Gum recession: a common oral health issue that often goes unnoticed

We spend a lot of time thinking about our hearts, our brains, our muscles, and our metabolic health. Oral health tends to get a narrower slot: brush twice a day, floss, see the dentist every six months, done. And if nothing hurts or looks obviously wrong, it’s easy to assume the system is working.

The problem is that some oral health problems can develop quietly for years, before they cause pain or become obvious in the mirror. Roughly half of U.S. adults are walking around with a dental condition many have probably never considered—not because it is rare or exotic, but because it is often silent in its early stages.

Gum recession occurs when the gum margin moves away from the crown of the tooth, exposing more of the tooth and, in some cases, part of the root. Estimates suggest that about 50% of U.S. adults ages 18 to 64, and 88% of adults 65 and older, have at least one site of gingival recession.¹ 

Recession is often treated as a cosmetic issue because affected teeth can appear longer or the gumline can become uneven. But the functional consequences matter more. The exposed root lacks the enamel that protects the crown of the tooth, making it more susceptible to sensitivity, wear, and root cavities. When recession is caused by periodontitis, it may also signal loss of the bone and connective tissue supporting the tooth.

The reason to catch recession early is that once gum tissue has moved away from the tooth, it does not grow back. We can slow or halt its progression, but no non-invasive treatment will bring the tissue back. When recession is sufficiently advanced, the only real option is surgical intervention to cover the exposed root. Left alone, recession often slowly advances, which is why early identification matters.² 

Knowing where you stand

Because early recession is often difficult to spot on your own, the first step is simply finding out whether you have it—and whether it is changing over time. Moderate recession may be obvious: one tooth looks longer than the others, the gumline appears uneven, or a yellowish section of root is visible beneath the whiter enamel. Earlier stages are much harder to catch without a dental exam.

At your next visit, ask your dentist three questions:

• Do I have any gum recession?
• Has it changed since my last visit?
• What do you think is causing it in my case?

The second question matters because a small area of recession that has remained stable for years may need nothing more than monitoring, while a site that is steadily progressing deserves more attention. The third matters because identifying recession is only the beginning; the next step is understanding what is driving it.

The answer is not always poor oral hygiene—and in some cases, the way someone brushes may be part of the problem.

Not just an oral hygiene problem 

When most of us hear “dental problem,” we assume the answer is to brush more.

Sometimes it is. If plaque builds up along the gumline, it can trigger inflammation and periodontal disease, both of which can contribute to recession. But gum recession is unusual because the opposite mistake can cause trouble too: brushing with too much force or using a technique that repeatedly damages the gumline. In fact, one study found that plaque buildup and faulty brushing were the two most common risk factors among people with gum recession.³

In other words, recession can result from doing too little—or from trying a little too hard.

“Aggressive brushing” does not just mean bearing down on the handle. It can also mean forcefully scrubbing back and forth across the gumline, using stiff bristles, brushing excessively, or repeatedly snapping floss into the gums. Over time, mechanical stress can wear away at the delicate gum tissue, while the use of abrasive toothpaste can compound the problem by further wearing down the tooth surface. 

Brushing technique is only part of the story. Some people simply start with less room for error. Gum tissue varies in thickness, and the amount of bone covering the root depends partly on anatomy and tooth position. A tooth sitting near the outer edge of the jaw may have very little bone and gum over its root, making the area more vulnerable to inflammation, tooth movement, and repeated mechanical stress. Previous orthodontic treatment or a tight frenum may add to that vulnerability in some people, depending on their anatomy.

Periodontitis, smoking, and heavy alcohol consumption are other important contributors, while clenching or grinding may worsen an already vulnerable situation.

For most people, recession is not the result of one isolated mistake—it is more likely to reflect a stack of influences. That is why the most useful next step, once recession has been identified, is not to guess which product to buy, but to work with your dentist to determine what is most likely driving it and address the contributors you can control.

Brush smarter, not harder

For many people, the highest-yield change will be improving how they brush. The goal is not to avoid the gumline. Plaque collects there, and leaving it alone will create a different set of problems. The goal is to clean it consistently without applying unnecessary force. Because we brush every day, some simple habits can add up: 

• Check your bristles. If they become flattened or splayed soon after you start using a new toothbrush, you are probably pressing too hard.
• Use a soft-bristled brush. Medium and hard bristles are rarely necessary for routine home care.
• Avoid sawing across the gumline. Use small, controlled movements rather than forceful horizontal scrubbing.
• Let an electric brush do the work. Do not press and drag it as though it were a manual brush. A built-in pressure sensor can provide useful feedback if you have trouble judging force.
• Be gentle between the teeth. Guide floss through the contact point and curve it around each tooth instead of snapping it into the gums. 
• Ask your hygienist or dentist to watch you brush. They can provide feedback based on your anatomy and concerns. 

If you already have exposed roots or sensitivity, toothpaste selection also matters. Relative Dentin Abrasivity, or RDA, describes how abrasive a toothpaste is to dentin. As a general rule, “whitening” toothpastes tend to be more abrasive, while “sensitive” options are less abrasive, though there are exceptions. Check your toothpaste’s RDA online or ask your dentist for recommendations. Toothpastes with RDA values of 0–70 are considered minimally abrasive and may be a good option if you have existing gum recession or sensitivity.⁴ If you use mouthwash, alcohol-free options may be preferred because alcohol can dry the gums and increase risk of inflammation. 

None of these measures can reverse gum recession that has already occurred. Toothpaste, mouthwash, and fluoride may reduce sensitivity and help protect exposed roots, but they do not rebuild lost gum tissue. The same is true of the various red-light devices, gum massagers, serums, collagen supplements, and herbal rinses marketed for “gum regrowth.” Some may improve symptoms or slow progression, but there is no good evidence that they can restore a receded gumline without surgery.

The bottom line

Gum recession is not always preventable, and it is not always caused by poor hygiene. Anatomy, tissue thickness, tooth position, inflammation, smoking, alcohol use, and prior orthodontic treatment can all influence risk.

But brushing technique is one of the easiest things to change.

The solution is not to brush less or avoid the gumline. It is to remove plaque consistently without applying unnecessary force. In oral care, more effort is not always better; better technique is. And once gum tissue has been lost, the priority shifts from prevention to preservation—making the way you brush today an investment in keeping your teeth healthy for decades to come.

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