Swelling in your face or neck that makes it hard to breathe or swallow is a reason to go to an emergency room, not wait for a dental appointment. Other warning signs include swollen lymph nodes under your jaw, pus draining from the gums, or a sudden burst of foul-tasting fluid in your mouth (which can happen when an abscess ruptures on its own).