Gums recede when the tissue surrounding your teeth wears away or pulls back, exposing more of the tooth or even its root. It happens gradually, often without pain, which is why many people don’t notice it until the damage is well advanced. About 42% of American adults over 30 have some form of periodontal disease, and that number climbs to nearly 60% by age 65. Recession is one of the most common consequences.
There’s rarely a single cause. Gum recession usually results from a combination of factors, some within your control and some not.
Gum Disease Is the Leading Cause
Bacterial infection of the gums, known as periodontal disease, is the most common reason gums recede. It starts when plaque builds up along and below the gumline. Your immune system responds with inflammation, and over time that chronic inflammation breaks down the bone and connective tissue that hold your teeth in place. As the bone recedes, the gum tissue follows.
The tricky part is that early gum disease (gingivitis) is painless. You might notice occasional bleeding when you brush or floss, but it’s easy to dismiss. Left untreated, gingivitis progresses to periodontitis, where the damage to bone and tissue becomes irreversible. At that point, recession is often visible and ongoing.
Brushing Too Hard Wears Tissue Away
It sounds counterintuitive, but being too thorough with your toothbrush can cause the very problem you’re trying to prevent. Brushing too hard, too often, or for too long physically abrades gum tissue. Medium or hard bristles make the problem worse. Over months and years, this mechanical trauma gradually strips tissue from the tooth surface, especially along the outer (cheek-side) surfaces of teeth where brushing pressure tends to be highest.
If you notice that your recession is worse on the side of your mouth opposite your dominant hand (where you tend to apply more force), overbrushing is a likely contributor. Switching to a soft-bristled brush and using gentle, short strokes can stop further damage. Electric toothbrushes with built-in pressure sensors are particularly useful because they alert you when you’re pressing too hard.
Some People Are Built for Recession
Not everyone’s gum tissue is the same thickness. Gum tissue thinner than about 1 millimeter is classified as a “thin biotype,” and people with this tissue type experience significantly more recession than those with thicker gums. Multiple studies confirm that individuals with narrow, thin gum tissue are more prone to recession regardless of how well they care for their teeth.
Tooth position matters too. Teeth that sit slightly outside the arch, whether naturally or from orthodontic movement, have thinner bone on the outer side. That thin bone is more vulnerable to resorption, and once it’s gone, the gum tissue on top of it has nothing to cling to. This is why recession commonly appears on prominent canine teeth or teeth that were crowded before braces.
Teeth Grinding and Clenching
Bruxism, the habit of grinding or clenching your teeth (often during sleep), places enormous repetitive force on teeth and the structures supporting them. That pressure strains the periodontal ligament, which anchors each tooth to the surrounding bone. Over time, the micro-injuries accumulate faster than the tissue can repair itself. The bone weakens, loses density, and the gums follow it downward.
Many people who grind their teeth don’t realize they do it. Signs include jaw soreness in the morning, worn-down tooth surfaces, and headaches near the temples. A night guard won’t reverse existing recession, but it can prevent the ongoing damage that makes it worse.
Tobacco Use Hides the Problem
Smoking and other tobacco use damage gums in a particularly deceptive way. Chronic tobacco exposure causes long-term changes to the tiny blood vessels in your gum tissue. The capillaries narrow, blood flow decreases, and the tissue’s ability to fight infection and heal itself drops substantially. At the same time, that reduced blood flow means your gums bleed less, even when disease is actively progressing. Bleeding gums are one of the earliest warning signs of periodontal disease, so smokers often miss the signal entirely.
Tobacco also suppresses the local immune response in your mouth, allowing harmful bacteria to thrive with less resistance. The combination of impaired healing, reduced blood flow, and masked symptoms means that by the time a smoker notices recession, the underlying damage is often more advanced than it would be in a nonsmoker. Research suggests that this microvascular damage may not be completely reversible even after quitting, though stopping tobacco use still slows further progression.
Hormonal Changes Affect Gum Tissue
Fluctuations in estrogen and progesterone directly influence gum health. During pregnancy, surging hormone levels amplify the inflammatory response to plaque, making gums swollen, tender, and more vulnerable to damage. This is common enough to have its own name: pregnancy gingivitis.
Menopause creates the opposite problem. Declining estrogen leads to thinning of gum tissue, impaired collagen production, and loss of bone density in the jaw. Postmenopausal women show greater attachment loss between teeth and gums and more alveolar bone resorption. The combination of thinner tissue and weaker bone creates conditions where recession can accelerate, particularly if periodontal disease is already present.
Other Contributing Factors
Misaligned teeth create uneven forces during chewing, which can concentrate stress on certain teeth and accelerate bone loss in those areas. Lip or tongue piercings that rub against the gums cause localized mechanical damage similar to aggressive brushing. Even habits like holding pins, nails, or other objects between your teeth can wear tissue in specific spots over time.
How Recession Is Treated
Mild recession doesn’t always require treatment. If the cause is identified and corrected early (switching to a softer brush, treating gum disease, wearing a night guard), the recession may stabilize on its own. Gums won’t grow back, but stopping further loss is often enough.
When recession is more advanced, exposing the root or causing sensitivity, surgical options can restore coverage. Traditional gum grafting takes tissue from the roof of your mouth and stitches it over the exposed area. Recovery typically takes one to two weeks, and the procedure has a long track record of success. A newer alternative, the pinhole surgical technique, skips the grafting entirely. Instead, a small pinhole is made in the gum tissue, and instruments gently reposition the existing tissue to cover the exposed root. Collagen strips hold things in place while healing occurs. Because there are no incisions or sutures, most people return to normal activities within a day or two.
Both approaches are effective. The right choice depends on how many teeth are affected, how severe the recession is, and the thickness of your remaining tissue.
Preventing Further Recession
The most effective prevention targets the most common causes. Use a soft-bristled toothbrush and let the bristles do the work rather than pressing hard. Angle the brush at 45 degrees toward the gumline with short, gentle strokes. Floss daily to remove plaque from areas your brush can’t reach, since untreated plaque is the starting point for gum disease.
If you grind your teeth, a custom night guard from your dentist distributes the force more evenly and protects the bone and tissue from repetitive trauma. Quitting tobacco, even late, reduces the ongoing vascular damage that makes gums vulnerable. And regular dental cleanings, typically every six months, catch early gum disease before it progresses to the point where recession becomes inevitable.