Gum recession happens when the tissue surrounding your teeth pulls back or wears away, exposing more of the tooth or its root. It’s extremely common: about 4 in 10 U.S. adults over 30 have some degree of gum disease, and that number climbs to 60% for adults 65 and older. The tricky part is that recession develops gradually, so you may not notice it until sensitivity or visible changes finally get your attention.
Gum Disease Is the Leading Cause
The most frequent driver of gum recession is periodontal disease, the advanced stage of gum infection. It starts when bacterial plaque builds up along and beneath the gum line. Your immune system responds with inflammation, and if that inflammation becomes chronic, it begins to break down the fibers that anchor your teeth to the jawbone. As bone density decreases and those supporting structures weaken, the gum tissue has nothing to hold onto and starts to shrink away from the tooth.
This process can unfold over months or years without causing pain, which is why many people don’t realize they have gum disease until recession is already visible. Early gum disease (gingivitis) is reversible with better oral care. Once it progresses to periodontitis, the damage to bone and tissue can be managed but not fully undone without professional treatment.
Brushing Too Hard Wears Tissue Away
Not all recession comes from infection. Mechanical abrasion from your own toothbrush is a surprisingly common cause, especially on the side of the mouth controlled by your dominant hand. Using a hard-bristled brush, pressing too firmly, or scrubbing in aggressive back-and-forth motions can physically wear down gum tissue over time. The abrasiveness of your toothpaste can add to the problem.
The recommended technique, called the Modified Bass method, involves holding your brush at an angle so the bristles point toward the gum line, making short gentle strokes, then sweeping from under the gum toward the edge of the tooth. Switching to a soft-bristled brush and easing up on pressure are two of the simplest changes you can make. If you notice more recession on one side of your mouth, your brushing hand is a likely culprit.
Your Genetics Play a Bigger Role Than You’d Think
Some people are simply born with thinner gum tissue, and that makes a real difference. Gum thickness is classified by what dentists call your “biotype.” Thick gum tissue (2 millimeters or more) is more resistant to trauma and recession. Thin tissue (under 1.5 millimeters) tears and recedes more easily, even with good oral hygiene. You can’t change your biotype, but knowing you have thin tissue helps explain why recession might be happening despite doing everything right. It also means you may need to be more careful with brushing pressure and more proactive about professional cleanings.
Teeth Grinding Creates a Chain Reaction
Grinding or clenching your teeth, whether during the day or while you sleep, puts enormous pressure on the structures that support them. That force irritates and loosens the periodontal ligaments (the fibers connecting tooth to bone), which triggers your body to reabsorb jawbone. As bone density drops, gum tissue loses its foundation and begins to recede.
The damage compounds from there. Loose ligaments and reduced bone create small pockets between the teeth and gums where bacteria collect. Those bacteria trigger more inflammation, which leads to more bone loss and further recession. If you wake up with jaw soreness, catch yourself clenching during the day, or notice your teeth feel slightly loose, grinding could be a significant factor. A custom night guard from your dentist can interrupt this cycle by absorbing the force before it reaches your gums and bone.
Hormonal Shifts Increase Vulnerability
Fluctuations in estrogen and progesterone directly affect gum tissue, which is why recession risk changes across different life stages for women. During puberty, rising hormones can cause exaggerated gum inflammation even without much plaque present. Pregnancy increases gum inflammation and can cause temporary tooth mobility. Menopause brings a drop in sex hormones that leads to dry mouth, changes in the bacteria living in your saliva, and accelerated bone loss, all of which worsen periodontal disease and make recession more likely.
These hormonal windows don’t guarantee recession, but they do lower the threshold for damage. Staying on top of dental cleanings during pregnancy and after menopause can help offset the increased vulnerability.
Smoking Accelerates the Damage
Tobacco use is linked to faster gum recession through multiple pathways. It reduces blood flow to gum tissue, impairs your immune response to bacterial infection, and slows healing. Smoking is also associated with higher rates of teeth grinding, which compounds the mechanical damage described above. Reducing or quitting tobacco has a measurable positive effect on both gum disease progression and grinding frequency.
How to Spot Recession Early
The most obvious sign is that your teeth look longer than they used to, because more of the root is exposed. But sensitivity often shows up first. You might notice a zing of pain when drinking something hot or cold, eating sweets, or brushing along the gum line. Dental cleanings may feel more uncomfortable than they used to. Some people feel a notch or ridge near the base of a tooth where tissue has pulled away. Any of these changes are worth mentioning at your next dental visit, because catching recession early gives you far more options for stopping it.
Can Receding Gums Grow Back?
Gum tissue that has been lost to recession does not regenerate on its own. Improving your oral hygiene can stop further damage, but it won’t restore what’s already gone. For that, surgical options exist.
The most common procedure is a gum graft. A connective tissue graft takes a small piece of tissue from beneath the surface of your palate and stitches it over the exposed root. A free gingival graft takes tissue directly from the outer layer of the palate and is typically used to thicken thin gums rather than cover roots. A pedicle graft slides or rotates healthy tissue from an area right next to the recession site, but it only works when there’s enough neighboring tissue to borrow from.
For more extensive damage, dentists may combine grafting with flap surgery to clean deep pockets and guided tissue regeneration to encourage bone and tissue regrowth. People with thick gum tissue tend to get better root coverage and more predictable outcomes from these procedures. Those with thin tissue often need grafts specifically to increase thickness before or during other treatments.
Mild recession that isn’t causing symptoms or progressing may not need surgery at all. In those cases, the priority shifts to preventing further loss through proper brushing, regular cleanings, and addressing any underlying causes like grinding or untreated gum disease.