Receding gums means your gum tissue is pulling away from your teeth, exposing more of the tooth root than normal. It’s one of the most common dental problems in adults, and it gets more common with age: about 30% of adults aged 30 to 44 have some form of gum disease, rising to nearly 60% of those 65 and older. Because recession happens gradually, many people don’t notice it until sensitivity or visible changes prompt a closer look.
What’s Actually Happening in Your Mouth
Your gums are designed to fit snugly around each tooth, covering and protecting the roots. When gums recede, they shrink or pull downward (on upper teeth) or upward (on lower teeth), creating a gap between the tooth and the gum line. This exposes the root surface, which lacks the hard enamel coating that protects the visible crown of your tooth.
Dentists measure recession by looking at the distance between where the enamel ends (a landmark called the cementoenamel junction) and where the gum line currently sits. They use a thin probe to feel for this boundary and measure the gap in millimeters. Even a millimeter or two of recession can be clinically significant, because root surfaces are softer and more vulnerable than enamel.
Why Gums Recede
There’s rarely a single cause. Most recession results from one or more of the following:
- Gum disease (periodontitis): Bacterial infection breaks down the tissue and bone that hold your teeth in place. This is the leading cause of severe recession.
- Brushing too hard: Aggressive scrubbing with a stiff-bristled toothbrush wears away gum tissue over months and years. This is surprisingly common, especially in people who think harder brushing means cleaner teeth.
- Genetics: Some people are born with naturally thin gum tissue, which recedes more easily even with good oral hygiene.
- Tobacco use: Smokers have twice the risk of gum disease compared to nonsmokers. Tobacco weakens the immune system’s ability to fight gum infections and slows healing. The risk increases with both the number of cigarettes smoked and the number of years you’ve smoked.
- Teeth grinding or clenching: Chronic pressure on your teeth can stress the gum line and accelerate tissue breakdown.
How to Recognize It Early
Recession often starts without pain, which is why it goes unnoticed. The earliest sign is usually increased tooth sensitivity, particularly to hot, cold, or sweet foods. This happens because the exposed root contains tiny tubes that lead toward the nerve inside the tooth. When those tubes lose their protective covering, fluid movement inside them triggers sharp, brief pain.
Other signs to watch for: teeth that look longer than they used to, a visible notch or yellowed area near the gum line (root surfaces are darker than enamel), or a feeling that you can “catch” a fingernail where the gum meets the tooth. Some people first notice recession when flossing feels different or when a dentist points it out during a routine exam.
What Happens If You Ignore It
Gum tissue doesn’t grow back on its own. Unlike skin or the lining of your mouth, gum tissue doesn’t regenerate once it’s lost. That makes early detection important, because recession that goes untreated tends to worsen over time.
Exposed roots are highly susceptible to decay because the root surface is softer than enamel and harder to keep clean. As recession progresses, the supporting bone underneath can also deteriorate, leading to loose teeth. In advanced cases, teeth can shift position or eventually fall out. The pockets that form between receding gums and teeth also trap bacteria, creating a cycle where infection drives further tissue loss.
How Recession Is Treated
Treatment depends on how far the recession has progressed. In mild cases, a thorough professional cleaning can remove bacteria from below the gum line and give your gums a chance to stabilize, provided you maintain good brushing and flossing habits afterward.
For more significant recession, especially when roots are exposed, surgical options can restore gum coverage:
- Connective tissue graft: Tissue is taken from beneath the skin on the roof of your mouth and stitched over exposed roots. This is often used for advanced recession with significant root exposure.
- Free gingival graft: A thin piece of tissue is moved directly from the roof of the mouth to the gum line. This works well for areas where the tissue has thinned considerably.
- Pedicle graft: A flap of healthy gum tissue from a neighboring area is repositioned to cover the exposed root. This requires enough thick, healthy tissue nearby to work.
A newer option, the Pinhole Surgical Technique, skips the grafting entirely. A small hole is made in the gum, and specialized instruments gently reposition the existing tissue over the exposed roots. There are no large incisions or sutures, and the cosmetic improvement is visible immediately. Most people return to work the next day, experience mild soreness for a few days, and see full healing within one to three months.
Preventing Further Recession
If you already have some recession, the goal is to stop it from getting worse. If you don’t, prevention is straightforward and centers mostly on how you brush.
Use a soft-bristled toothbrush, always. Medium and hard bristles cause unnecessary abrasion. Angle the brush at 45 degrees toward the gum line and use gentle, circular motions rather than back-and-forth scrubbing. Think of it as polishing your teeth, not scouring them. Brush for two full minutes, twice a day, and floss daily to clear bacteria from areas your brush can’t reach.
If you smoke, quitting makes a measurable difference. Gum treatments work less effectively in smokers, and healing after any procedure is slower. If you grind your teeth at night, a custom mouthguard from your dentist can reduce the pressure on your gum line. And regular dental checkups, typically every six months, catch recession early when it’s easiest to manage.