Why Gums Pull Back, and Whether They Grow Back

What causes gums to recede?

Gum recession has two dominant causes: periodontal disease — a bacterial infection that destroys the gum tissue and bone anchoring the teeth — and mechanical wear, most often years of aggressive brushing 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option.. The two look similar at the gumline and behave completely differently underneath it, which is why finding your cause matters more than finding a product.

A dentist's exam also weighs contributors: tobacco use, a tooth that sits prominently toward the outside of the jaw, naturally thin gum tissue, grinding and clenching, an oral piercing that rubs, and orthodontic movement that has pushed a tooth to the edge of its bony housing. None of these usually acts alone — they lower the tissue's margin for error while disease or abrasion does the visible damage.

Mechanically, recession is the gum margin migrating down the tooth until part of the root surface is exposed 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option.. Root surfaces are not covered in enamel, so the consequences follow predictably: sensitivity to cold, vulnerability to decay along the gumline, and the longer-toothed look people notice in the mirror before they notice anything else.

The rest of this guide takes the causes one at a time, then turns to the question everyone actually has — whether any of it grows back — and to the ladder of treatments, from a change of brush to a graft.

How does gum disease pull the gumline down?

Periodontal disease is a bacterial infection of the tissues that hold teeth in place 2Ref 2National Institute of Dental and Craniofacial Research (2024).Periodontal (Gum) Disease.What periodontal disease is — a bacterial infection of the tissues holding teeth in place — its progression from gingivitis, its symptoms, and the general goals of treatment.. It starts as gingivitis — plaque bacteria inflaming the gum margin, which swells and bleeds easily — and can progress to periodontitis, where the infection destroys the fibers and bone that anchor the tooth 2Ref 2National Institute of Dental and Craniofacial Research (2024).Periodontal (Gum) Disease.What periodontal disease is — a bacterial infection of the tissues holding teeth in place — its progression from gingivitis, its symptoms, and the general goals of treatment.. As that support is lost, the gum riding on top of it comes down with it. Recession from periodontitis is the visible edge of a structural problem underneath.

This is not a rare disease. National survey data put periodontal disease at roughly 42 to 47 percent of US adults aged 30 and older 3Ref 3National Institute of Dental and Craniofacial Research (2024).Periodontal Disease in Adults (Age 30 or Older).The prevalence of periodontal disease among US adults aged 30 and older, roughly 42 to 47 percent., and because it is often painless for years, recession or bleeding while brushing is frequently the first sign anyone notices.

The tell that distinguishes disease-driven recession is company: red or swollen gums, bleeding at a touch, persistent bad breath, tenderness, and in later stages teeth that feel loose or have drifted. Recession from brushing wear tends to arrive alone, on otherwise firm, pink tissue.

A dentist tells the two apart the unglamorous way — with a small probe that measures the pocket depth around every tooth. That is why the answer to what is causing your recession comes from an exam, not a mirror, and why the treatment paths that follow diverge so sharply.

Can brushing too hard really wear the gums away?

Yes — aggressive brushing is one of the classic causes of gum recession 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option.. Gum tissue tolerates decades of gentle cleaning, but a firm-bristled brush driven with force, in long horizontal strokes, wears at the gum margin the way a shoe wears at a heel. It is a slow injury, which is what makes it easy to miss: nothing hurts, nothing bleeds, and the gumline simply sits a little lower each year.

The pattern often gives it away. Wear-driven recession favors the outside surfaces of the teeth — the ones easiest to press on — and often shows more on one side of the mouth, the side a dominant hand reaches first. The surrounding tissue looks healthy: pink, firm, just lower than it should be.

The fix is technique, not effort. Clinicians generally advise a soft-bristled brush held with a light grip, angled toward the gumline, and moved in small circles rather than scrubbing strokes; an electric brush with a pressure sensor makes the feedback automatic. The relationship between brushing and recession — including how to tell abrasion damage from disease — is covered in more depth in its own guide.

What no technique change can do is restore what has already worn away. Gentler brushing stops the trend line, and stopping the trend line is the realistic goal.

Why do receding gums make teeth sensitive?

Exposed roots ache because the root surface is not built for the open air. Beneath the gum, roots are covered in dentin, a tissue threaded with microscopic tubules that lead toward the nerve; once recession exposes them, cold, heat, sweets, and even a breath of air can transmit straight through 4Ref 4American Dental Association (2024).Sensitive Teeth - Heat and Cold Sensitivity.That exposed roots from gum recession cause sensitivity via dentin tubules transmitting stimuli to the nerve, and that decay, fractures, worn fillings, gum disease, and worn enamel can produce the same symptom.. That electric jolt with iced water is one of the most common ways people discover their gums have receded at all.

Sensitivity from recession has plenty of look-alikes. Decay, a fractured tooth, worn fillings, gum disease, and worn enamel can all produce the same signal 4Ref 4American Dental Association (2024).Sensitive Teeth - Heat and Cold Sensitivity.That exposed roots from gum recession cause sensitivity via dentin tubules transmitting stimuli to the nerve, and that decay, fractures, worn fillings, gum disease, and worn enamel can produce the same symptom., so a new sensitivity deserves an exam rather than an assumption.

When exposed dentin is the cause, management is usually simple and non-surgical: desensitizing toothpastes work by calming the nerve's response or blocking the open tubules, and a dentist can apply fluoride in the office to strengthen the exposed surface 5Ref 5American Dental Association (JADA For the Patient) (2014).Preventing and treating tooth sensitivity.Management of dentin hypersensitivity with desensitizing toothpaste and in-office fluoride treatment.. Neither moves the gumline back; they treat the symptom while the cause — the brushing habit, the gum disease — gets addressed on its own track.

Sensitivity that persists despite these measures, or that sharpens into pain on biting or lingering ache, is a reason to go back for another look rather than escalate to stronger products alone. Those patterns can point past the root surface to the nerve itself, which is a different problem with a different fix.

Can aligners and orthodontics cause recession?

Tooth movement can contribute to recession, because moving a tooth changes where it sits within its narrow envelope of bone and gum. A tooth pushed toward the outer edge of that envelope can end up with less tissue covering it. Supervised orthodontists plan around this with imaging and pacing — which is exactly what is missing when nobody examines the mouth before the teeth start moving.

That concern is not hypothetical. A study of the FDA's MAUDE database — the federal registry where medical-device harms are reported — catalogued adverse-event reports linked to direct-to-consumer, mail-order aligners, including gum recession, tooth mobility, open bite, and pain 6Ref 6Kunkel T, et al. (2023).Adverse Events Related to Direct-To-Consumer Sequential Aligners - A Study of the MAUDE Database.That adverse events linked to direct-to-consumer aligners — including gum recession, tooth mobility, open bite, and pain — have been reported to the FDA's MAUDE database; cited for the existence and types of reports, not incidence rates.. Reports to a voluntary database cannot say how often these harms occur, but they document that they do occur, in real mouths, with no clinician watching the tissue while it happened.

The practical reading: anyone with existing recession, thin tissue, or a history of gum disease has specific reasons to want an in-person exam before any tooth movement, and to raise the gumline explicitly when treatment is being planned. During any aligner or braces treatment, a gum margin that visibly changes is worth reporting to the treating clinician promptly — moving teeth is a medical procedure, and the gums are part of what is being moved.

Do receded gums grow back?

No — gum tissue lost to recession does not regenerate on its own. No rinse, paste, vitamin, or oil-pulling routine rebuilds it, and any product promising regrowth is promising something gum biology does not do. The question is common enough to have a full guide of its own — do receding gums grow back — and the short answer there is the same: coverage, not regrowth, is what treatment offers.

What surgery can do is cover the exposed root. Gum grafting moves tissue over the recession site, and it is the established treatment when recession is deep, progressing, or persistently sensitive 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option.. Grafting is not automatic for every receded tooth — shallow, stable recession on a healthy mouth is often simply measured, photographed, and watched.

A range of intermediate measures also exists before anyone commits to surgery; the gum graft alternatives are covered separately, and they are mostly about symptom control and stopping progression rather than rebuilding the line.

The honest framing is stabilization first. Stop the cause — the disease, the brushing force, the rubbing piercing — and most recession stops with it. Once the line is stable, covering what was already lost becomes a considered choice about symptoms and appearance rather than an emergency, and that is a much better position to decide it from.

What is the treatment ladder for receding gums?

Treatment follows the cause, and it escalates only as far as the recession demands. Most people never need the top rungs; almost everyone needs the bottom ones, because a graft placed while the cause is still active is a graft placed to fail. The ladder, from bottom to top:

• Fix the mechanics. A soft brush and lighter technique, attention to a grinding habit, removing a piercing that rubs. For early wear-driven recession, this is the entire treatment.
• Treat the infection. When periodontal disease is the driver, care starts with controlling the infection below the gumline and establishing ongoing maintenance 2Ref 2National Institute of Dental and Craniofacial Research (2024).Periodontal (Gum) Disease.What periodontal disease is — a bacterial infection of the tissues holding teeth in place — its progression from gingivitis, its symptoms, and the general goals of treatment. — recession repair is pointless while the disease that caused it is still eating support.
• Manage the symptoms. Desensitizing toothpaste, and in-office fluoride for exposed roots that ache 5Ref 5American Dental Association (JADA For the Patient) (2014).Preventing and treating tooth sensitivity.Management of dentin hypersensitivity with desensitizing toothpaste and in-office fluoride treatment..
• Monitor with numbers. Recession is measured in millimeters at each visit. Stable measurements on healthy tissue justify watching rather than operating.
• Graft where it matters. Sites that are deep, progressing, or persistently symptomatic — or that show every time you smile — are the candidates for surgical coverage 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option..

The full menu, including who is a candidate for what, lives in the guide to receding gums treatment options. As for who manages it: a general dentist handles the bottom rungs comfortably, while measurable bone loss, deep pockets, recession that keeps advancing, or a graft decision are the standard reasons to be referred — a companion guide covers when to see a periodontist.

When recession is a cosmetic question

Sometimes the tissue is stable and healthy and the complaint is the mirror: one tooth looks longer than its neighbors, or the gumline runs unevenly across the smile. An uneven gum line has causes beyond recession — teeth erupt to slightly different heights, and some gumlines simply grew asymmetrically — so the first step is the same exam that rules disease in or out.

It is worth knowing that cosmetic gumline procedures mostly run in the opposite direction from recession repair. The procedure called gum contouring removes and reshapes excess tissue to make teeth look longer — the treatment for a gummy smile, not a receded one — and a separate guide answers whether reshaped gums grow back. Recession's cosmetic fix is coverage: grafting can restore the line where a root shows in a smile 1Ref 1American Dental Association (JADA For the Patient) (2014).Gingival recession.The causes of gum recession, including aggressive brushing and periodontal disease; exposure of the root and its consequences; and gum grafting as a treatment option..

Two cautions close the loop. First, a cosmetic complaint can be the first visible sign of a structural problem, which is why even a purely aesthetic consult should include pocket measurements rather than skip straight to the mirror discussion. Second, tissue health and stability come before appearance in any defensible treatment sequence. A graft placed over active disease fails, and a beautiful gumline on a loosening tooth is not a result worth paying for — sequencing is the difference between a cosmetic result that lasts and one that has to be redone.