Gingivitis makes your gums red, puffy, and prone to bleeding, replacing the firm, pale-pink tissue that lines a healthy mouth. It’s the earliest stage of gum disease, and roughly 2 in 5 adults over 30 in the United States have some form of periodontal disease. Recognizing what it looks like early gives you the best chance of reversing it before permanent damage sets in.
Healthy Gums vs. Inflamed Gums
Healthy gum tissue sits snugly against each tooth, fills the spaces between teeth in neat triangular points (called papillae), and has a slightly dimpled surface texture, similar to the skin of an orange. In lighter-skinned individuals, healthy gums are typically coral pink. In people with darker skin tones, healthy gingival tissue naturally ranges from pale pink to brown or even bluish-purple, depending on the amount of melanin pigment present. This variation is completely normal and not a sign of disease.
When gingivitis develops, the contrast becomes clear. The gum tissue shifts toward a deeper red or magenta. In darker gums, that redness can be harder to spot visually, so swelling and bleeding become more reliable indicators. The gums look puffy rather than tight, and those neat triangular points between your teeth may appear rounded or blunted. The dimpled texture can smooth out as inflammation takes hold, though mild cases don’t always produce that change.
What Causes the Visible Changes
The trigger is plaque, a sticky, mostly colorless film of bacteria that builds up along your gum line every day. If you run your tongue over teeth that haven’t been brushed in a while and they feel slightly fuzzy, that’s plaque. When plaque sits undisturbed, it hardens into tartar, a rough, yellowish or brownish deposit that you can sometimes see at the base of your teeth near the gums. Your immune system responds to the bacterial buildup by sending more blood to the area, which is what produces the redness and swelling you see. Plaque itself is nearly invisible, but the inflammation it causes is not.
Bleeding: Often the First Sign
One of the most telling visual clues is blood on your toothbrush, in the sink, or on dental floss. Research suggests that bleeding is actually an earlier indicator of gingivitis than redness or swelling. You might notice pink-tinged saliva after brushing or a metallic taste in your mouth. In a clinical setting, dentists use a gentle probing test along the gum line. If 10% or more of the tested sites bleed, that meets the diagnostic threshold for gingivitis.
Many people dismiss occasional bleeding as normal, especially if they’ve just started flossing again after a break. But healthy gums don’t bleed from routine brushing or flossing. If yours do, the tissue is inflamed, even if it doesn’t look dramatically different yet.
How It Looks at Different Stages
Early gingivitis can be subtle. You might notice a slight puffiness or color change in just one or two spots, often between the front lower teeth or along the back molars where plaque tends to accumulate. The gums may look a little shinier than usual because swelling stretches the tissue smooth.
As inflammation progresses, the changes become more obvious. The redness spreads along the gum line rather than staying in isolated patches. Gums may start to pull slightly away from the teeth, creating small pockets where more bacteria collect. You might see a visible line of tartar buildup, especially on the inside surfaces of your lower front teeth, where saliva ducts deposit minerals that harden plaque quickly.
At this point, bad breath often accompanies the visual signs. The bacterial colonies producing the inflammation also release sulfur compounds that cause a persistent odor, even right after brushing.
Pregnancy Gingivitis
Hormonal shifts during pregnancy can make gingivitis look and feel more intense, even in someone who had healthy gums before. Rising levels of estrogen and progesterone increase blood flow to gum tissue and amplify the body’s inflammatory response to plaque. The result is gums that appear noticeably red, swollen, and tender. Bleeding after brushing or flossing is common. Some pregnant women develop a localized, rounded swelling on the gum called a pregnancy granuloma, a bright red or purple bump that bleeds easily. These changes typically peak in the second trimester and often improve after delivery.
Necrotizing Gingivitis: A Severe Form
A rare but visually distinct form called necrotizing ulcerative gingivitis looks very different from typical gingivitis. The triangular gum tissue between teeth appears “punched out,” meaning those pointed tips are destroyed and replaced by craters or ulcers. A grayish-white film, sometimes called a pseudomembrane, may cover the affected areas. The pain is usually severe, and the breath has a characteristically foul odor. This form is associated with extreme stress, malnutrition, smoking, and immune suppression. It requires prompt professional treatment.
What Gingivitis Does Not Look Like
Gingivitis does not cause teeth to loosen or shift position. It does not create deep gaps between the gums and teeth that expose tooth roots. Those are signs of periodontitis, a more advanced stage of gum disease where the bone supporting your teeth has started to break down. The key clinical distinction is that gingivitis involves inflammation without permanent attachment loss. Your gums are irritated, but the underlying structures remain intact. That’s precisely why gingivitis is reversible and periodontitis generally is not.
Gum recession, where the tissue visibly pulls away from the tooth and exposes the root surface, can be a sign of progressing disease or aggressive brushing habits. If your teeth look longer than they used to, or you can see a yellowish root surface below the enamel line, the problem has likely moved beyond simple gingivitis.
Checking Your Own Gums
You can do a basic visual check at home with a mirror and good lighting. Pull your lip away from your teeth and look at the gum tissue along both the upper and lower arches. Compare the color of the tissue right at the tooth margin with the tissue farther up (or down) toward the lip. In gingivitis, the margin is typically redder and puffier than the surrounding tissue. Press gently with a clean finger. Healthy gums feel firm and don’t hurt. Inflamed gums feel spongy and may be tender to the touch.
Pay extra attention to the spaces between teeth. That’s where inflammation usually starts because plaque accumulates there first. If the gum between two teeth looks swollen, shiny, or bleeds when you floss, those are classic early signs. Also check behind your lower front teeth with a small mirror. Tartar tends to build up there faster than anywhere else in the mouth, appearing as a hard, off-white or yellowish crust along the gum line.