Swollen gums are usually a sign of inflammation caused by bacterial plaque, and the fix starts with better cleaning at the gumline combined with a few simple home remedies. A saltwater rinse, cold compress, and gentle but thorough brushing can bring relief within days. But gum swelling that persists beyond two weeks, or comes with fever and facial swelling, needs professional attention.
Why Your Gums Are Swollen
The most common cause is gingivitis, the earliest stage of gum disease. When plaque (a sticky film of bacteria) builds up along and under the gumline, your immune system responds with inflammation. The gums turn red, puff up, and bleed easily when you brush or floss. Gingivitis is reversible with good oral hygiene, but left alone it can progress to periodontitis, where the bone supporting your teeth starts to break down.
Several other triggers can cause or worsen gum swelling:
- Hormonal changes. Pregnancy, puberty, and menstruation increase levels of estrogen and progesterone, which make gums more sensitive, more prone to swelling, and more likely to bleed. Increased blood flow and shifts in immune function during pregnancy amplify the effect.
- Medications. Roughly 40 to 50% of people taking certain seizure medications (particularly phenytoin), blood pressure drugs called calcium channel blockers, or the immunosuppressant cyclosporine develop some degree of gum overgrowth. If you started a new medication and noticed your gums changing, that connection is worth raising with your prescriber.
- Vitamin C deficiency. Your gums need vitamin C to maintain healthy connective tissue. A study analyzing data from over 8,000 people found that even mildly low vitamin C levels (not low enough to cause scurvy) were linked to increased gum bleeding. The recommended daily intake for adult men is 90 mg; women need 75 mg.
- Infection or abscess. A pocket of pus near a tooth root can cause intense, localized swelling that throbs and worsens over hours.
Saltwater Rinse: Your First Step
A warm saltwater rinse is one of the simplest and most effective things you can do right away. Salt draws fluid out of inflamed tissue, temporarily reducing swelling, and creates an environment that’s harder for bacteria to thrive in.
Mix 1 teaspoon of salt into 8 ounces of warm water until fully dissolved. If that stings too much, cut back to half a teaspoon. Swish the rinse around your mouth for 15 to 30 seconds, then spit it out. You can repeat this up to four times a day. Don’t swallow it.
Cold Compress for Pain and Swelling
If the swelling is visible on the outside of your face, or the area just aches, hold an ice pack or cold compress against the outside of your cheek for 10 to 20 minutes at a time. Place a thin cloth between the ice and your skin to avoid irritation. You can repeat this several times throughout the day with breaks in between.
A cold compress won’t treat the underlying cause, but it constricts blood vessels and slows the inflammatory response enough to make you more comfortable while you address the real problem.
Improve Your Brushing and Flossing
Most gum swelling comes down to plaque that’s sitting where your toothbrush and floss aren’t reaching. Angle your toothbrush at 45 degrees toward the gumline and use short, gentle strokes. Aggressive scrubbing with a hard-bristled brush actually makes things worse by irritating already inflamed tissue. A soft-bristled brush is all you need.
Floss daily, even if your gums bleed when you do it. Bleeding during flossing is a sign of inflammation, not a sign you should stop. In most cases, the bleeding improves within a week or two of consistent flossing as the gums heal.
Look for a toothpaste containing stannous fluoride, which does double duty: it fights cavities and helps prevent gingivitis by controlling plaque bacteria. This ingredient is available in many over-the-counter toothpastes.
Boost Your Vitamin C Intake
If your diet is low in fruits and vegetables, your gums may be paying the price. Harvard Health researchers found that people with low blood levels of vitamin C had a measurably higher tendency toward gum bleeding, even when their levels weren’t dramatically deficient. Adding vitamin C-rich foods like oranges, bell peppers, kiwis, and kale is the best approach. A daily supplement of 100 to 200 mg can also help fill the gap.
What a Dentist Can Do
If home care doesn’t resolve the swelling within a couple of weeks, a dental visit is the next step. Your dentist will check for tartar (hardened plaque that can’t be removed with a toothbrush) and signs of deeper gum disease.
For moderate to advanced gum disease, the standard treatment is a deep cleaning called scaling and root planing. Your gums are numbed with local anesthesia, and your dentist or hygienist uses hand instruments or ultrasonic tools to remove plaque and tartar from above and below the gumline, then smooths the tooth roots so gums can reattach more easily. The appointment takes one to two hours and is sometimes split across two visits. Your provider may also place antibiotics around the tooth roots or prescribe oral antibiotics to help clear the infection.
If your gum swelling is caused by a medication, your dentist and prescriber may work together to adjust your dose or switch to an alternative drug. Meticulous oral hygiene and more frequent professional cleanings can also help manage medication-related gum overgrowth.
Signs You Need Urgent Care
Most gum swelling is uncomfortable but not dangerous. There are a few situations, however, where you should act quickly. If you have a fever along with facial swelling and can’t reach your dentist, go to an emergency room. The same applies if you develop difficulty breathing or swallowing, which can signal that an infection has spread deeper into the jaw, throat, or neck. A visible pocket of pus near the gumline, worsening pain that doesn’t respond to over-the-counter pain relievers, or swelling that spreads to the floor of your mouth or under your eye all warrant same-day dental care.