Healthy gums are pale pink, firm, and don’t bleed when you brush or floss. If yours are red, puffy, or leave blood on your toothbrush, you likely have at least the earliest stage of gum disease. About 42% of American adults over 30 have some form of periodontitis, and many don’t realize it because the condition progresses slowly and often without pain.
Gum disease exists on a spectrum. Catching it early, when it’s still gingivitis, means it’s fully reversible. Letting it progress can lead to bone loss and loose teeth. Here’s how to assess what’s happening in your mouth.
The Earliest Sign: Bleeding
Bleeding gums are not normal. If flossing or brushing routinely produces blood, that’s inflammation, and inflammation is the hallmark of gingivitis. Some people assume a little bleeding is just part of flossing, but healthy gum tissue doesn’t bleed from routine cleaning. Bacteria, tartar, and plaque build up along the gumline when oral hygiene is inconsistent, and that buildup irritates the tissue until it swells and bleeds easily.
Here’s a useful test: if you start flossing daily and the bleeding stops within two to three weeks, your gums were inflamed but are recovering. If bleeding persists beyond that, the problem is deeper than surface-level irritation and worth having evaluated.
What Gingivitis Looks and Feels Like
Stand in front of a mirror in good light and pull your lip away from your teeth. Healthy gums hug each tooth snugly, look uniformly pink (or coral-pink in darker skin tones), and have a slightly stippled texture, like the surface of an orange peel. Gums affected by gingivitis look different in several specific ways:
- Color change. Red or dark red tissue along the gumline, especially in the triangles of gum between teeth.
- Swelling. Puffy, rounded gum margins instead of a thin, knife-edge contour.
- Tenderness. Gums that feel sore when you press on them or when food pushes against them.
- Bad breath. Persistent bad breath that doesn’t go away after brushing, caused by bacteria thriving under the gumline.
Gingivitis often causes no pain at all, which is part of why it goes unnoticed. You can have visible redness and swelling without ever feeling discomfort. That’s why the visual check matters.
Signs the Disease Has Progressed
When gingivitis goes untreated, it can advance into periodontitis, where the infection moves below the gumline and starts breaking down the bone and connective tissue that hold your teeth in place. This stage brings a different set of warning signs that are harder to miss.
Receding gums are one of the clearest indicators. If your teeth look longer than they used to, or you can see a yellowish root surface near the gumline, the tissue has pulled away from the tooth. Exposed roots also create sharp sensitivity to hot, cold, sweet, sour, or acidic foods. That sudden zing when you sip ice water or bite into something sweet is your root surface reacting without its usual protective covering.
Other signs of advancing gum disease include teeth that feel loose or seem to have shifted position, a change in how your teeth fit together when you bite down, pus between your teeth and gums, and a persistent bad taste in your mouth. If you notice gaps opening between teeth that used to sit tightly together, that’s often bone loss allowing the teeth to drift.
What You Can’t Check at Home
A mirror will show you surface changes, but gum disease also causes damage you can’t see or feel. The most important measurement is pocket depth: the space between each tooth and the surrounding gum tissue. Your dentist checks this by gently sliding a thin probe into the space around each tooth and reading the depth in millimeters.
- 1 to 3 mm: Normal, healthy attachment.
- 4 to 5 mm: Early or mild periodontitis.
- 5 to 7 mm: Moderate periodontitis.
- 7 to 12 mm: Advanced periodontitis with significant tissue destruction.
You can’t measure pocket depth yourself. You also can’t see bone loss, which only shows up on dental X-rays. A periapical X-ray reveals whether the bone supporting your tooth roots has started to shrink. By the time you notice a loose tooth, substantial bone has already been lost. This is why professional screening catches gum disease at stages you’d never detect on your own, particularly on the tongue side of your teeth and between molars where visibility is poor.
Risk Factors That Speed Things Up
Some people are more vulnerable to gum disease than others, even with similar brushing habits. Smoking is one of the strongest risk factors. It restricts blood flow to the gums, masks early bleeding (so you miss the warning signs), and makes treatment less effective once the disease is established.
Diabetes creates a two-way problem. High blood sugar weakens white blood cells, your body’s primary defense against oral infections. It also raises sugar levels in saliva, feeding the bacteria that cause plaque buildup. People with diabetes tend to develop more severe gum disease, and it takes longer to heal. Hormonal changes during pregnancy or menopause can also make gums more reactive to plaque, as can certain medications that reduce saliva flow.
If any of these apply to you and you’re noticing even mild symptoms like occasional bleeding or slight puffiness, the disease may be progressing faster than it would in someone without these risk factors.
What a Dental Visit Actually Involves
A gum disease screening is straightforward. Your dentist visually inspects for redness, swelling, and signs of infection, then measures pocket depths around each tooth. The probe feels like light pressure, not a sharp poke. If pockets are deeper than 3 mm or your gums bleed during probing, they’ll likely take X-rays to check for bone loss beneath the surface.
For gingivitis, the fix is usually a professional cleaning to remove hardened tartar that brushing can’t reach, followed by consistent home care. Tartar (calcified plaque) can’t be removed with a toothbrush. Once it’s gone and you maintain daily brushing and flossing, the inflammation typically resolves completely.
For periodontitis, treatment scales up depending on severity. The goal shifts from just cleaning the surface to clearing bacteria from deep pockets and giving the tissue a chance to reattach. Recovery timelines vary, but mild to moderate cases often stabilize within a few months of treatment and improved home care. Advanced cases with significant bone loss require more involved procedures and longer follow-up. The earlier you catch it, the simpler and more predictable the outcome.
Nearly 60% of adults 65 and older have periodontitis. Much of that is preventable disease that started with the same red, puffy gums you might be noticing right now. If you’re questioning whether something looks off, it probably does.