Swollen gums usually result from bacterial plaque buildup along the gumline, and the fastest way to resolve mild cases is a combination of improved brushing, daily flossing, and saltwater rinses. Most swelling from early gum inflammation (gingivitis) can clear up within days to a few weeks once you address the cause. More persistent or severe swelling may need professional treatment.
Why Your Gums Are Swollen
The most common cause is gingivitis, a low-grade infection driven by bacterial plaque that collects where your teeth meet your gums. It affects roughly 45% of adults and shows up as redness, puffiness, and bleeding when you brush. Left untreated, gingivitis can progress to periodontitis, a more destructive form of gum disease that affects about 4 in 10 U.S. adults over 30. At that stage, the bone supporting your teeth starts breaking down, and some of that damage is permanent.
But plaque isn’t the only culprit. Several other things can trigger gum swelling:
- Hormonal shifts during pregnancy. Rising progesterone levels dilate the tiny blood vessels in your gums, making them more permeable and dramatically more reactive to plaque. Estrogen further weakens the gum tissue’s protective barrier. The result is that the same amount of plaque that barely bothered you before pregnancy can now cause significant inflammation. Progesterone also fuels the growth of certain bacteria linked to gum disease.
- Certain medications. Some drugs cause actual gum overgrowth, not just inflammation. Phenytoin (used for seizures) triggers it in about 50% of people who take it. The blood pressure drug nifedipine causes it in roughly 38% of users, while other calcium channel blockers like diltiazem and amlodipine carry lower but real risks. Cyclosporine, an immune-suppressing drug, causes gum enlargement in anywhere from 13% to 85% of patients depending on the study.
- Vitamin C deficiency. Adults getting less than 7 to 8 mg of vitamin C daily risk deficiency, and bleeding, swollen gums are one of the hallmark signs. Severe deficiency (scurvy) causes gums to become spongy and teeth to loosen.
- Trapped food, ill-fitting dentures, or a new dental appliance. These cause localized irritation that typically resolves quickly once the source is removed.
Home Remedies That Reduce Swelling
For mild gum swelling, a saltwater rinse is the simplest starting point. Dissolve half a teaspoon of salt in a cup of warm water, swish it gently around your mouth for 30 seconds, and spit. Salt water draws fluid out of inflamed tissue through osmosis and creates a temporarily less hospitable environment for bacteria.
Beyond rinses, the most effective home strategy is improving your daily oral hygiene. That means brushing twice a day with a soft-bristled toothbrush (medium or hard bristles can further irritate swollen tissue) and flossing once daily. If your gums bleed when you floss, that’s a sign of inflammation, not a reason to stop. The bleeding typically decreases within a week or two of consistent flossing as your gums begin to heal.
Antiseptic mouthwashes containing chlorhexidine can help reduce gum inflammation when used alongside regular brushing and flossing. A large Cochrane review found clear benefits for gingival health, though no evidence that higher concentrations work better than lower ones. One important caveat: using chlorhexidine rinses for four weeks or longer causes noticeable tooth staining. These products work best as a short-term boost, not a permanent addition to your routine.
When Home Care Isn’t Enough
If your gums have been swollen for more than one to two days despite good hygiene, or if you notice your gums pulling away from your teeth, persistent bad breath, or pockets forming between your teeth and gums, you likely need professional cleaning. A standard cleaning handles surface-level buildup, but if the pockets between your gums and teeth have deepened, your dentist may recommend scaling and root planing.
During this procedure, a dentist or hygienist removes all plaque and hardite (tartar) above and below the gumline, cleaning down to the bottom of each pocket. Then they smooth the root surfaces of your teeth so your gums can reattach more easily. It often takes more than one visit and may require local anesthetic. Your dentist will bring you back afterward to measure whether the pockets have improved. If they haven’t, further treatment may be needed, sometimes including medication placed directly into the cleaned pockets.
How Long Recovery Takes
Swelling from a simple irritant like trapped food or a rough dental appliance can resolve within hours to a couple of days. Gingivitis-related swelling typically improves within days to a few weeks of consistent treatment, whether that’s better home care or professional cleaning. Periodontitis takes longer. While inflammation can be reduced, damage like gum detachment and bone loss is not reversible, which is why catching gum disease early matters so much.
Nutrition and Gum Health
If your diet is low in fresh fruits and vegetables, your gums may be paying the price. Vitamin C is essential for maintaining the connective tissue in your gums, and deficiency directly causes bleeding and swelling. The fix is straightforward: eat more citrus, berries, peppers, broccoli, and tomatoes. How you prepare vegetables matters too. Boiling destroys a significant portion of their vitamin C content. Eating produce raw, lightly steaming it, or roasting it preserves more of the nutrient.
Risk Factors That Make Gum Problems Worse
Smoking is one of the strongest risk factors for gum disease. About 62% of current smokers over 30 have periodontitis, compared to the general rate of roughly 40%. Diabetes also significantly raises risk, with about 60% of adults living with diabetes affected. Lower income and certain racial disparities play a role as well: 60% of adults living below the poverty line and 57% of non-Hispanic Black adults have some level of periodontitis, reflecting inequities in access to dental care.
If you’re taking a medication known to cause gum overgrowth, talk to your prescriber about alternatives. In many cases, switching to a different drug in the same class can reduce or eliminate the gum enlargement, though this should always be weighed against how well the medication is managing your underlying condition.
Signs That Need Urgent Attention
Most swollen gums are a nuisance, not an emergency. But certain combinations of symptoms signal a spreading infection that can become dangerous. If you develop a fever along with facial swelling and can’t reach your dentist, go to an emergency room. The same applies if you have difficulty breathing or swallowing, which can indicate the infection has spread deeper into your jaw, throat, or neck. A visible pocket of pus on your gums (an abscess) also warrants prompt professional care, as these infections don’t resolve on their own.