Receding Gums: Causes, Levels and What Actually Helps

Short answer

• Receding gums, called gum recession, happen when the gum tissue that surrounds a tooth pulls back or wears away, exposing more of the tooth and sometimes part of its root. Lost gum tissue does not grow back on its own. What treatment can do is stop the recession from getting worse, protect the exposed root, ease sensitivity, and, in suitable cases, cover the root again with a surgical graft. Which of those applies depends on the cause and on how much attachment has been lost, and both are things a dentist measures at an examination rather than things anyone can judge reliably in a mirror. The most common causes are periodontal (gum) disease, brushing too hard or with a hard bristled brush, teeth grinding, tobacco use, oral piercings that rub the gum, and teeth that sit out of line so that gum and bone are thin at that spot. The steps that genuinely help are unglamorous: treat any gum disease, correct brushing technique, clean between the teeth daily, stop tobacco, and deal with grinding or a rubbing piercing. This article is general information only, not a diagnosis or a treatment plan, and it cannot grade your own gums. If you notice recession, book a dental examination so the cause and measurements can be established for your mouth.

What Gum Recession Is

In a healthy mouth, gum tissue fits snugly around each tooth and covers the root completely, so only the crown, the part coated in hard enamel, shows above the gum line. Recession is the gradual movement of the gum edge away from the crown and down the root. The American Dental Association (ADA) describes it simply: when gums pull away from the teeth, that is gum recession, and it can happen at one tooth, at several teeth, or across much of the mouth.

The change matters because of what it exposes. A tooth root is not covered by enamel. The ADA’s patient guidance on tooth decay explains that roots are covered with cementum, a softer material than enamel, which makes an exposed root more prone to decay and more sensitive to touch and to hot and cold. Recession also tends to travel with loss of the attachment and bone that hold the tooth, although the two are not identical, and a dentist separates them by measurement, as the severity section below explains.

Recession usually develops slowly, over months or years, which is why many people first hear about it from a dentist. It is common in adults and becomes more common with age, as causes such as gum disease and years of hard brushing accumulate. Slow development is also the opportunity: recession found early, with its cause corrected, can often be held stable for many years.

What Causes Gums to Recede

Recession rarely has a single cause. More often, a vulnerable spot meets a repeated pressure, whether that pressure is bacterial, mechanical, or both. Understanding the main causes matters because treatment that ignores the cause usually fails, even when the gum itself is repaired.

Periodontal disease

Gum disease is the leading cause. Plaque, a sticky film of bacteria, forms on teeth every day. The National Institute of Dental and Craniofacial Research (NIDCR) explains that plaque left in place hardens into tartar, also called calculus, which only a professional cleaning can remove, and that the bacteria in plaque and tartar trigger inflammation that damages the gums and the supporting tissues around the teeth. Early disease, gingivitis, inflames the gum surface only. Advanced disease, periodontitis, spreads below the gum line, forms pockets, and destroys the ligament and bone holding the tooth. As that support is lost, the gum follows it down the root. The Centers for Disease Control and Prevention (CDC) notes that periodontitis cannot be reversed, although it can be slowed and managed with professional treatment. Our guide to gingivitis vs gum disease explains how the early, reversible stage differs from the advanced one.

Brushing too hard

Brushing removes plaque, but force is not what does the cleaning. The ADA lists brushing your teeth too hard, or using a toothbrush with hard bristles, among the established causes of recession. Years of vigorous horizontal scrubbing wear the gum edge, often most visibly on the side teeth where people press hardest. A practical clue is a toothbrush whose bristles splay or fan out within a few weeks of use. That pattern suggests more pressure than the gum can tolerate, although only an examination can say whether it explains a particular area of recession.

Grinding and clenching

The CDC lists malocclusion (crooked teeth), clenching, and bruxism (grinding teeth) among the factors associated with gum disease. Repeated heavy force stresses the tissues around a tooth, and where gum and bone are already thin, it can contribute to recession and to wear where crown meets root. Grinding is often worst during sleep, so it can continue for years before anyone connects it with jaw ache, worn teeth, or a changing gum line.

Tobacco

The NIDCR identifies smoking or using tobacco products as the most significant risk factor for gum disease, and notes that tobacco can also delay healing and make treatment for gum disease less successful. Tobacco reduces the gum’s ability to fight infection and to repair itself, so recession linked to gum disease is more likely in people who smoke, and grafts and other treatment heal less predictably. Chewing tobacco held against the gum can also injure the tissue at that exact spot.

Piercings, anatomy, and tooth position

Lip and tongue piercings can rub or press on the gum next to them. A systematic review of oral piercings and periodontal health, published in the International Journal of Dental Hygiene in 2024, found that teeth next to lip piercings frequently showed gingival recession, and that tongue piercings were linked to deeper pockets and attachment loss at neighboring teeth. The damage is local and mechanical, which is why recession from a piercing usually appears at the one or two teeth the jewelry touches.

Anatomy loads the dice as well. The ADA notes that some people are born with gums that are thin or weak, and that prominent tooth roots can push gums out of place. A tooth that sits outside the main line of the arch, whether naturally, after crowding, or following orthodontic movement, may have thin bone and gum on its outer surface, leaving little margin for hard brushing or inflammation. Ill fitting partial dentures and direct injury to the gum, such as a sports injury, are further ADA listed causes. Hormonal changes during puberty, pregnancy, and menopause can make gums more reactive to plaque, so the same amount of plaque produces more inflammation at those times.

Symptoms: What Recession Looks and Feels Like

The classic sign is a tooth that looks longer than it used to, or longer than the tooth next to it. Other signs include:

• A visible notch or step where the crown meets the root, which a fingernail or tongue can sometimes feel.
• Sensitivity to cold, hot, sweet, or acidic foods, or a brief sharp twinge when brushing the neck of the tooth, because the exposed root reacts more than enamel does.
• A gum line that looks uneven from tooth to tooth, or a single tooth whose gum sits noticeably lower or higher than its neighbors.
• Root surfaces that look slightly darker or more yellow than the crown, since root material differs in color from enamel.
• In recession driven by gum disease, red or swollen gums, bleeding when you brush or clean between your teeth, persistent bad breath, or, in advanced cases, a tooth that feels loose or has shifted.

Recession is often painless, especially early, so the absence of pain is not reassurance. Our companion article on the 5 signs of gum disease works through the warning pattern in more detail. What a mirror cannot show you is the part that decides severity: how much attachment and bone have been lost beneath the surface, and whether the tissue between the teeth is still intact.

How Dentists Gauge Severity

Dentists do not grade recession by appearance alone. They measure it, in millimeters, and those measurements are what the plain language levels below rest on.

The measurements

At an examination, the dentist or hygienist records the distance from the cementoenamel junction, the line where crown enamel meets root, down to the current gum edge. That distance is the depth of recession at that point on the tooth. A thin instrument called a periodontal probe, which the NIDCR describes as a tiny ruler, also measures the pocket around the tooth: in a healthy mouth those spaces are usually between 1 and 3 millimeters, and deeper readings can signal periodontal disease. Comparing the recession and pocket readings gives the clinical attachment level, the total amount of support lost at that spot. Dental X rays add the bone level around the root, which no visual check can provide.

The levels in plain language

Readers often meet recession described as mild, moderate, or advanced. Those words are a plain language summary, not a formal diagnosis, and they map roughly onto the measurements like this:

• Mild. A small amount of root is exposed, typically around 1 to 2 millimeters of recession, the tissue between the teeth is intact, and sensitivity is absent or occasional. The priority is finding and removing the cause and then monitoring with repeat measurements.
• Moderate. More root is exposed, sensitivity is more noticeable, and the uneven gum line is easy to see. Some attachment loss is usually present, and the dentist weighs active treatment of the cause against closer review intervals.
• Advanced. A large area of root is exposed, tissue between the teeth may also be lost, pockets are deeper, and teeth may feel loose. The risk is no longer only sensitivity or appearance; it is the long term stability of the tooth.

The classifications dentists actually use

Alongside depth in millimeters, periodontists classify recession by what has happened between the teeth, because that predicts how much root coverage surgery can achieve. The older Miller system runs from Class I to Class IV. In Class I and Class II, there is no loss of bone or attachment between the teeth, and full root coverage is considered obtainable. In Class III, there is some interdental loss, and only partial coverage is expected. In Class IV, interdental loss is severe, and reliable coverage is not expected.

The newer Cairo system, adopted by the 2017 World Workshop classification of periodontal diseases, uses three recession types based on interproximal (between the teeth) attachment loss. Recession Type 1 (RT1) has no interproximal attachment loss. Recession Type 2 (RT2) has interproximal loss that is less than or equal to the attachment loss on the front surface of the tooth. Recession Type 3 (RT3) has interproximal loss greater than the loss on the front surface. In plain terms, RT1 defects have the support needed for the most predictable coverage, while RT3 defects have lost the neighboring support that holds repositioned tissue in place, so goals shift toward protection and stability rather than complete coverage. Neither system can be applied at home, because both depend on probe measurements around each tooth.

Why Lost Gum Tissue Does Not Grow Back on Its Own

Once gum tissue and attachment are lost, the body does not rebuild them unaided the way skin closes over a small cut. The CDC states the underlying point for periodontitis plainly: the condition cannot be reversed, only slowed and managed. The ADA makes the same point from the brushing side: learning a gentler technique will not repair existing damage, although it will prevent new damage. That is why products marketed as able to regrow gums should be treated with skepticism. No toothpaste, oil, supplement, or home remedy has been shown to regenerate lost gum attachment.

Two different things are easily confused here. Products for sensitive teeth, and professional fluoride or bonding treatments, can genuinely reduce sensitivity at an exposed root, and that relief is worthwhile. Reducing sensitivity is not regrowing tissue. What professional treatment can do is halt the process, protect the root, and, where the classification is favorable, surgically cover the root with tissue moved or grafted into place: replacement and repositioning by a clinician, not regrowth prompted by a product.

What Genuinely Helps at Home

Home care cannot reverse recession, but it decides whether recession stays stable or keeps progressing, and it is the foundation every professional treatment stands on.

Use a soft brush, and change the technique, not just the brush. Choose a soft bristled toothbrush and use light pressure with small, gentle strokes angled toward the gum line, rather than hard side to side scrubbing. The ADA’s advice for recession caused by hard brushing is that your dentist or hygienist can show you a better way to clean your teeth, so ask for a demonstration at your next visit rather than guessing. Some electric brushes have pressure sensors that signal when you push too hard, which can help if heavy pressure is your habit. Replace a brush whose bristles have splayed, and treat early splaying as feedback about pressure.

Clean between the teeth every day. Plaque between teeth is a major driver of gum disease, and brushing alone does not reach it. The NIDCR advises flossing regularly, and notes that interdental brushes, picks, or a water flosser recommended by a dental professional are alternatives. Our guide to how to remove plaque from teeth explains which deposits home care can shift and which only a professional cleaning can remove.

Use fluoride toothpaste, and be careful with sensitivity claims. Fluoride toothpaste helps protect exposed root surfaces, which decay more easily than enamel, and toothpaste made for sensitive teeth can reduce sensitivity for some people when used consistently. Neither restores gum tissue, so judge them by comfort and protection, not by regrowth promises.

Stop tobacco. Quitting is one of the highest impact steps for gum health, because tobacco drives gum disease and undermines healing after treatment.

Remove the rubbing source. If a lip or tongue piercing sits against a receding gum, talk to your dentist about it honestly. The evidence linking piercings to local recession is consistent enough that removing the jewelry is often part of stopping that particular recession, and only your dentist can weigh that against your measurements.

Keep regular appointments. Professional cleaning removes tartar that home care cannot touch, and repeat probe measurements are the only reliable way to know whether recession is stable or progressing. Many mild cases are managed exactly that way.

Professional Treatment: The Cause Comes First

Treatment always starts with the cause. Active gum disease must be treated, brushing technique corrected, grinding addressed, or a rubbing piercing removed. Without that step, recession is likely to continue even after a graft, because the force or infection that caused it is still operating.

Scaling and root planing

For gum disease, the usual first professional step is scaling and root planing, the deep cleaning below the gum line. The ADA describes it as the first step when recession is caused by periodontal disease: the dentist removes plaque and tartar from the tooth and root surfaces, which helps gum tissue heal and sit more closely against the tooth. The American Academy of Periodontology (AAP) adds that root planing smooths the root so plaque and toxins are less likely to adhere again. It is a clinical procedure, done with proper instruments and often with local anesthetic. Do not attempt to scrape your own gums or hardened tartar at home. Home scraping can cut gum tissue, groove the root surface, and push bacteria deeper, while still leaving tartar behind. Our article on deep cleaning for teeth explains how this treatment differs from a routine cleaning and what the review visit involves.

After active treatment, many people with periodontitis move to maintenance visits more frequent than the standard interval, often every three to four months, because bacteria recolonize deep pockets over time. Your dentist sets the interval from your measurements, not from a fixed rule.

Gum grafting and root coverage

When recession is significant, progressing, or causing sensitivity or root decay risk that monitoring cannot manage, a gum graft can cover exposed root and rebuild a healthier gum line. The AAP describes gum graft surgery this way: the periodontist takes gum tissue from your palate or another donor source to cover the exposed root, the procedure can be done on one tooth or several, and it may help reduce sensitivity, improve the look of the smile, and prevent additional recession and bone loss. The ADA’s description matches: a thin piece of gum tissue taken from another place in the mouth and attached where the gum has receded.

Recovery is individual. The ADA advises that after a graft your dentist will explain how to care for the area, which may include a special mouthrinse, changes to what you eat, and sometimes a protective dressing over the graft, and that tobacco and alcohol should be avoided while healing. The first week or two is typically the period when care instructions matter most, but full healing takes longer, and your clinician’s instructions for your procedure govern. How much coverage to expect depends heavily on the classification described earlier: defects with no interdental loss are the most predictable, while defects with severe interdental loss are treated with protection and stability as the realistic goals.

A different technique, the pinhole surgical technique, repositions existing gum tissue through a small opening instead of taking tissue from the palate. Early studies report root coverage in suitable cases, but it should be presented honestly: a 2019 systematic review found a lack of high quality studies demonstrating its long term outcomes, and its evidence base remains much smaller than the decades of research behind conventional grafting. Suitability is a question for a periodontist who has examined you, not for marketing material.

Grinding, bite, and night guards

If grinding or clenching is part of the picture, a dentist may recommend a custom night guard to separate the teeth during sleep and reduce the repeated force on them. A guard protects teeth from grinding forces; it does not treat gum disease and does not regrow gum tissue, so it works alongside, not instead of, the steps above. Our guide to a gum shield for bruxism explains what to know before choosing a guard. Where tooth position or an uneven bite overloads one area, the dentist may also discuss orthodontic or bite adjustment options, in general terms, as part of removing the cause.

When to See a Dentist

Do not wait for pain, because recession and gum disease are often painless until they are advanced. Book a dental appointment if:

• Your teeth look longer than they used to, or one tooth looks longer than its neighbors.
• You can see or feel a notch where the tooth meets the gum.
• Sensitivity to cold, sweet, or acidic foods has increased or is new.
• Your gums bleed when you brush or clean between your teeth, or look red and swollen.
• You have bad breath or a bad taste that keeps returning despite good cleaning.
• A tooth feels loose, has shifted, or your bite feels different.

The NHS advises seeing a dentist for bleeding gums, painful swollen gums, or bad breath, and asking for an urgent appointment if gums are very sore and swollen, teeth are becoming loose, or there are ulcers, red patches, or a lump in the mouth or on the lip. Mild to moderate recession, with its cause corrected and measurements monitored, often stays stable for many years. Advanced, untreated recession can progress to further bone loss and eventually tooth loss, which is why early assessment and steady maintenance matter more than any single procedure.

Frequently Asked Questions

Can receding gums grow back?

No. Gum tissue and attachment lost to recession do not regenerate on their own, and no toothpaste, oil, or supplement has been shown to regrow them. Treatment can stop further loss, protect the exposed root, and, in suitable cases, cover the root surgically with grafted or repositioned tissue. That is why the realistic goals are stability first and coverage second, not regrowth at home.

Is gum recession always a sign of gum disease?

No. Periodontal disease is the leading cause, but recession also occurs from years of hard brushing, from a piercing rubbing the gum, from a tooth positioned so that its gum and bone are thin, and from direct injury. The distinction matters because treatment follows the cause: deep cleaning for disease, technique correction for brushing damage, removal of a rubbing piercing. An examination with measurements is how the cause is sorted out.

Can I stop recession without surgery?

Often, yes, if the recession is mild and the cause can be removed. Correcting brushing technique, treating gum disease professionally, stopping tobacco, and addressing grinding can hold many cases stable, and stable recession under regular monitoring is a common and legitimate plan. Surgery enters the discussion when recession progresses despite those steps, when sensitivity or root decay risk is significant, or when the remaining gum is too thin to rely on.

What is the difference between a gum graft and the pinhole technique?

A gum graft adds tissue, most commonly taken from the palate or from a donor source, and attaches it over the exposed root. The pinhole technique uses no added tissue; the clinician loosens the existing gum through a small opening and moves it down over the root. Grafting has a long and well studied track record. The pinhole technique has promising early reports but a smaller evidence base and less long term data, and it is not suitable for every defect. Your periodontist can say which, if either, fits your measurements.

Does a night guard help receding gums?

Indirectly, when grinding is part of the cause. A custom guard reduces the repeated force that clenching and grinding place on teeth during sleep, which can contribute to recession at vulnerable spots. It does not treat gum disease, reverse recession, or replace cleaning and monitoring. It removes one pressure from the system while the other causes are dealt with directly.

Why do my teeth hurt with cold drinks after my gums receded?

Because the exposed root lacks the enamel coating that insulates the crown. Root surfaces are covered with a softer material and sit closer to the nerve pathways of the tooth, so cold, hot, sweet, and acidic stimuli reach them more easily. Sensitivity toothpaste, professional fluoride treatment, or covering the root can each reduce the problem. New or worsening sensitivity is still worth reporting, since decay at the root and other problems can produce similar feelings.

Can teenagers and young adults get gum recession?

Yes, although it is more common with age. In younger people the usual drivers are hard brushing, orthodontic tooth movement through thin bone and gum, and lip piercings, for which the research link to local recession is strong. Recession at a young age deserves the same response as at any age: measurements, a cause, and a plan, rather than waiting to see.

How often should receding gums be checked?

At whatever interval your dentist sets from your measurements. Someone with treated periodontitis commonly attends maintenance visits every three to four months, while a person with mild, stable brushing related recession and healthy pockets may be monitored at routine checkups. The point of the interval is repeat measurement: recession is only known to be stable when the numbers say so over time.

Sources & references

• American Dental Association, Gum Recession: Causes and Treatments (patient education). Supports the definition of recession, the ADA listed causes (periodontal disease, brushing too hard or with hard bristles, trauma, ill fitting partial dentures, genetics and thin gums, prominent tooth roots, smoking and tobacco), the statement that better brushing prevents new damage without repairing existing damage, scaling and root planing as the first step for disease related recession, the description of a gum graft, and aftercare advice including avoiding tobacco while healing. https://www.smartpractice.com/Images/Products/PC/PhotoLg/BR0509_ADA.pdf
• American Dental Association, MouthHealthy, Tooth Decay. Supports the point that exposed tooth roots are covered with cementum, a softer tissue than enamel, making them susceptible to decay and more sensitive to touch and to hot and cold. https://www.mouthhealthy.org/en/az-topics/d/decay
• American Academy of Periodontology, Surgical Procedures: Gum Graft Surgery. Supports the description of gum graft surgery using tissue from the palate or another donor source to cover the exposed root, on one tooth or multiple teeth, helping to reduce sensitivity and prevent additional recession and bone loss. https://www.perio.org/for-patients/periodontal-treatments-and-procedures/surgical-procedures/
• American Academy of Periodontology, Gum Disease Information and Non-Surgical Treatments. Supports the account of periodontal disease progression, scaling beneath the gum line to remove plaque and bacterial toxins, root planing to smooth the root, and ongoing maintenance therapy after treatment. https://www.perio.org/for-patients/gum-disease-information/ and https://www.perio.org/for-patients/periodontal-treatments-and-procedures/non-surgical-treatments/
• National Institute of Dental and Craniofacial Research, Periodontal (Gum) Disease. Supports plaque hardening into tartar that only professional cleaning removes, tobacco as the most significant risk factor that also delays healing, probe measurement with healthy pockets usually 1 to 3 millimeters, and the home care tips of brushing with fluoride toothpaste, flossing, routine checkups, and quitting tobacco. https://www.nidcr.nih.gov/health-info/gum-disease
• Centers for Disease Control and Prevention, About Periodontal (Gum) Disease. Supports periodontitis as an irreversible condition that can be slowed and managed, the association list including malocclusion, clenching and bruxism, hormonal changes, diabetes, and genetics, and scaling and root planing as a named nonsurgical treatment. https://www.cdc.gov/oral-health/about/gum-periodontal-disease.html
• NHS, Gum Disease. Supports the advice to see a dentist for bleeding gums, painful swollen gums, or bad breath, the urgent appointment triggers (very sore and swollen gums, teeth becoming loose, ulcers or red patches, a lump in the mouth or on the lip), and deep cleaning under the gums and gum surgery as treatments for serious disease. https://www.nhs.uk/conditions/gum-disease/
• Cairo F, Nieri M, Cincinelli S, Mervelt J, Pagliaro U. The interproximal clinical attachment level to classify gingival recessions and predict root coverage outcomes. Journal of Clinical Periodontology, 2011; and the 2017 World Workshop adoption of the Cairo recession types, as summarized in the peer reviewed review at https://pmc.ncbi.nlm.nih.gov/articles/PMC9327467/ Supports RT1 (no interproximal attachment loss), RT2 (interproximal loss less than or equal to buccal loss), and RT3 (interproximal loss greater than buccal loss).
• American Academy of Periodontology, Dental Hygiene Engagement Initiative handout on gingival recession. Supports the Miller classification summary: Class I and Class II with no interdental bone loss and full root coverage obtainable, Class III with interdental loss and partial coverage, Class IV with gross interdental bone loss. https://advancedperioatl.com/wp-content/uploads/2024/05/handout-highlevel-takeaways.pdf
• Difloe-Geisert JC, Müller JS, Weiger R, Walter C. Impact of oral piercings on periodontal health: a systematic review. International Journal of Dental Hygiene, 2024;22(1):24-35. doi:10.1111/idh.12734. Supports the finding that teeth adjacent to lip piercings frequently show gingival recession and that tongue piercings are associated with deeper pockets and attachment loss at adjacent teeth.
• Pradeep AR, Shetty S. Pinhole surgical technique in management of gingival recession: a systematic review. Journal of Clinical and Diagnostic Research, 2019;13(7):ZC21-ZC25. Supports the qualification that high quality long term outcome studies for the pinhole technique are lacking.