Receding Gums — Why It Happens and How It Is Treated

The visible part of a tooth is covered in enamel, which is hard, smooth and insensitive. Below the gum line the root is covered by a thin layer of cementum that wears away readily. Beneath it lies dentine, whose microscopic tubules connect to the nerve. Recession exposes that surface to the mouth.

This explains almost every symptom people report. The exposed root is sensitive because the dentinal tubules transmit temperature changes to the nerve. It stains more readily because it is rougher than enamel. It decays faster because it demineralises at a higher pH — that is, it needs less acid than enamel to start dissolving. And it looks darker, because dentine is naturally more yellow.

The gum itself is not simply sliding downwards. What is actually happening in most cases is that the thin plate of bone covering the root has been lost, and the gum has followed it — gum tissue needs bone underneath to sit on. This is why treatment aimed only at the visible gum, without addressing why the bone went, rarely holds.

It is also why recession is measured rather than eyeballed. A dentist records the distance from a fixed landmark to the gum edge at several points on each tooth. Repeating that measurement six months later is the only reliable way to know whether the problem is active or historic.

Recession has two main causes and they require opposite corrections, which is why generic advice so often fails. Doing the wrong one makes it worse.

Periodontal disease is inflammation caused by plaque left at the gum margin. The body's response to that bacterial film destroys the attachment and the bone beneath it. Here the problem is too little effective cleaning, and the correction is more thorough hygiene plus professional removal of hardened deposits.

Mechanical abrasion is physical wear from brushing too hard, with too stiff a brush, or in a scrubbing motion. Here the problem is too much force, and the correction is a soft brush, lighter pressure and a different technique. Telling this patient to brush more thoroughly makes the recession advance faster.

The two look similar at the gum edge and are distinguished by context. Abrasion-driven recession is typically on the outer surfaces, often worse on the side opposite the dominant hand, with clean teeth and healthy pink tissue. Disease-driven recession comes with bleeding, deposits, and gaps that measure deep when probed.

Beyond the two main causes, several factors either accelerate recession or make a person more vulnerable to it.

• Thin biotype. Some people simply have thin gum tissue and a thin plate of bone over the roots. It is inherited, it cannot be changed, and it means recession happens more readily from the same amount of insult.
• Tooth position. A tooth sitting outside the arch has less bone covering its root by definition. This is why crowding and malposition frequently show recession on the most prominent tooth.
• Grinding and clenching. Heavy lateral forces flex the tooth at the neck and are strongly associated with both recession and the wedge-shaped notches often seen alongside it. Managing the habit is part of managing the recession.
• Smoking. Reduces blood supply to the gum, masks bleeding so disease progresses unnoticed, and measurably worsens the outcome of any surgical correction.
• Piercings. Lip and tongue jewellery rubbing against the gum produces localised recession that is often severe and confined to one or two teeth.

Orthodontic treatment appears on many lists and deserves a more careful statement: moving teeth within the bone does not cause recession, but moving them beyond the bony envelope can. That is a planning question rather than an argument against alignment.

This is the single most useful thing to establish, and it cannot be judged from how bad the recession looks. Severe stable recession may need nothing; mild active recession needs intervention now.

1. Measurement over time. Recorded depths and gum levels compared at six-month intervals. This is the definitive answer and everything else is a proxy for it.
2. Bleeding on probing. Healthy gums do not bleed when gently probed. Bleeding indicates active inflammation, which means active disease.
3. Photographs. Comparing an old photograph with a current one is crude but genuinely informative over a span of years.
4. New sensitivity. Root surfaces that have been exposed for years often desensitise naturally. Sensitivity that is new or increasing suggests fresh exposure.

If the answer is that recession is active, the plan starts with stopping it. Grafting an area where disease is still progressing wastes the graft, and any reputable clinic will decline to do it until the tissue is stable.

Many patients present because of how it looks — teeth appearing longer, dark triangles opening between them. Those are real concerns. There are three others that matter clinically.

Root decay. An exposed root surface demineralises at a higher pH than enamel — it needs less acid to start decaying — and it decays faster than enamel and is harder to restore because the margin sits at or below the gum. Root caries in older adults is a common reason for losing teeth that had otherwise survived a lifetime.

Reduced support. Where recession reflects bone loss, the tooth has less anchorage. Advanced cases show mobility, and teeth can drift — which is one route to gaps opening between front teeth in an adult who never had them.

Restorative complications. Any future crown, veneer or bridge has to have its margin placed somewhere, and a receding gum line moves the goalposts. Restorations made against a gum edge that later recedes end up with a visible line, which is a common reason otherwise sound crowns are remade.

For most patients this is the symptom that prompts the appointment, and it is usually treatable without any surgery at all.

Desensitising toothpastes work in two ways: potassium salts calm the nerve response, and stannous fluoride or arginine formulations physically occlude the open channels in the root surface. They need consistent use over weeks rather than days, and rubbing a small amount directly onto the sensitive area before bed works better than brushing alone.

In the clinic, fluoride varnish, resin sealers and desensitising agents applied directly to the exposed root give faster relief and can be repeated. Where a wedge-shaped notch has formed at the neck of the tooth, filling it with composite both seals the surface and restores the shape.

Two habits sabotage all of this. Brushing immediately after acidic food or drink removes the softened surface layer along with the treatment. And whitening over exposed roots increases sensitivity substantially and lightens them less predictably than enamel — a point covered in what whitening can and cannot do.

Where recession is driven by disease, the first phase is always non-surgical and it resolves a large proportion of cases without anything further.

Professional debridement removes plaque and hardened tartar from above and below the gum line, including root surfaces inside the pockets. This is more involved than a routine scale and polish and is often done under local anaesthetic across two or more appointments.

Alongside it, technique correction. For abrasion cases this means a soft brush, pen grip rather than fist grip, and small circular movements at the gum margin instead of horizontal scrubbing. Electric brushes with pressure sensors help precisely because they remove the temptation to push.

Re-assessment follows six to eight weeks later, measuring the same points. Tissue that has responded will show reduced bleeding and shallower pockets. That result determines everything afterwards: stable tissue can be maintained, monitored and, if the patient wishes, grafted. Unstable tissue needs further periodontal treatment first.

Grafting covers exposed root surface with new tissue. It is the only method that genuinely restores gum coverage, and it is appropriate when recession has been stabilised but the exposure is causing persistent sensitivity, decay risk or unacceptable appearance.

A connective tissue graft takes a small amount of tissue from the palate and places it under the gum at the recession site. It is the most predictable technique and the most widely used. The palate donor site is uncomfortable for about a week and heals fully.

A free gingival graft takes surface tissue from the palate instead. It is used primarily to thicken tissue rather than to cover roots, and the colour match is less good. Donor-free alternatives using processed tissue matrices avoid the palate entirely, with slightly less predictable coverage.

Realistic expectations matter. Complete root coverage is achievable in favourable cases — shallow recession with intact bone between the teeth. Where bone between the teeth has already been lost, partial coverage is the honest goal, and any clinic promising complete coverage in that situation is overpromising.

Newer approaches avoid cutting and lifting a flap. Instead the gum is released through a small opening and repositioned over the exposed root, sometimes with graft material threaded underneath.

The advantages are genuine: less discomfort, faster healing, no sutures across the visible gum, and several adjacent teeth treatable in one session. For a patient travelling for treatment, the shorter recovery is a practical benefit.

The limitations are equally real. These techniques suit recession where the gum is reasonably thick and the recession is not extreme. Thin tissue tears, and deep recession with lost bone between teeth does not respond to repositioning alone. Long-term evidence is shorter than for connective tissue grafting, which has decades behind it.

The right question to ask is not which technique is newest but which suits your tissue. A clinic that offers only one method will recommend that method; one that offers several should be able to explain why yours was chosen.

Not every exposed root needs a graft. Where the concern is sensitivity or a notch at the neck of the tooth rather than appearance, restorative treatment is simpler, cheaper and often sufficient.

Composite placed into a wedge-shaped defect seals the dentine, stops the notch deepening and restores contour. It is the same material used to close small gaps and to repair chipped edges. It does not recreate gum, so the tooth still looks longer — but for a back tooth nobody sees, that is rarely the point.

Where recession has exposed the margin of an existing crown, leaving a visible dark line, the choice is between grafting to cover it or remaking the crown with a new margin. Remaking is more predictable; grafting preserves the existing work. The decision usually rests on how old the crown is.

Combination treatment is common and sensible: graft the visible front teeth where appearance matters, restore the back teeth where it does not. The same principle applies when recession is one part of a wider plan alongside replacing missing teeth — the sequence is decided once, for the whole mouth. There is no requirement to treat every affected tooth the same way.

The four treatment routes differ in what they achieve, not only in cost and difficulty. Choosing between them starts with deciding whether the goal is comfort, appearance, or stopping progression — they are not the same goal, and no single treatment delivers all three.

The first row is the one to read carefully. Only non-surgical treatment addresses the cause directly, and it does so only where that cause is disease. Every other option manages consequences. This is why a plan that opens with grafting, without a stabilisation phase first, is putting the second step before the first — and why the sequence matters more than the choice of technique.

Tissue recession around an implant is a different problem from recession around a natural tooth, and it is considerably harder to correct.

A natural tooth is attached to the surrounding tissue by fibres that run into the root surface. An implant has no such attachment — the tissue sits against a smooth surface rather than being anchored into it. That means less resistance to bacterial invasion and less scaffolding for a graft to attach to.

When it happens, the exposed implant surface or the metal abutment beneath the crown becomes visible, and a grey shadow shows through thin tissue. Grafting can improve this but is less predictable than around a natural tooth. Prevention through adequate tissue thickness at the time of placement is far more effective than correction afterwards.

Recession around an implant also raises the question of whether the underlying bone is being lost — which is a different and more serious matter. Peri-implantitis and implant failure covers how that is diagnosed and what can be done.

Once recession has been stabilised, keeping it stable is a maintenance question rather than a treatment one. A soft brush used with light pressure, correct technique at the gum margin, interdental cleaning, and regular professional review cover the overwhelming majority of cases.

Where grinding is a contributor, a night guard is part of maintenance rather than an optional extra — the lateral forces continue otherwise. Where smoking is a factor, it is discussed honestly, because it affects both progression and the outcome of any grafting.

Our assessment establishes cause and activity before discussing treatment, because those two answers determine everything else. We would rather record measurements and reassess in a few months than graft tissue that is still receding. Where recession is stable and the patient is untroubled by it, doing nothing is a legitimate recommendation and we make it.

Our clinic has treated patients from more than thirty countries over twelve years. All treatments carry a lifetime guarantee, subject to attending the recommended check-ups and following the aftercare given, and excluding accidental damage or neglect. For gum treatment specifically, that maintenance requirement is not a formality — grafted tissue in a mouth where the original cause is unchanged will recede again. If you are planning treatment from abroad, how follow-up works once you fly home is worth reading first, and what the first appointment involves explains the assessment.