A gum that appears to stick out or bulge is almost always swollen, overgrown, or both. The most common reason is inflammation from plaque buildup, but medications, hormonal changes, and localized growths can all make gum tissue protrude noticeably. In most cases the cause is treatable, though a few signs warrant prompt attention.
Plaque Buildup and Gum Inflammation
The single most frequent cause of gum tissue that looks puffy or pushed out is gingivitis, the earliest stage of gum disease. When plaque sits along the gumline, the body sends extra blood flow to fight the bacteria. The tissue swells, turns red or dark pink, and can start to look like it’s growing over the edges of your teeth. You might also notice bleeding when you brush or floss.
If gingivitis goes untreated, it can progress to periodontitis, where the gums pull away from the teeth and form deeper pockets. Paradoxically, this deeper damage can also make certain areas of gum tissue bulge or appear uneven, because inflammation and infection reshape the tissue over time. Gingivitis is defined clinically as inflammation at 10% or more of sites in the mouth with no permanent attachment loss, so catching it early means no lasting damage has occurred.
Localized Bumps and Growths
Sometimes it isn’t the whole gumline that sticks out but a single spot. The most common localized gum growths are reactive lesions, meaning the tissue is responding to irritation rather than growing on its own. These include:
- Fibrous epulis: A firm, pink, painless lump that forms on the gum near an area of chronic irritation like a rough filling edge or ill-fitting denture.
- Pyogenic granuloma: A soft, red, mushroom-shaped growth that bleeds easily. Despite the dramatic name, it’s benign. It develops when blood vessels overgrow in response to irritation or hormonal changes.
- Peripheral giant cell granuloma: A dark red or purple nodule, usually on the lower gum, that arises from the tissue covering the jawbone.
All three of these are non-cancerous. They can look alarming, especially a pyogenic granuloma that bleeds with minimal contact, but they’re generally removed with a simple in-office procedure and rarely come back once the source of irritation is addressed.
Medications That Cause Gum Overgrowth
Certain prescription drugs are well known for making gum tissue enlarge to the point where it visibly covers portions of the teeth. Three drug classes account for the vast majority of cases:
- Seizure medications: Phenytoin is the most common culprit, but sodium valproate and several others in this class can trigger overgrowth too.
- Immunosuppressants: Cyclosporine, widely used after organ transplants, causes noticeable gum enlargement in roughly 53% of patients taking it after a kidney transplant. Tacrolimus and sirolimus can do the same, though typically less severely.
- Blood pressure medications (calcium channel blockers): Nifedipine and amlodipine are the most frequently reported, but verapamil, diltiazem, and several related drugs carry the same risk.
Drug-related gum overgrowth tends to start between the teeth and spread outward, making the gum tissue look lumpy or scalloped. It usually appears within the first few months of starting the medication and gets worse when oral hygiene is poor. If you recently started one of these drugs and your gums seem to be expanding, your dentist and prescribing doctor can discuss whether switching medications is possible. In many cases, the overgrowth partially reverses once the drug is stopped or changed.
Pregnancy and Hormonal Shifts
Hormonal changes during pregnancy increase blood flow to gum tissue and amplify the body’s inflammatory response to plaque. Some pregnant people develop a “pregnancy tumor,” which is actually a pyogenic granuloma on the gum. It occurs in up to 5% of pregnancies, typically appearing in the second or third trimester as a red, rounded bump that bleeds easily.
The growth is driven in part by high levels of a protein that stimulates new blood vessel formation. After delivery, that protein drops to nearly undetectable levels, and many pregnancy-related gum growths shrink or disappear on their own. If the growth persists or causes significant discomfort, surgical removal after delivery is straightforward and effective. Puberty and hormonal contraceptives can produce a milder version of the same gum swelling, though actual growths are less common outside of pregnancy.
Braces and Orthodontic Appliances
Brackets, wires, and bands make it harder to clean thoroughly around the gumline, and plaque accumulates faster in the small spaces created by orthodontic hardware. The result is often localized swelling that makes gum tissue puff out around individual brackets or between teeth. Some people also develop irritation where a wire or band rubs directly against the gum, adding mechanical trauma to the bacterial inflammation.
Keeping the area clean is the primary fix. Interdental brushes, a water flosser, and careful brushing around each bracket can bring the swelling down within a couple of weeks. If certain gum tissue has become so overgrown that it traps food and bacteria underneath, your orthodontist may recommend having the excess tissue trimmed before continuing treatment.
Allergic Reactions in the Gums
A less obvious cause of swollen, protruding gums is a hypersensitivity reaction called plasma cell gingivitis. The gums become intensely red, shiny, and enlarged, sometimes across the entire mouth. Common triggers include ingredients in toothpaste, cinnamon-flavored foods, and chewing gum. Because the reaction looks similar to other forms of gum disease, it often takes a biopsy to confirm. Identifying and removing the allergen usually resolves the swelling, though it can take several weeks for the tissue to return to normal.
When a Growth Could Be Serious
Most gum bumps and swelling are benign, but oral cancer can present as a growth or lump on the gum. Warning signs that set a potentially serious growth apart from a routine one include a sore or mass that doesn’t heal within two weeks, a white or reddish patch on the gum surface, unexplained loosening of nearby teeth, persistent mouth or ear pain, and difficulty swallowing or opening the mouth. A cancerous growth is more likely to be painless at first and to feel firmly attached to the underlying bone rather than soft and movable. Any gum lump that persists beyond two weeks without improvement deserves professional evaluation, even if it doesn’t match every warning sign.
How Excess Gum Tissue Is Treated
Treatment depends entirely on the cause. For inflammation-driven swelling, improving oral hygiene and getting a professional cleaning is often enough. Scaling and root planing, a deeper cleaning below the gumline, may be needed if periodontitis is involved.
When gum tissue has physically overgrown and won’t shrink on its own, a gingivectomy removes the excess. The procedure is done under local anesthesia, and healing takes about one week on average. Most people return to work or school within a day or two, though physical labor and strenuous exercise should wait at least 48 hours to avoid extra bleeding and swelling. For drug-induced overgrowth, the first step is usually working with your doctor to switch medications. If the tissue doesn’t fully resolve after the drug change, a gingivectomy can reshape the gums.
Localized growths like a fibrous epulis or pyogenic granuloma are typically excised in a single office visit. The dentist or oral surgeon will also address whatever was irritating the area, whether that’s a rough restoration edge, a poorly fitting prosthetic, or trapped plaque, to prevent recurrence.