Gum recession shows up as a gradual pulling back of gum tissue from the teeth, exposing more of the tooth surface or even the root underneath. It’s common enough that nearly 30% of adults aged 30 to 44 have some degree of gum disease, and that number climbs to almost 60% by age 65. The tricky part is that recession often happens so slowly you don’t notice it until sensitivity or visible changes finally get your attention.
What Gum Recession Looks Like
The most obvious visual sign is teeth that look longer than they used to. Your teeth aren’t actually growing. Instead, the gum tissue is creeping upward (on top teeth) or downward (on bottom teeth), revealing parts of the tooth that were previously hidden. If you smile in front of a mirror and compare one tooth to its neighbors, a receding tooth will appear noticeably taller.
You may also see a color change near the gum line. The exposed root surface is typically darker or more yellow than the enamel-covered crown of the tooth, creating a visible line where the two meet. This happens because roots are covered in a material called cementum rather than enamel, and cementum has a naturally darker tone. In some cases, you can spot a small notch or ledge right where the gum meets the tooth, almost like a step carved into the surface.
Redness, swelling, or puffiness along the gum line can also signal trouble, even before you see obvious recession. Gum disease typically starts with swollen, red, tender gums that bleed easily when you brush or floss. These early inflammatory signs are worth paying attention to, because they often precede the tissue loss that leads to visible recession.
How It Feels Before You See It
Sensitivity is frequently the first clue. A sharp zing when you sip ice water, eat something hot, or bite into something sweet can mean your tooth roots are partially exposed. Roots lack the thick enamel shield that protects the crown of the tooth, so temperature and sugar reach the nerve more easily. If you notice that sensitivity is limited to one or two teeth rather than spread across your whole mouth, localized recession is a likely explanation.
Tenderness along the gum line is another early signal. You might feel soreness when brushing a specific area, or notice a small amount of blood on your toothbrush or floss. Occasional minor bleeding during flossing can be normal if you’ve been inconsistent with your routine, but persistent bleeding in the same spot suggests the tissue there is inflamed and potentially pulling away from the tooth.
A Simple Self-Check You Can Do at Home
You can’t replicate a dental exam, but a quick self-assessment can help you spot potential recession early. Start by standing in front of a well-lit mirror with clean, dry teeth. Gently pull your lip or cheek away so you can see where your gums meet each tooth, both front and back.
Look for any teeth that appear longer than their neighbors, any areas where the gum line seems uneven, or spots where you can see a yellowish root surface peeking out below the pink gum tissue. Then run a clean fingertip or your tongue along the gum line. If you feel small notches, grooves, or indentations where the gum meets the tooth, that can indicate recession has already started.
Taking a close-up photo of your gum line every few months gives you a visual record to compare over time. Recession progresses slowly, often over years, so changes that are invisible day-to-day become obvious when you compare photos from six or twelve months apart. Focus especially on the lower front teeth and the outer surfaces of the upper molars, since these are the most common sites for recession.
What Causes Gums to Recede
There are two broad categories: mechanical damage and bacterial disease. They look and feel slightly different, which can help you figure out what’s going on.
Mechanical recession is caused by physical force on the gum tissue. The most common culprit is aggressive brushing, especially with a hard-bristled toothbrush. This type of recession tends to appear on the outer (cheek-side) surfaces of teeth, often on the side of your dominant hand where you naturally press harder. The surrounding gum tissue usually looks pink and healthy, not red or inflamed. You may also notice wedge-shaped grooves worn into the tooth near the gum line.
Disease-driven recession comes from bacterial infection in the gums, known as periodontitis. Plaque and tartar buildup triggers chronic inflammation that gradually destroys the tissue and bone supporting your teeth. This type of recession is more likely to affect multiple teeth, often appears between teeth as well as on the outer surfaces, and is typically accompanied by redness, swelling, bleeding, and sometimes bad breath. Smoking, diabetes, genetics, and hormonal changes all increase the risk.
Other causes include grinding or clenching your teeth (which puts excessive lateral force on the gum tissue), misaligned teeth that create uneven pressure, lip or tongue piercings that rub against the gums, and orthodontic treatment that moves teeth outside the natural bone envelope.
How Dentists Measure Recession
During a periodontal exam, your dentist or hygienist uses a thin, blunt-tipped instrument called a periodontal probe to measure the space between your gums and teeth. They’re looking at two key numbers: pocket depth (the distance from the top of the gum to the bottom of the pocket around the tooth) and clinical attachment loss (the distance from a fixed reference point on the tooth to the bottom of the pocket).
Healthy gums have pocket depths of 1 to 3 millimeters. Pockets measuring 4 to 5 millimeters suggest moderate disease, and anything 6 millimeters or deeper indicates severe periodontitis. Clinical attachment loss is considered the more reliable measurement because it accounts for how far the gum has actually moved from its original position, not just how deep the current pocket is.
Dentists classify recession into several stages based on how far the tissue has pulled back and whether the bone between teeth is also affected. In early stages, the gum has receded but the tissue and bone between neighboring teeth remain intact, which means the damage is often fully reversible with grafting. In advanced stages, bone loss between the teeth has occurred, making full coverage much harder or impossible to achieve.
What Happens if You Ignore It
Recession doesn’t reverse on its own. Once gum tissue pulls away from a tooth, it stays that way unless treated. Left unchecked, the exposed root surface is vulnerable to decay (root cavities form faster than cavities on enamel because cementum is softer), increased sensitivity that can make eating and drinking uncomfortable, and progressive bone loss that eventually loosens the tooth.
The pace varies. Recession caused by aggressive brushing may stabilize once you switch to a soft-bristled brush and lighter pressure. Recession driven by active gum disease will continue to worsen as long as the infection goes untreated.
Treatment Options by Severity
For mild recession with no symptoms, treatment may simply involve monitoring and adjusting your brushing technique. Switching to a soft-bristled or electric toothbrush and using a desensitizing toothpaste containing ingredients like potassium nitrate or stannous fluoride can calm nerve sensitivity in exposed roots.
Moderate recession, especially when sensitivity is significant or the appearance bothers you, is typically addressed with a gum graft. A periodontist takes a small piece of tissue, often from the roof of your mouth, and attaches it over the exposed root. Recovery takes one to two weeks for the donor site and a few weeks for the graft to fully integrate. Success rates for covering exposed roots are high when the bone between teeth is still intact.
When recession is driven by gum disease, the underlying infection needs to be controlled first. This usually involves a deep cleaning (scaling and root planing) to remove tartar and bacteria below the gum line. For advanced cases with significant bone loss, surgical options exist to clean deeper pockets and sometimes regenerate lost bone, though the results depend heavily on how much structural support remains.
If you’re noticing any combination of longer-looking teeth, sensitivity to temperature, bleeding when brushing, or visible notches at the gum line, those are signs worth acting on sooner rather than later. Early recession is far simpler and less expensive to treat than advanced cases where bone loss has set in.