The Stages of Receding Gums: From Early to Advanced
How gum recession is staged, from the first millimetre to advanced root exposure, and what each stage means for what can be done.
- Gum recession is staged by how far the gum margin has moved and — crucially — how much attachment has been lost between the teeth.
- The modern system dentists use, the Cairo Recession Types, sorts recession by that interproximal attachment, because it determines how much root can ever be covered.
- In the earliest stage the between-teeth attachment is intact and full root coverage is realistic with treatment; in later stages only partial coverage is possible.
- No stage of recession reverses on its own — staging tells you the ceiling for surgical coverage, not a route to spontaneous regrowth.
- Because recession tends to progress, the practical value of staging is early: the earlier the stage, the more options and the better the likely outcome.
Receding gums are staged by how far the gum has pulled back and how much attachment is lost between the teeth. Dentists use the Cairo Recession Types (RT1–RT3): early recession with intact between-teeth attachment can often be fully covered by surgery, while advanced stages allow only partial coverage. No stage reverses on its own.
What actually gets measured
Staging recession is not about eyeballing how alarming it looks — it is about three measurements a dentist takes with a fine probe. The first is the recession depth: how many millimetres the gum margin sits below the enamel line where it should be. The second, and the one that matters most, is the attachment between the teeth, in the interproximal spaces. The third is how much firm, keratinised gum remains around the site. That middle measurement carries surprising weight, because the tissue between your teeth acts like the scaffolding for any future repair. If it is intact, a surgeon has something to build coverage up to; if it has been lost, the achievable ceiling drops. This is exactly why the modern classification — the Cairo Recession Types — is built around interproximal attachment rather than the visible gap alone. Two people can have the same dramatic-looking recession on the front of a tooth, yet very different outlooks, purely because of what has happened in the spaces on either side.
Staging tracks how far the margin has dropped — but the attachment between the teeth is what sets the ceiling for coverage.
What the research actually shows
Every claim below maps to a named, peer-reviewed source in the Sources section. According to PubMed.
| Claim | Evidence | Source |
|---|---|---|
| Modern staging classifies recession by interproximal attachment (Cairo RT1–RT3), which predicts how much root coverage is achievable. | Classification study. | Cairo et al., 2011 |
| In young adults, 42% already had a deep 4–8 mm recession site — advanced stages are not rare or purely age-related. | Young-adult cohort. | Seong et al., 2018 |
| About 22.5% of US adults over 30 have 3 mm or more recession, most of it on cheek-side surfaces — guiding staging by site. | NHANES III national survey. | Albandar & Kingman, 1999 |
| The best-ranked technique for covering an exposed root combines a connective-tissue graft with a coronally advanced flap — a staged surgical decision. | Network meta-analysis. | Chambrone et al., 2022 |
| Untreated, recession sites tend to advance to deeper stages over the years. | 10–27 year split-mouth study. | Agudio et al., 2009 |
The stages at a glance
| Stage | What you tend to see | Coverage outlook |
|---|---|---|
| Early / mild (RT1, intact between-teeth attachment) | 1–2 mm of exposure, slight cold sensitivity | Full coverage often possible |
| Moderate | A deeper margin, longer-looking tooth, slight notching | Partial to full, depending on the cause |
| Advanced (RT2 / RT3, interproximal loss) | Large exposure, spacing, a visible root notch | Partial coverage only |
| Any stage with active disease | Bleeding, puffiness, deep pockets | Stabilise the disease first |
| Any stage | Tissue never self-covers | Staging sets the surgical ceiling |
Why the between-teeth attachment sets the ceiling
The Cairo system sorts recession into three types, and the logic is worth understanding because it governs what is realistically possible. In Recession Type 1 (RT1) there is no attachment loss between the teeth; the scaffolding on either side is intact, and studies of root-coverage surgery show complete coverage is frequently achievable. In Type 2 (RT2) some interproximal attachment has been lost, so the achievable coverage is capped at the level of that neighbouring tissue — often partial. In Type 3 (RT3) the interproximal loss is severe, and only limited coverage is possible. Notice what this framework does and does not promise. It never describes gums growing back on their own; every route to coverage in the literature is surgical, with the best-ranked being a connective-tissue graft under a coronally advanced flap. Staging is therefore a planning tool, not a hope for spontaneous repair. Its real value is that it rewards acting early: an RT1 site caught while its scaffolding is intact has the best outlook, and every stage you let it slip narrows the options.
Evidence you can act on.
Occasional emails — new research, new protocols, no noise.
Working with your stage
Once you know your stage, the plan is to stop it advancing and protect the exposed surface, then decide on coverage with a professional. None of this treats a disease at home — it protects the tissue you still have.
- 1
Get measured
one visitAsk for your recession depth and the attachment between the teeth to be recorded. Those numbers define your Cairo type and your coverage outlook far better than appearance alone.
- 2
Stabilise the cause first
ongoingWhatever the stage, remove what is driving it — over-forceful brushing, plaque, smoking — so the site stops slipping to a deeper stage while you plan.
- 3
Protect the exposed root
dailyExposed roots are prone to sensitivity and decay; a dentist can advise on desensitising care and keeping the surface clean without abrasion.
- 4
Match coverage to your stage
consultDiscuss surgical options suited to your type — an intact RT1 site has the best chance of full coverage, while RT2/RT3 sites aim for partial improvement.
- 5
Re-measure over time
periodicBecause recession progresses silently, periodic remeasurement is how you catch a stage change early enough to act.
Your stage comes from measurements, not appearance — which is why an in-person assessment is the foundation of any plan.
Staging can only be done accurately in person, with a probe and measurements — so any recession you want to understand or act on warrants a dental or periodontal visit. See a professional promptly if a site is deepening, if you have bleeding or deep pockets, or if you are considering coverage; early stages carry the best surgical outlook. Remember that no stage grows back on its own. This article is educational and is not a diagnosis.
Frequently asked questions
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Educational purposes only. The content on this page is not medical advice and is not a substitute for consultation with a qualified dental or medical professional.
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