If your gum is swollen, start by rinsing with warm salt water, taking an anti-inflammatory pain reliever, and gently brushing the area to clear away bacteria. Most minor gum swelling responds to consistent home care within a few days. But the right next step depends on what’s causing the swelling, so identifying the trigger matters just as much as treating the symptom.
Why Your Gum Is Swollen
Gum disease is the single most common cause. Over 42% of American adults 30 and older have some form of periodontitis, the more advanced stage of gum disease. It usually starts as gingivitis, where plaque buildup along the gumline triggers inflammation. Your gums turn red, puff up, and bleed when you brush. Left alone, the infection can deepen into pockets between your teeth and gums that reach a centimeter or more, eventually breaking down the bone that holds your teeth in place.
But gum disease isn’t the only explanation. A swollen spot on one area of your gum could point to a tooth abscess (a pocket of pus from infection), a cracked tooth root, or even something as simple as a piece of food wedged under your gumline. Braces can cause localized swelling where plaque builds up around brackets and wires, and poorly fitting dentures can irritate the tissue beneath them.
Hormonal shifts are another well-documented trigger. Rising estrogen and progesterone during pregnancy increase blood flow to the gums and amplify the body’s inflammatory response to plaque. Puberty creates a similar effect. Menopause works differently: declining estrogen weakens the connective tissue in the gums, making them more vulnerable to swelling and recession. Medical conditions like diabetes, oral thrush, viral infections, and deficiencies in vitamin B or C can also cause gum inflammation that looks and feels a lot like gum disease but won’t fully resolve until the underlying issue is addressed.
Home Remedies That Actually Help
A warm salt water rinse is one of the simplest and most effective things you can do. Mix half a teaspoon of salt into a cup of warm water and swish it around the swollen area for 30 seconds before spitting it out. Salt water helps draw fluid out of inflamed tissue and creates an environment that’s harder for bacteria to thrive in. You can repeat this several times a day.
For pain and swelling, ibuprofen is a better choice than acetaminophen alone because it targets inflammation directly. The American Dental Association recommends ibuprofen as the first-line option for dental pain. For mild discomfort, 200 to 400 mg every four to six hours is typically enough. For more significant pain, combining ibuprofen with acetaminophen is more effective than either one alone. The FDA has approved an over-the-counter combination product with both, and studies involving over 58,000 patients found this combination outperformed even opioid-based regimens for dental pain relief.
A cold compress held against the outside of your cheek for 15 to 20 minutes can also reduce swelling and numb the area temporarily. Avoid hot foods and drinks while the gum is actively inflamed, as heat increases blood flow to the area and can make swelling worse.
How to Brush When Your Gums Hurt
It sounds counterintuitive, but you need to keep brushing the swollen area. Plaque is what’s driving most gum inflammation, and skipping that spot lets bacteria multiply unchecked. The key is technique.
Use a soft-bristled toothbrush and angle it toward the gumline at roughly 45 degrees. Brush gently in small circular or sweeping motions rather than scrubbing side to side. Research comparing toothbrush types found that both soft and medium bristles significantly reduce gum inflammation when used properly for two minutes twice a day. Medium bristles removed more plaque in clinical testing, but if your gums are already swollen and tender, a soft brush causes less irritation while still being effective.
Flossing matters just as much as brushing here. Swelling that’s concentrated between two teeth often means bacteria are trapped in a spot your toothbrush can’t reach. Slide the floss gently below the gumline and curve it around each tooth. If regular floss is too painful, a water flosser or interdental brush can clean those gaps with less pressure on sensitive tissue.
When Swollen Gums Need Professional Care
Home care works well for mild gingivitis and minor irritation, but some situations require a dentist. If the swelling hasn’t improved after a week of consistent brushing, flossing, and salt water rinses, something deeper is likely going on. Persistent swelling often signals periodontitis, where the infection has moved below the gumline into tissue and bone that you can’t clean on your own.
Certain symptoms are more urgent. A visible bump on your gum that feels like it’s filled with fluid, a bad taste in your mouth, or throbbing pain that wakes you up at night can all point to a dental abscess. If you develop a fever along with facial swelling, or if you have difficulty breathing or swallowing, go to an emergency room. These are signs that the infection may have spread beyond the tooth into your jaw, throat, or neck.
At a dental visit, your dentist will use a small probe to measure the depth of the pockets between your teeth and gums. Healthy pockets are shallow, just a few millimeters. Deeper pockets suggest periodontitis, and X-rays can reveal whether bone loss has already started. A professional cleaning removes hardened plaque (called calculus or tartar) that you can’t brush away at home, and this alone resolves many cases of gum swelling.
Pregnancy and Hormonal Swelling
If you’re pregnant and your gums are swollen, you’re dealing with a well-studied phenomenon. Pregnancy gingivitis is driven by the surge in estrogen and progesterone that increases blood flow to your gums and amplifies how aggressively your immune system reacts to even small amounts of plaque. The swelling isn’t caused by the hormones alone. It’s plaque-triggered inflammation that hormones make worse.
That distinction matters because it means the most effective thing you can do is stay on top of oral hygiene. Thorough brushing and flossing minimize the plaque that hormones are overreacting to. Professional cleanings during pregnancy are safe and can help keep inflammation under control during the months when your gums are most vulnerable.
Nutrition and Gum Health
Vitamin C plays a direct role in maintaining gum tissue. A total deficiency causes scurvy, which shows up as spongy, swollen, bleeding gums along with loose teeth and poor wound healing. Scurvy develops when intake drops below 10 mg of vitamin C per day, well below the recommended daily amount of 90 mg for men and 75 mg for women. You don’t need to reach scurvy-level deficiency for low vitamin C to affect your gums. Suboptimal levels weaken the collagen that forms the structure of your gum tissue and the ligaments holding your teeth in place.
If your diet is low in fruits and vegetables, or if you smoke (which depletes vitamin C faster), addressing that gap can support gum healing alongside good oral hygiene. Citrus fruits, bell peppers, strawberries, and broccoli are all rich sources. Vitamin B deficiencies can also contribute to oral inflammation, though this is less common in people eating a varied diet.