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Dr. Khalid AletaibiConservative Dentistry · Dubai

Dark gums, and what can change

Gum depigmentation: what it treats, and what it does not

Dark patches on the gums are, in the overwhelming majority of cases, ordinary melanin, the same pigment that gives skin its colour, produced by cells that sit in the gum tissue exactly as they sit in skin. It is not a disease, it is not caused by anything you did, and it does not need treating. It is also, for some people, the first thing they see when they smile, and that is a reasonable thing to want changed.

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Quick answer

Gum depigmentation removes the surface layer of gum tissue that holds the melanin, letting it heal back lighter. Several techniques do this: laser, electrosurgery, cryosurgery, surgical abrasion with a bur, scalpel technique, and grafting. A systematic review of 61 publications compared how often the colour came back and reported recurrence rates of 0.32% for cryosurgery, 0.74% for electrosurgery and 1.16% for laser, against 8.89% for bur abrasion, the highest of the techniques examined. The authors note that the underlying literature is mainly case reports.[^1] Dr. Khalid Aletaibi carries this out himself, and examines the pigment before treating it, because a small number of pigmented lesions are not melanin.

What dark gums usually are

Normal melanin, not disease

What treatment removes

The coloured layer, not the cells making it

Lowest reported recurrence

Cryosurgery 0.32%, laser 1.16%

Before anything cosmetic

The pigment is examined, the gums made healthy

How Dr. Khalid helps

The examination comes first and it is short but not skippable. Most gum pigmentation is physiological melanin, distributed symmetrically, present for as long as the person can remember, and entirely benign. A minority is not: pigment that appeared recently, sits in one place, has an irregular edge, or is raised rather than flat belongs in a different conversation and is examined on its own terms before anything cosmetic is discussed. Where the pigment is physiological, Dr. Khalid Aletaibi carries out the depigmentation himself and sets out honestly what recurrence looks like, because the colour is produced by cells that are still there.

What the pigment is

Melanocytes sit in the basal layer of the gum epithelium as they do in skin, and they deposit melanin into the cells above them. How much they deposit is largely genetic, which is why physiological gum pigmentation is more common in some populations than others and why it has usually been there for as long as the person can remember. Treating it removes the coloured layer. It does not remove the cells that made the colour, and that single fact explains everything about how the result behaves over years.

The technique changes how long it lasts

A systematic review analysed 61 eligible publications on depigmentation across bur abrasion, scalpel surgery, cryosurgery, electrosurgery, gingival grafts and laser techniques, and used a random-effects Poisson regression to compare recurrence. Cryosurgery came out lowest at 0.32%, followed by electrosurgery at 0.74% and laser at 1.16%. Bur abrasion was highest at 8.89%.[1]

The review states its own limitation without prompting: it was based mainly on case reports, which is a weaker evidence base than the numbers alone suggest.[1] The pattern is still worth having, because it separates techniques that remove the pigmented layer cleanly and predictably from one that removes it more roughly. It is not a basis for saying one method is definitively better than another.

Health first, colour second

Depigmentation is done on healthy tissue. Inflamed gum is swollen, bleeds during the procedure, and heals unevenly, which shows in the result. Where probing finds attachment loss rather than simple inflammation, that is periodontitis and it is staged and graded on its own terms and treated before appearance is addressed at all.[2] This is not a formality: the tissue you are treating for colour has to be the tissue that will still be there afterwards.

Reported recurrence of pigmentation, by technique
Cryosurgery[1]0.32%
Electrosurgery[1]0.74%
Laser[1]1.16%
Bur abrasion[1]8.89%

Recurrence rates from a random-effects Poisson regression across 61 eligible publications. The review states that its evidence base was mainly case reports, so this is a pattern worth knowing rather than a definitive ranking.[^1]

What to expect

In practice

  • The pigment examined before it is treated, because a minority of it is not melanin
  • A plain statement that physiological pigmentation is normal and needs no treatment
  • Recurrence discussed as expected over time rather than as a complication
  • The technique chosen on the recurrence evidence, not on what equipment is in the room
  • Any gum inflammation treated first, because the tissue has to be healthy to heal evenly

You always get an honest opinion and a written plan before any treatment begins, with no pressure.

Common questions

Frequently asked questions

Are dark gums a sign of something wrong?
Usually not. Physiological melanin pigmentation is a normal variant, more common in people with darker skin, and it says nothing about gum health. What is worth showing a dentist is pigment that behaves differently from that pattern: an area that appeared recently rather than always being there, a single patch rather than a symmetrical distribution, an irregular border, or anything raised. Those are examined before any cosmetic treatment is considered, and that examination is quick.
Will the colour come back?
Some of it, over time, and how much depends partly on technique. The systematic review that compared methods reported recurrence at 0.32% for cryosurgery, 0.74% for electrosurgery and 1.16% for laser depigmentation, with bur abrasion the highest at 8.89%.[^1] Those figures are low, and they come with a caveat the authors state plainly: the review was based mainly on case reports. The honest framing is that recurrence is expected rather than surprising, because the pigment-producing cells are not removed, only the layer they had coloured.
Is laser the best method?
It is one of the three that performed well on recurrence in the published comparison, alongside cryosurgery and electrosurgery, and it sits behind both of them on that particular measure.[^1] Recurrence is not the only thing that matters, though: healing comfort, bleeding during the procedure and how precisely the depth can be controlled all count, and they differ between techniques. The method should be chosen by discussing those trade-offs rather than by which device the practice happens to own.
Does it hurt, and how long does healing take?
It is done under local anaesthesia, so the procedure itself is not painful. Afterwards the treated tissue behaves like a graze: tender for a few days, sensitive to hot and spicy food, and healing over about a fortnight as the surface epithelium regenerates. The final colour is not the colour you see in the first week. It is worth agreeing in advance not to judge the result until the tissue has fully settled.

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