Swollen gums are almost always a sign of inflammation, and the single most effective thing you can do is improve your daily brushing and flossing routine. In most cases, gum swelling is caused by plaque buildup along the gumline, which triggers your body’s inflammatory response. The good news: if caught early, this is completely reversible. But some causes need professional treatment, so knowing what’s behind the swelling matters.
Figure Out What’s Causing It
The most common reason gums swell is gingivitis, the mildest form of gum disease. Bacteria in your mouth constantly produce a sticky film called plaque on your teeth. When plaque sits along the gumline for too long, it irritates the tissue and causes redness, puffiness, and bleeding when you brush. Gingivitis is reversible with better oral hygiene, but if left alone, plaque hardens into tartar, which you can’t remove at home. From there, bacteria can spread below the gumline and form deeper pockets between your teeth and gums, eventually destroying bone. That stage is called periodontitis, and it’s irreversible, though it can be managed.
Plaque buildup isn’t the only possibility. Several other factors cause or worsen gum swelling:
- Hormonal changes: Pregnancy, menopause, and menstrual cycles can increase blood flow to the gums and make them more sensitive to plaque. During pregnancy, symptoms often appear in the first trimester and peak in the second or third, driven by rising estrogen and progesterone levels.
- Medications: Some blood pressure drugs, anti-seizure medications, and immunosuppressants list gum overgrowth as a side effect.
- Nutritional deficiencies: Low vitamin C intake is directly linked to gum bleeding and swelling.
- Diabetes: Uncontrolled blood sugar makes gum infections more likely and harder to heal.
- Smoking: Tobacco use weakens your immune response in the mouth and masks early symptoms like bleeding.
- Stress, genetics, and teeth grinding also raise your risk.
What to Do at Home Right Now
Start with the basics: brush twice a day with a soft-bristled toothbrush, and floss once daily. If you haven’t been flossing, your gums will likely bleed the first few days. That’s normal. Don’t stop. The bleeding usually decreases within a week as inflammation goes down. Focus the bristles at a 45-degree angle toward the gumline, where plaque collects most.
A saltwater rinse can help reduce swelling and kill some of the bacteria irritating your gums. Mix 1 teaspoon of salt into 8 ounces of warm water, swish for 30 seconds, and spit. If your mouth is tender, cut the salt to half a teaspoon for the first day or two. You can rinse a few times a day, especially after meals, but don’t overdo it since too much saltwater can dehydrate your mouth’s tissues.
For pain and inflammation, an over-the-counter anti-inflammatory like ibuprofen (400 mg every four to six hours as needed, taken with food) can bring relief. It reduces both pain and the inflammatory process itself, which is more helpful for gum swelling than acetaminophen, which only addresses pain. Applying a cold compress to the outside of your cheek in 15-minute intervals can also ease discomfort.
Check Your Vitamin C Intake
Research from Harvard Health links low vitamin C levels to bleeding and swollen gums. The recommended daily intake is 90 mg for adult men and 75 mg for adult women, but experts suggest aiming for 100 to 200 mg daily through food or a supplement. Good sources include bell peppers, kiwis, oranges, strawberries, and kale. If your diet has been lacking in fruits and vegetables, this is a straightforward fix that can make a noticeable difference.
When You Need Professional Cleaning
If your gums have been swollen for more than a week or two despite good home care, or if you can see tartar buildup (a hard, yellowish deposit near the gumline), you need a professional cleaning. A regular cleaning handles plaque and tartar above the gumline. But if bacteria have already started forming pockets below the gumline, your dentist may recommend a deep cleaning, formally called scaling and root planing.
During this procedure, your gums are numbed with local anesthesia. A hygienist uses hand instruments or ultrasonic tools to remove plaque and tartar from both above and below the gumline, then smooths the tooth roots so gums can reattach more easily. The whole process takes one to two hours, sometimes split across two visits. Your dentist may also prescribe antibiotics to help clear any remaining infection.
After a deep cleaning, your gums will feel sore and sensitive for a few days. Within about one week, most people notice their gums look and feel significantly healthier. Full healing typically takes two to four weeks. During that time, stick to soft foods, keep up with gentle brushing and flossing, and use any prescribed rinses.
Swollen Gums During Pregnancy
Pregnancy gingivitis affects a large number of pregnant women and isn’t a reflection of poor hygiene. Rising estrogen and progesterone increase blood flow to the gums and change how your body reacts to plaque, making the tissue more prone to swelling, soreness, and bleeding. Symptoms can start in the first trimester and often worsen as the pregnancy progresses.
The approach is the same: gentle but thorough brushing and flossing, saltwater rinses, and a dental cleaning during your second trimester if your dentist recommends one. Most pregnancy gingivitis resolves after delivery as hormone levels return to normal.
Signs That Need Urgent Attention
Most gum swelling responds to home care or a dental visit within a reasonable timeframe. But certain symptoms signal something more serious, like a dental abscess, where infection has formed a pocket of pus in or around the tooth. Watch for a persistent throbbing pain that doesn’t respond to over-the-counter medications, a visible bump or pimple on the gum, a foul taste in your mouth, or swelling that spreads to your cheek or jaw.
If you develop a fever along with facial swelling, or if you have difficulty breathing or swallowing, go to an emergency room. These signs suggest the infection may have spread beyond the tooth into your jaw, throat, or neck, which can become dangerous quickly.