If your gums look like they’re pulling away from your teeth or shifting position, what you’re likely seeing is gum recession. It’s one of the most common dental problems in adults, affecting about 42% of Americans over age 30 and nearly 60% of those over 65. The gum tissue gradually migrates downward (or upward on upper teeth), exposing more of the tooth surface and sometimes the root underneath. This process can happen so slowly you don’t notice it for years, or it can seem to appear suddenly once it reaches a visible threshold.
What’s Actually Happening to Your Gums
Your gums are anchored to your teeth and jawbone by a network of connective tissue fibers and a thin ligament. When something damages or weakens that attachment, the gum tissue loses its grip and starts to creep away from the tooth. In bacterial gum disease, the process works like this: harmful bacteria colonize the space between your gum and tooth, forming deeper and deeper pockets. Your immune system responds with inflammation to fight the infection, but the inflammatory chemicals it releases also break down the very fibers and bone holding your gums in place. It’s essentially friendly fire.
As the connective tissue dissolves and bone recedes, the gum has nothing left to cling to, so it migrates. Once this attachment is lost, it doesn’t grow back on its own. That’s what makes gum recession different from temporary swelling or irritation: it represents permanent structural change unless treated.
The Most Common Causes
Gum disease is the leading cause, but it’s far from the only one. Several factors can make your gums move, and more than one is often at work simultaneously.
- Periodontal disease. Bacterial infection destroys the bone and tissue supporting your teeth. This is the most serious cause because it progresses if untreated.
- Brushing too hard. Years of aggressive scrubbing can physically wear away gum tissue, especially along the gumline. This type of recession often shows up on the side of your mouth opposite your dominant hand, where you tend to apply more pressure. It frequently appears alongside worn enamel near the gumline.
- Genetics. Some people are born with naturally thinner gum tissue, which is more vulnerable to recession regardless of how well they care for their teeth.
- Teeth grinding (bruxism). The excessive force from clenching or grinding puts constant stress on the ligament fibers near the top of the bone, which can trigger bone loss and cause gums to pull back.
- Misaligned teeth. A tooth that sits outside the natural arch of your jaw may have thinner bone and tissue on one side, making recession more likely in that spot.
- Tobacco use. Smoking and chewing tobacco both increase recession risk by reducing blood flow to gum tissue and promoting plaque buildup.
- Lip or tongue piercings. Metal jewelry that repeatedly rubs against the gums can erode tissue over time.
- Previous dental work. Ironically, some periodontal treatments, including deep cleanings on shallow pockets, can themselves contribute to a small amount of recession as swollen tissue shrinks back during healing.
Signs You Might Notice First
The earliest clue is often sensitivity. When gum tissue pulls back, it exposes the root surface, which doesn’t have the same protective enamel layer as the crown of your tooth. Hot coffee, cold water, or even breathing in cold air can trigger a sharp zing. You might also notice that your teeth look longer than they used to, or that you can see a yellowish area near the gumline where root surface is showing. Some people feel a small notch or ledge with their fingernail right where the gum meets the tooth.
Bleeding when you brush or floss is a sign of gum inflammation, which often precedes or accompanies recession. If your gums bleed regularly, that’s your body signaling an active immune response to bacteria along the gumline.
How Dentists Measure the Problem
During a dental exam, a small probe is slid gently between your gum and tooth to measure pocket depth in millimeters. Healthy gums fit tightly against the tooth with pockets of 1 to 3 millimeters. Pockets of 4 to 5 millimeters indicate moderate gum disease. Anything 6 millimeters or deeper is classified as severe. These measurements, combined with X-rays showing bone levels, tell your dentist exactly how much attachment has been lost and how far the disease has progressed.
Why It Matters Beyond Your Mouth
Gum disease isn’t just a dental issue. The chronic inflammation involved has well-documented links to other serious health conditions. Periodontal disease increases the risk of cardiovascular disease by about 19% overall, and that figure rises to 44% in people 65 and older. The relationship with diabetes is particularly striking: the two conditions fuel each other in a vicious cycle. Diabetes makes gum disease worse by amplifying the inflammatory response, and the ongoing gum infection worsens blood sugar control by increasing insulin resistance. People with type 2 diabetes and severe gum disease have 3.2 times the mortality risk from heart disease compared to those with healthy or mildly affected gums.
The encouraging flip side is that treating gum disease improves blood sugar control in people with type 2 diabetes. Research has shown the benefit is comparable to adding an additional diabetes medication.
How Recession Is Treated
Treatment depends on how far the recession has progressed and what’s causing it.
For mild cases driven by brushing technique, switching to a soft-bristled toothbrush and using gentler, circular strokes can stop further damage. Your dentist may apply a desensitizing agent or bonding material to protect exposed root surfaces. If gum disease is the culprit, a deep cleaning (scaling and root planing) removes bacteria and tartar from below the gumline, giving the tissue a chance to reattach. This works best when pockets haven’t yet exceeded about 3 millimeters in depth. At deeper pocket measurements, the procedure becomes less effective and can sometimes cause additional attachment loss.
For moderate to severe recession, surgical options become more relevant. The gold standard for covering exposed roots is a procedure that takes a small piece of tissue from the roof of your mouth and grafts it over the recession site. This approach achieves roughly 80% root coverage on average. Another technique focuses on building up the band of firm, protective tissue near the gumline even if it doesn’t fully cover the root. Soft tissue grafting is one of the most commonly performed periodontal surgeries in the U.S., with periodontists averaging over 100 of these procedures per year.
If grinding is contributing to your recession, a nightguard can reduce the mechanical stress on your teeth and supporting structures. For misaligned teeth, orthodontic treatment can reposition teeth into better alignment with the bone, though moving teeth too aggressively can itself cause recession, so this requires careful planning.
Preventing Further Recession
You can’t regrow lost gum tissue naturally, but you can stop the process from getting worse. Brush twice a day with a soft-bristled brush, using light pressure. If you tend to scrub hard, an electric toothbrush with a pressure sensor can help retrain your hand. Floss daily to disrupt bacterial colonies between teeth before they can migrate below the gumline. Quit smoking if you use tobacco, as it’s one of the strongest modifiable risk factors for progressive gum disease.
Regular dental cleanings, typically every six months, remove tartar that home care can’t reach. If you already have gum disease, your dentist may recommend cleanings every three to four months to keep bacterial levels in check. Catching pocket depth changes early, before bone loss becomes significant, is the single most effective way to keep your gums where they belong.