Gum disease changes the color, shape, and texture of your gums in ways you can often spot in the mirror. Healthy gums are pale pink, firm, and fit snugly around each tooth with small pointed triangles of tissue filling the gaps between them. When disease sets in, those gums shift toward red or purple, swell, and start pulling away from the teeth. What you see depends on how far the disease has progressed.
What Healthy Gums Look Like
Before you can recognize disease, it helps to know what normal looks like. Healthy gum tissue is a consistent pale pink color (though naturally darker pigmentation is normal in people with darker skin tones). The surface has a slightly stippled texture, similar to the skin of an orange. The gums sit tight against the teeth with no gaps, and the small triangles of tissue between teeth (called papillae) come to a neat point that fills the space completely. Healthy gums do not bleed when you brush, floss, or eat.
Early Gum Disease: Gingivitis
Gingivitis is the mildest form, and it’s the stage most people notice first. The gums become redder than usual, slightly swollen, and may look shiny or glazed instead of having that subtle orange-peel texture. At this point the changes can be subtle enough that you might not see them right away, but you’ll likely notice bleeding when you brush or floss. That bleeding is the single most common early sign.
As gingivitis worsens, the redness deepens, the swelling becomes more obvious, and the gums may bleed not just from brushing but from eating hard foods like apples or crusty bread. You might also notice persistent bad breath that doesn’t go away after brushing. Dentists rate gum inflammation on a scale from 0 to 3: at the mild end, there’s a slight color change with no bleeding; at the severe end, gums are markedly red, swollen, and may bleed on their own without any contact.
The good news is that gingivitis is fully reversible. The tissue hasn’t been permanently damaged yet, so improved brushing and flossing can return your gums to that firm, pink baseline.
Moderate Gum Disease: Early Periodontitis
When gingivitis goes untreated, it can progress to periodontitis. This is where the visual changes become more dramatic. The gums start pulling away from the teeth, creating visible gaps or pockets along the gumline. Your teeth may look longer than they used to because the gum tissue that once covered the roots has receded. Those small triangles of tissue between teeth may shrink or disappear, leaving dark triangular spaces.
In a healthy mouth, the space between the gum and tooth measures 1 to 3 millimeters. Once pockets deepen past 4 millimeters, periodontitis is likely underway. You can’t measure this yourself, but you can see the effects: the gumline looks uneven, some teeth appear more exposed than others, and food may get trapped in spaces that didn’t exist before. The gum color at this stage is often a deeper red or even purplish, and the tissue feels soft and puffy rather than firm.
Advanced Periodontitis
In the most severe stage, the damage extends below the gumline to the bone that holds your teeth in place. Visually, the recession becomes pronounced. Teeth may look dramatically elongated, and you might notice them shifting position or developing new gaps between them. Teeth can become visibly loose, and the way your upper and lower teeth fit together when you bite down may feel different.
At this stage you may also see pus along the gumline, which appears as a yellowish-white discharge when you press on the gums. Bad breath becomes persistent and harder to mask, and some people report an unpleasant metallic or sour taste in their mouth. The gums themselves may appear dark red or purplish and bleed easily, sometimes spontaneously.
Gum Recession Up Close
Recession is one of the most visible signs of gum disease and deserves a closer look because it varies widely. In mild cases, the gum has pulled back slightly but still covers most of the root surface. The exposed root area may look slightly yellower than the crown of the tooth because root surfaces lack the white enamel coating. In more advanced cases, the recession extends far enough that a significant portion of root is visible, and the bone between teeth has also been lost, creating wider dark spaces.
Recession doesn’t always happen evenly. You might see it on just one or two teeth, particularly on teeth that stick out slightly from the arch or teeth where you’ve brushed too aggressively. The lower front teeth and upper canines are common spots.
Pregnancy-Related Gum Changes
Hormonal shifts during pregnancy can cause a distinctive form of gum inflammation. The gums swell and redden more easily, and some pregnant women develop small, raised growths on the gums called pyogenic granulomas (sometimes called “pregnancy tumors,” though they aren’t cancerous). These look like small, fleshy red or reddish-brown bumps that bleed very easily. They’re often attached by a narrow stalk, can appear smooth or bumpy, and typically show up along the gumline or between teeth. They usually shrink or disappear after delivery.
A Rare but Serious Form
Necrotizing periodontal disease is uncommon but visually distinctive. The triangular gum tissue between teeth develops a cratered, “punched-out” appearance, as if the tips have been scooped away. A grayish-white film often covers the damaged tissue. This form comes on quickly and is accompanied by severe pain, heavy bleeding, and notably foul breath. It’s most often seen in people with weakened immune systems or significant stress and malnutrition, and it requires prompt treatment.
Sensory Signs That Accompany Visual Changes
What you see in the mirror often comes with other signals. Bleeding during brushing or flossing is the earliest and most reliable warning. Persistent bad breath that doesn’t resolve with normal oral hygiene points to bacteria thriving in pockets below the gumline. Some people notice soreness or tenderness when pressing on the gums, pain while chewing, or a lingering bad taste. Sensitivity to hot or cold can increase as roots become exposed through recession. If your teeth feel like they’re shifting or your bite feels different, that suggests the supporting bone has already been affected.
Taken together, the visual and sensory signs form a clear pattern: color shifts from pink to red or purple, texture changes from firm to swollen and shiny, the gumline drops to expose more tooth, and bleeding happens with less and less provocation. Catching these changes early, when the gums are just starting to redden and bleed, gives you the best chance of reversing the damage before it becomes permanent.