Receding gums happen when your gum tissue gradually pulls away from your teeth, exposing the root surfaces underneath. It’s one of the most common dental problems in adults, and it gets more common with age: nearly 60% of adults 65 and older have some form of periodontal disease, which is one of the primary drivers of recession. The process is slow enough that many people don’t notice it until a tooth looks longer than it used to or a sharp zing of sensitivity catches them off guard while drinking something cold.
What Happens Inside Your Gums
Your teeth are anchored by bone and wrapped in a collar of firm gum tissue that seals the root away from bacteria, food, and temperature changes. When recession starts, the underlying bone that supports the gum begins to shrink. Once bone is lost, the soft tissue above it follows, migrating downward (on upper teeth) or upward (on lower teeth) and pulling away from the natural boundary where enamel meets root. That boundary, visible as a subtle ridge on the tooth, is the line your gums are supposed to hug. When they drop below it, the softer, more sensitive root surface is left open to the mouth.
Unlike skin, gum tissue does not regenerate on its own. Once it recedes, it stays receded unless a dental professional intervenes. This is the single most important thing to understand about the condition: it can be slowed, stopped, or surgically corrected, but it will not reverse itself naturally.
How to Spot Recession Early
The earliest sign is often not visual but sensory. Because exposed root surfaces lack the hard enamel shield that covers the crown of a tooth, they transmit temperature and pressure much more directly to the nerve inside. A sudden sensitivity to cold drinks, hot soup, or even cold air through the mouth can be the first clue.
Visually, you might notice that one tooth looks slightly longer than its neighbors, or you can feel a small notch or ledge with your fingernail right at the gum line. The color of the tooth can also change near the base: root surfaces tend to be darker or more yellow than enamel, so a stripe of discoloration close to the gum is another sign. In more advanced cases, the spaces between teeth near the gum line widen, creating dark triangles that trap food.
Why Gums Recede
There is rarely a single cause. Most cases involve a combination of factors working together over years.
- Gum disease (periodontitis): Bacterial infection beneath the gum line triggers chronic inflammation, which slowly destroys the bone and tissue holding teeth in place. This is the most common cause of significant recession. About 46% of adults between 45 and 64 have some degree of periodontitis.
- Aggressive brushing: Scrubbing hard with a stiff-bristled brush, especially in a side-to-side motion, can physically wear gum tissue away over time. A three-year clinical study found that it’s the force and technique, not the amount of brushing, that drives recession. Brushing twice daily for two minutes with proper technique showed no harmful effect on gums and may actually help stabilize them.
- Genetics: Some people inherit thinner gum tissue or a jawbone shape that provides less support. If your parents had recession, your risk is higher regardless of how well you brush.
- Tobacco use: Smoking or chewing tobacco restricts blood flow to gum tissue, accelerates bone loss, and makes gums less able to repair everyday damage.
- Tooth position and bite: A tooth that sits outside the arch, or teeth that are crowded or rotated, can have thinner bone on one side. That thin bone is more vulnerable to loss, and the gum follows.
- Clenching and grinding: Chronic pressure on teeth, particularly at night, places excessive force on the bone and can accelerate its breakdown around specific teeth.
How Dentists Assess Severity
During a dental exam, a small probe is slid gently between the gum and tooth to measure two things: how far the gum has pulled away from its original position (the recession measurement) and whether a pocket has formed between the gum and the root (the pocket depth). These are related but different problems. Recession means the gum has moved down the root visibly. A pocket means the gum has detached from the root below the surface, creating a hidden space where bacteria thrive. You can have one without the other, or both at once.
Dentists classify recession into categories based on how far it extends and whether the tissue between teeth has also been lost. In milder cases, the recession stays above a key anatomical boundary on the gum and the tissue between teeth remains intact, which makes treatment more predictable. In more advanced cases, bone and tissue between teeth have broken down as well, which limits how much coverage a surgical procedure can restore.
Treatment Options
Nonsurgical Approaches
If the recession is mild and not progressing quickly, the first step is usually addressing whatever is causing it. That might mean switching to a soft-bristled brush, learning a gentler brushing technique, getting a night guard for grinding, or undergoing a deep cleaning to manage gum disease. Desensitizing toothpaste or professionally applied coatings can reduce root sensitivity without any procedure. For small areas of recession, a tooth-colored filling material can be bonded over the exposed root to protect it and reduce sensitivity.
Gum Grafting
When recession is more significant, surgical grafting is the most reliable way to cover exposed roots. The gold standard is a connective tissue graft: a thin piece of tissue is taken from the roof of your mouth (or occasionally from a tissue bank) and placed over the exposed root, then secured under the surrounding gum. This approach achieves roughly 80% root coverage on average, and in many cases full coverage is possible.
A different type, the free gingival graft, is used when the goal is to thicken the band of firm gum tissue rather than cover the root itself. This is common on lower front teeth where the tissue is naturally thin. The grafted tissue creates a stronger barrier against further recession.
Recovery from gum grafting typically involves a week or two of soreness at both the graft site and the roof of the mouth, with a soft diet for the first several days. Most people return to normal eating within two to three weeks, though the graft continues to mature and blend with surrounding tissue over several months.
Preventing Further Recession
Prevention comes down to reducing the mechanical and bacterial forces that break down gum tissue. Use a soft-bristled toothbrush, whether manual or powered, and brush for two minutes twice a day with gentle pressure. If you tend to press hard, an electric toothbrush with a built-in pressure sensor can help you recalibrate. A three-year randomized study found that both manual and power toothbrushes, when used properly, posed no risk to gums and were associated with sustained reductions in recession over time. The researchers noted that simply paying closer attention to brushing habits led to gentler technique, which may have driven the improvement.
Flossing or using interdental brushes daily clears bacteria from the spaces a toothbrush can’t reach, which is where gum disease often starts. If you smoke, quitting removes one of the strongest risk factors for both gum disease and recession. And regular dental cleanings, typically every six months, catch early signs of recession or pocketing before they progress to a point that requires surgery.