Gum recession is extremely common. A 2025 meta-analysis found that about 81% of adults have at least some degree of gum recession (1 millimeter or more), making it one of the most widespread dental conditions. Nearly half of adults (48%) have moderate recession of 3 millimeters or more, and roughly 16% have severe recession of 5 millimeters or greater.
If you’ve noticed your gums pulling back or your teeth looking longer than they used to, you’re far from alone. But “common” doesn’t mean harmless. Understanding why it happens, what it feels like, and when it needs treatment can help you protect your teeth long-term.
How Age Affects Your Risk
Gum recession becomes significantly more prevalent as you get older. In one epidemiological study, about 27% of people aged 15 to 25 had some recession. That number climbed to 42% in the 25 to 35 age group, 66% in the 35 to 45 group, and over 70% in people aged 45 to 60. The increase was statistically significant at every step.
This doesn’t mean recession is just an inevitable part of aging. Years of cumulative wear on gum tissue, combined with a longer window of exposure to risk factors like gum disease and aggressive brushing, explain the steady climb. Younger adults who take care of their gums can significantly slow or prevent the process.
The Most Common Causes
Two broad categories drive most gum recession: bacterial damage and mechanical damage.
Periodontal (gum) disease is the leading cause. When plaque and tartar build up below the gumline, chronic bacterial infection gradually destroys the tissue and bone that support your teeth. Smokers face twice the risk of gum disease compared to nonsmokers, according to the CDC, which also makes them more vulnerable to recession.
Brushing too hard is the other major culprit, and it catches many people off guard. Using a medium or hard-bristled toothbrush, applying too much pressure, or scrubbing back and forth horizontally can physically wear the gum margin down over time. Research on brushing force shows a clear relationship: people who brush with heavier pressure develop more recession, while those who use lighter force tend to have none. The horizontal scrub technique, which is the most commonly used brushing method, is particularly damaging because the repetitive side-to-side motion pushes bristles directly across the gum edge.
Other contributing factors include orthodontic treatment, trauma or injury to the gums, and genetics that leave some people with naturally thinner gum tissue. Orthodontics, however, appears to be a relatively minor risk factor. One study found that only about 6% of teeth showed recession at the end of orthodontic treatment, and while that number rose to around 42% during the retention phase, the severity was limited, with only 7% exceeding 1 millimeter.
What Recession Feels Like
The earliest sign is often visual: a tooth looks slightly longer, or you can see a color change near the gumline where the root surface (which is yellower than enamel) becomes exposed. You might also feel a notch or ledge with your tongue or fingernail where the gum has pulled away.
Tooth sensitivity is the most common symptom that drives people to search for answers. When gums recede, they expose the root surface, which contains thousands of microscopic tubes (dentinal tubules) that lead toward the nerve inside the tooth. Hot, cold, sweet, or acidic foods and drinks cause fluid inside those tubes to shift, which triggers a sharp, brief pain. This is why a sip of ice water or a bite of something sweet can suddenly sting a tooth that never bothered you before. Roughly half of patients who undergo deep cleaning for gum disease experience root sensitivity afterward for the same reason: the cleaning exposes previously covered tubule openings.
What Happens If You Ignore It
Mild recession that stays stable isn’t always an emergency, but recession that progresses creates real problems. Exposed root surfaces are softer than enamel and far more vulnerable to cavities. Root cavities can develop quickly and are harder to treat than cavities on the crown of a tooth.
When recession is driven by untreated gum disease, the underlying bone loss continues even if the gum tissue looks stable on the surface. Over time, teeth lose enough support that they become loose, shift position, or need to be extracted. Recession from aggressive brushing doesn’t carry the same bone-loss risk, but the exposed roots still accumulate decay and sensitivity worsens as more surface is exposed.
Severity and What It Means for Treatment
Dentists classify recession into four categories based on how far the gum has receded and whether the bone between teeth has also been lost. The distinction matters because it determines how well treatment can restore your gumline.
- Class I and II: The gum has pulled back, but the bone and tissue between your teeth are still intact. These cases respond best to treatment, and full coverage of the exposed root is typically achievable.
- Class III: Bone between the teeth has started to deteriorate. Partial root coverage is still possible, but restoring the gumline to its original position is unlikely.
- Class IV: Significant bone loss has occurred. Root coverage procedures generally can’t recover what’s been lost at this stage.
This is why catching recession early makes a meaningful difference in outcomes. The further it progresses, the fewer options remain.
How Recession Is Treated
For recession caused by gum disease, the first step is a deep cleaning (scaling and root planing), where a dentist or hygienist removes bacteria and tartar from below the gumline under local anesthesia. This stops the infection that’s driving the tissue loss. Improving your daily brushing and flossing habits is the other essential piece, since the bacteria return without consistent home care.
When recession is more advanced and root coverage is needed, surgical options come into play. Traditional gum grafting has been the standard for decades. A small piece of tissue, usually taken from the roof of your mouth, is stitched over the exposed root. Recovery takes about two weeks. The first few days involve a soft-food diet and limited physical activity, with swelling and tenderness common for the first one to two weeks. Results are long-lasting and effective, particularly for severe cases.
A newer option called the pinhole surgical technique skips the tissue graft entirely. Instead, a small hole is made in the gum, and existing tissue is gently repositioned to cover the exposed root. Recovery is noticeably faster: most patients report only a day or two of mild discomfort managed with over-the-counter pain relievers. This approach works well for many cases of recession, though traditional grafting may still be the better choice when significant tissue rebuilding is needed.
Preventing Further Recession
If you already have some recession, the goal shifts to keeping it from getting worse. Switch to a soft-bristled toothbrush if you haven’t already, and use gentle, circular motions rather than scrubbing horizontally. Electric toothbrushes with pressure sensors can help if you tend to bear down too hard.
Keeping plaque under control is the single most important factor. Flossing daily and getting professional cleanings on whatever schedule your dentist recommends prevents the bacterial buildup that leads to gum disease. If you smoke, quitting cuts your gum disease risk substantially. And if you notice new sensitivity, longer-looking teeth, or a visible notch at the gumline, getting it evaluated sooner rather than later preserves the widest range of treatment options.