My Gums Are Receding and My Teeth Look Longer — A Changdong Station Dentist's A-to-Z on Gum Recession

Hello, I'm Dr. Oh Ji-hwan of Yonsei The Strong Dental Clinic.

Many people notice it in front of the bathroom mirror. "Hang on — were my teeth always this long?" Teeth don't grow, of course; look closely and the gum has moved down, exposing part of the root. A patient from Hagye-dong said exactly that: "Nothing hurts, but one day I noticed one front tooth looking oddly long." Among those who come from the Changdong Station direction, there is a steady stream of people arriving with the same discovery. One of them, who found us by searching for a dentist in Changdong, said the most confusing part was not knowing whether this was worth a visit at all.

That confusion has a reason. Gum recession is not a condition that swells or aches — it is a change that moves quietly downward. No alarm bell of pain rings, so there is never an obvious moment to go in. Today I'll go through why gums recede, how to work out which cause applies to you, whether receded gums can be restored, what treatment and costs look like, and — above all — what to do every day so it goes no further.

What gum recession is — soil washing away, not a roof leaking

A tooth is often compared to a tree. The visible part is the trunk, the jawbone is the soil holding the roots, and the gum is the grass covering that soil. Gum recession is that grass and soil washing away together, leaving the root exposed.

Here is the first fact that matters. The crown of a tooth is covered in enamel, the hardest substance in the body — but the root surface has no enamel. The cementum covering the root and the dentine beneath it are far softer, sensitive to temperature and acid, and more vulnerable to decay. A receding gum is not merely a cosmetic issue of teeth looking longer; it means an unprotected surface has begun to face the environment of the mouth.

That is why the things people with recession experience tend to connect like this:

• Cold water and cold air sting — the fine tubules of exposed dentine carry the stimulus to the nerve
• The neck of the tooth is notched — being soft, it wears away under brushing and biting forces
• Decay appears near the root — a weaker surface decays more easily under the same conditions
• Dark triangular gaps appear between teeth — where the gum that filled the space has dropped
• Teeth look longer with a yellowish band — exposed root is naturally darker than the crown

The second fact that matters: once a gum has receded, it does not climb back on its own. Grass can be replanted, but it does not crawl uphill by itself. So treatment has two goals. One is stopping the cause so it recedes no further; the other, only where needed, is covering the exposed root surgically. The first always comes before the second.

With the principle in place, the next step is identifying why yours receded.

Comparing the causes — why did my gum recede?

In reality, two or three causes usually overlap. Someone born with thin gums who scrubs hard with a stiff brush will recede far faster than another person with the same habit. So rather than settling on one cause, the useful approach is to find every box that applies and address each one.

There is one distinction I particularly want to hand you. A gum that receded without inflammation and a gum receding because of inflammation carry different urgency. The former tends to progress slowly and can often be halted with care; the latter signals bone dissolving beneath the gum, and missing the treatment window loosens the tooth itself. I've discussed how quietly gum disease progresses in an article for Medical Today — and it is exactly why the appearance of recession should never be taken at face value.

Self-check list

• A particular tooth looks longer than its neighbours
• A yellowish band, darker than the tooth, has appeared at the gum line
• Holding cold water, a specific spot stings sharply
• Running a fingernail along the neck of the tooth, you feel a notch
• Your toothbrush splays outward in under two months (a sign of heavy force)
• Your gums bleed when brushing, or swell often
• You wake with a stiff jaw or with your teeth pressed together
• Dark triangular gaps have appeared between teeth that weren't there before
• You have had or are having orthodontic treatment
• You smoke

The first four are signs recession has already begun; the last six are signs a driving cause is still active. If both apply, there is no reason to postpone a check.

How we assess it, and the order treatment follows

A visit for gum recession usually runs like this.

1. History (about 5–10 minutes): when you noticed it, whether anything is sensitive, what brush you use and how, whether anyone has mentioned grinding or clenching. Bringing your actual toothbrush speeds this up considerably.
2. Measurement and records: we measure the recession in millimetres and probe the gum pockets to check for inflammation. These numbers become the baseline for the question "has it gone further?"
3. Radiographs: we look at the bone level beneath the gum. Whether only the gum has dropped, or the bone with it, changes the direction.
4. Cause assessment: notching at the tooth necks, heavy bite contacts, calculus, gum thickness — we work out which of the table's types are overlapping.
5. Planning (about 10–20 minutes): we separate "stopping" treatment from "covering" treatment and settle the order and cost together.

Treatment divides into three stages.

Stage one — stop the cause. Whatever the type, this is the starting point. For the inflammatory type, scaling and gum treatment clear the calculus and inflammation; for brushing damage, we switch to soft bristles and retrain grip and angle; for force and habit, we adjust heavy contacts or discuss a night guard. We never skip stage one. Cover a site while its cause is alive and the covered site recedes again.

Stage two — protect the exposed surface. If sensitivity interferes with daily life, we apply desensitising agents to the exposed root or fill notched tooth necks with tooth-coloured resin. Filling a notch is less about looks than about a protective barrier against further wear.

Stage three — cover, only where needed. When recession is deep, sensitivity cannot be controlled, a front tooth carries a visible burden, or the remaining gum is too thin to defend itself, we consider gum grafting (root coverage surgery) — typically moving a thin piece of tissue from the palate to cover the receded site. Not all recession is a surgical case: how much can be covered depends on the shape of the defect and the remaining tissue, so feasibility and the likely extent must be established by diagnosis first. Results vary between individuals.

Questions we're often asked

Q. I use sensitivity toothpaste but it still stings. Is it useless? A. Sensitivity toothpaste works cumulatively over several weeks, so a few days is too soon to judge. But if weeks pass unchanged, or one tooth alone is markedly sensitive, another cause — a notch, decay, a crack — may be hiding, and that needs checking.

Q. If I brush the receded area really thoroughly, will the gum come back? A. It will not. And if "thoroughly" means harder, it will recede further. What is needed is not strength but angle and softness. That distinction may be the most important sentence in this article.

Q. My tooth neck is notched — is filling it the end of the story? A. A filling is a shield, not a cause removed. If hard scrubbing or clenching continues, the area beside the filling wears again. Filling and habit correction are a set.

Q. My gums seem to be receding during orthodontics. Should I stop treatment? A. Not on your own judgement — the first step is sharing the gum situation with the clinic managing your orthodontics. Sometimes movement is slowed or redirected; sometimes gum reinforcement comes first.

Q. Does gum grafting hurt a lot? A. Most people describe a grazed feeling at the palate donor site for a few days, and the pain generally stays within what prescribed medication controls. Recovery and pain perception do vary between individuals.

Q. Don't gums recede with age anyway? A. Accumulated years are indeed a factor, but that doesn't make it something to leave alone. At the same age the differences with care are large — and neglected recession is precisely why root decay increases in later life.

Costs and health insurance

For recession-related care, diagnosis and inflammation treatment are broadly covered by health insurance, while covering surgery and cosmetic-purpose treatment are not.

Figures are approximate ranges that vary with the number of sites, materials and condition, and differ between clinics. Confirm actual amounts at a consultation after diagnosis.

From a cost point of view I have one thing to say. The cheapest treatment for this condition is the annual insured scaling plus corrected brushing. Caught shallow, a change of habit and a few-thousand-won toothbrush may be the whole story; caught deep, the conversation turns to surgery costing hundreds of thousands of won per site. Few areas of dentistry show a wider gap between the cost of prevention and the cost of repair.

Daily care — what to change starting today

Half of the "stopping" treatment happens not in the clinic but at your bathroom sink. By timeframe:

Today. Check your brush. If the bristles are splayed or it says "firm", switch to a small-headed soft brush. And change your grip from a fist to a pencil hold. These two things are half the response to brushing-damage recession.

This week. Learn the angle. Place the bristles at 45 degrees to the gum line and, instead of scrubbing sideways, vibrate gently in place, then sweep away. Watch in the mirror that the bristles are not splaying flat — if they splay, the force is still too much. Between the teeth is the territory of floss and interdental brushes — all the more because gaps opened by recession are exactly where a toothbrush cannot go.

This month. If you have sensitivity, pick one sensitivity toothpaste and use it consistently. After acidic drinks — fizzy drinks, fruit juice — rinse with water and wait a little rather than brushing immediately; scrubbing a root surface softened by acid is the worst combination. And if you smoke, I must say plainly: smoking reduces gum blood flow and drives both recession and gum disease.

Every six months. At the check-up we re-measure the gum figures against the baseline. Only records — never memory — can answer "has it gone further?" Pair it with the annual insured scaling and one visit covers both.

Bring the check-up forward if

• Sensitivity has spread from one tooth to several
• Gums have started bleeding, or swell more often
• A tooth feels loose
• An exposed root surface has turned brown or dark (possible root decay)
• It has visibly receded further within months

Gum grafting, if you decide on it — the week before and after

If you and your dentist decide on stage three, knowing the shape of the week around surgery makes it far less daunting.

Before. Inflammation left in place worsens the result, so gum treatment and brushing correction must be complete first. If you take medication such as antiplatelet drugs, tell us in advance — the rule is never to stop them on your own; any adjustment is decided with the prescribing doctor.

On the day. It is done under local anaesthetic, usually around an hour depending on the number of sites. If tissue is taken from the palate, a protective plate or dressing may be placed there.

First three days. The grafted site's rule is simple: leave it alone. No toothbrush on that area; manage it by holding the prescribed rinse gently. The no-straw, no-smoking, no-hard-exercise rules mirror those after implant surgery. The palate side is tender for a few days, so lukewarm, soft food is most comfortable.

Weeks one to two. Sutures are tidied and healing checked. Don't be alarmed if it still looks odd — grafted tissue takes weeks to months to settle and blend in colour, and the final appearance is judged after that.

Afterwards. What protects the covered site is, in the end, the brushing you learned in stage one. If the causal habit returns, even a grafted site can recede again. Surgery is less a full stop than a fresh start for maintenance.

Situations that differ a little

During or after orthodontics. When a tooth moves toward the thin side of the bone, the gum there can recede — not a failure of orthodontics, but a known course in people with thin gums. Pre-orthodontic gum assessment and follow-up observation are the safeguards; where it has already happened, we assess reinforcement alongside the retainer situation.

Recession around an implant. Tissue around an implant defends itself less well than around a natural tooth; once it recedes, a metal margin can show or it can progress toward peri-implantitis. Recession at implants deserves shorter observation intervals than at natural teeth.

Teeth carrying denture clasps. A tooth holding a partial denture clasp takes force daily and its gum recedes readily. It works well to bundle denture adjustment with gum observation.

By age. In the 20s–30s most recession is brushing damage, and habit correction pays off most at this age. In the 40s–50s the gum-disease type starts to mix in, making the distinction important — and it is when the invoice for years of hard scrubbing (notches, sensitivity) arrives. From the 60s, preventing root decay becomes the heart of care: decay on exposed roots often advances quietly without sensitivity, so fluoride toothpaste and regular check-ups matter even more.

Smokers. Tobacco narrows gum blood flow, pushing recession along — while also masking bleeding, the signal of inflammation, delaying discovery. Sometimes we must deliver the slightly paradoxical news that gums which are unhealthy yet never bleed may be so because of smoking.

What to look for when choosing a clinic

• Do they measure and record the gums in numbers, and compare at the next visit?
• Do they explain causes separately (brushing, inflammation, force) rather than only the result?
• Do they walk the stopping-first sequence before talk of surgery?
• Do they actually check your brush and your technique?
• Do they rule out other causes of sensitivity (cracks, decay)?
• Do they ask about background such as orthodontic or prosthetic history?

Five common reasons things go wrong

First, coping on sensitivity toothpaste alone. Symptoms are masked while recession continues — the most common combination of all.

Second, brushing "harder". Told their gums are receding, many people add force. The direction is exactly the opposite.

Third, mistaking the inflammatory type for the habit type. Changing the brush and relaxing while bone dissolves beneath the gum does happen. Only measurement and imaging can make the distinction.

Fourth, filling the notch and keeping the cause. The material endures; the area beside it wears again.

Fifth, living without records. Recession shows nothing month to month, and without numbers and photographs no one can say whether it is progressing.

In closing

Three things, then. First, gum recession advances painlessly, and the exposed root — having no enamel — leads on to sensitivity, notching and root decay, so it is never merely cosmetic. Second, a receded gum does not return on its own, but further recession can usually be stopped, and the order is always cause first (brushing, inflammation, force), with covering surgery a later option. Third, the cheapest treatment is a soft toothbrush, the annual insured scaling, and gum measurements every six months. Progression and recovery vary between individuals — so if that tooth in the mirror has been on your mind, now is the best time to set your baseline.

Today in one line: a receded gum will not climb back, but further recession can be stopped — beginning with how you hold your toothbrush tonight.

We're open until 9 p.m. on weekdays and 365 days a year, and many patients have their scaling and gum measurements done in one visit on the way home from work. Our clinic's AI phone service also runs 24 hours after treatment hours end. We're about a five-minute walk from Exit 1 of Dobong Station (toward Dobong 1-dong Post Office), near Dobong Station in Seoul, and just one stop from Changdong Station — easy to reach from Changdong and Hagye-dong. If you're driving, see our parking guide; to meet the team, see our dental team.