Mild gum swelling usually responds to a few days of consistent home care, and most cases tied to plaque buildup or minor irritation start improving within a week. If swelling persists beyond two weeks, though, something deeper is going on and you’ll need professional treatment. Here’s how to tackle it at both levels.
Salt Water Rinses
The simplest first step is a warm salt water rinse. Mix half a teaspoon of salt into a cup of warm water, swish it around your mouth for 30 seconds, and spit. Do this two to three times a day. The salt draws fluid out of swollen tissue through osmosis, which reduces puffiness, and it also limits the bacteria feeding the inflammation. This won’t cure the underlying cause, but it reliably brings down swelling and discomfort within a day or two.
Cold Compresses and Over-the-Counter Options
A cold compress held against your cheek (10 minutes on, 10 minutes off) constricts blood vessels near the swollen area and numbs the pain. This works best for acute flare-ups or swelling triggered by an injury.
For more persistent inflammation, an antiseptic mouthwash can help. Over-the-counter rinses containing essential oils have been shown to cut plaque levels dramatically and reduce bleeding at the gumline. In one clinical trial, plaque scores dropped from over 50% to about 5% over the treatment period. Prescription-strength rinses containing chlorhexidine perform similarly and are sometimes recommended for more stubborn cases. Ask your dentist or pharmacist which makes sense for your situation.
Standard anti-inflammatory pain relievers like ibuprofen also reduce gum swelling directly, not just pain. Follow the label directions and avoid aspirin if the gums are actively bleeding, since aspirin thins the blood.
Improve Your Brushing and Flossing Technique
Swollen gums are almost always a sign that plaque is accumulating along or below the gumline. The fix sounds obvious, but the details matter. Use a soft-bristled toothbrush and angle it at about 45 degrees toward the gumline, using short, gentle strokes. A hard-bristled brush or aggressive scrubbing can make inflamed tissue worse.
Floss daily, easing the floss gently between teeth rather than snapping it against the gums. If traditional floss is too painful on swollen tissue, a water flosser is a good alternative. Consistent, gentle cleaning removes the bacterial film that’s triggering the swelling in the first place. Most people who commit to twice-daily brushing and daily flossing notice improvement within a few days.
Check Your Vitamin C Intake
Low vitamin C is an underappreciated cause of gum problems. A Harvard Health analysis of data from over 8,000 people found that even mildly low vitamin C levels, not severe enough to cause scurvy, were associated with increased gum bleeding and inflammation. The recommended daily intake is 90 mg for adult men and 75 mg for women. If your diet is light on fruits and vegetables, adding foods like bell peppers, kiwis, oranges, and kale can make a noticeable difference. A daily supplement of 100 to 200 mg is another simple option.
Hormonal Swelling During Pregnancy
If you’re pregnant and dealing with swollen, tender gums, you’re far from alone. Rising levels of estrogen and progesterone change the way your gum tissue reacts to plaque. The same amount of bacterial buildup that your gums tolerated before pregnancy can now trigger significant inflammation and bleeding. This is called pregnancy gingivitis, and it’s one of the most common oral health issues during pregnancy.
The approach is the same: gentle, consistent brushing and flossing, salt water rinses, and keeping up with dental cleanings. The swelling typically eases after delivery as hormone levels stabilize, but ignoring it can allow the inflammation to progress.
When Home Care Isn’t Enough
If your gums are still swollen after two weeks of diligent home care, you likely have tartar buildup below the gumline that brushing and flossing can’t reach. A dentist can perform a deep cleaning, which involves scraping tartar from the tooth surfaces above and below the gumline and smoothing the root surfaces so bacteria have fewer places to cling. Most people return to normal activities the same day, though gums can feel sore for a couple of days afterward. Once the infection clears, the swollen tissue shrinks back.
Some symptoms signal something more urgent than gingivitis. A gum abscess, which is a pocket of infection, can cause throbbing pain, pus at the gumline, a bad taste in your mouth, swollen lymph nodes in your neck, or a loose tooth. If you notice any of these, call a dentist promptly. And if swelling is accompanied by fever, chills, difficulty breathing, or difficulty swallowing, go to an emergency room. These signs suggest the infection is spreading beyond the gum tissue.