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Dental health · Periodontics

Can gum disease be cured?

It depends which one you have. Gingivitis affects only the soft gum tissue, and once the plaque is thoroughly removed the inflammation usually resolves completely. Periodontitis, however, has already destroyed alveolar bone, and bone that has been lost does not grow back on its own. At that stage the goal of treatment is to halt the damage, settle the inflammation and preserve the support that remains — not to return to how things were before. How stable it can become depends on how severe the destruction is, how well any systemic conditions are controlled, and whether maintenance continues afterwards.

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Let us be precise about this

What "cured" actually means in periodontal treatment

When people say "cured", they usually picture going back to how things were. But what periodontitis destroys is the supporting structure around the tooth — the periodontal ligament and the alveolar bone. Under the consensus of the 2017 World Workshop on the classification of periodontal diseases, this kind of structural loss is an irreversible change.

So in periodontal treatment, "under control" means something specific: the gum is no longer persistently inflamed, probing no longer causes bleeding, pocket depths have returned to a range that can be cleaned, and the height of the alveolar bone is no longer dropping. Once that state is reached, the tooth can serve for many years — but its support is not the same as that of a tooth which was never affected, and it needs to be cared for differently.

This is also why periodontal treatment does not work on a "finish the course and you are done" basis. The initial phase deals with the bacteria and calculus present now, but the environment that caused the disease — plaque that re-forms every single day — does not disappear because treatment took place.

The course of treatment

Periodontal treatment usually has four stages

Not everyone goes through all four. Most people are reassessed after the second stage and move straight into maintenance.

  1. Examination and diagnosis

    A periodontal probe is used to measure sulcus depth tooth by tooth, recording whether probing causes bleeding, alongside radiographs to check the height of the alveolar bone. This step determines every judgement that follows, because the actual state of the bone cannot be seen from the outside at all.

  2. Initial therapy

    This includes removing calculus and, where pockets are deeper, subgingival debridement — clearing the calculus and bacterial deposits attached to the root surface below the gum line. Home cleaning technique is adjusted at the same time, because day-to-day cleaning is the part that decides the long-term result.

  3. Reassessment

    After initial therapy, time is allowed for the tissue to heal before pocket depths and bleeding are measured again. It is this second set of numbers that determines whether further treatment is needed — the decision about surgery is not made at the outset.

  4. Surgery where indicated, then maintenance

    If deep pockets remain that cannot be reached, procedures such as periodontal flap surgery may be needed. Whether or not surgery happens, everything ends in the maintenance phase, with recall intervals set according to individual risk and continued monitoring of pockets and bone.

Horizontal flow illustration of the four stages of periodontal treatment
The four stages of periodontal treatment: examination and diagnosis, initial therapy, reassessment, maintenance. Illustration only — not an image of any individual patient.

Costs

Where insurance cover ends and private fees begin

According to the Ministry of Health and Welfare, periodontal treatment has been covered by national health insurance since the scheme began, and clinics may not charge patients separately for items that fall within that cover.

Items
Covered by insurance Calculus removal (scaling), emergency periodontal treatment, periodontal dressing, subgingival debridement, periodontal flap surgery, gingivectomy
Integrated periodontal care programme Detailed periodontal examination, health education, full-mouth subgingival debridement, follow-up review of treatment progress
Not covered Periodontal laser treatment, guided tissue regeneration, free gingival grafts, connective tissue grafts, removal of surface stains, newer agents such as periodontal antibiotic gels, and periodontal aesthetic or desensitising treatment carried out for cosmetic purposes

The table above is compiled from a Ministry of Health and Welfare press release dated 22 March 2013. That release is now more than a decade old; for the items and conditions actually covered, please refer to the latest announcements from the National Health Insurance Administration, with a dentist determining what applies to each individual case.

The integrated periodontal care programme: worth using if you qualify

National health insurance has run an "integrated periodontal care programme" since 2010. According to the Ministry of Health and Welfare, it applies to people with periodontal inflammation affecting 16 or more teeth in the whole mouth, of which 6 or more have pocket depths of 5 mm or greater. The full course runs for six months, and each person may receive the programme once a year.

What the programme covers is a complete round of care, not a single scaling appointment. Whether you qualify can only be established by a periodontal examination first — which is another reason the first step in periodontal treatment is always measuring and imaging, rather than starting to clean straight away.

Cross-section illustration of a periodontal probe inserted between tooth and gum to measure pocket depth
A periodontal probe measures the depth of the gum sulcus. That figure, together with bone height on a radiograph, forms the two basic grounds for judging periodontal status. Illustration only — not an image of any individual patient.

What shapes the outcome

Why the same treatment produces very different results

The outcome of periodontal treatment is not decided by the treatment alone. These three matter just as visibly.

01

The quality of daily cleaning

Plaque re-attaches within hours. However thoroughly things are cleaned in the surgery, if the spaces between the teeth still go uncleaned every day, the inflammation returns to where it started. Floss or interdental brushes address exactly the sites a toothbrush cannot reach — and the sites most likely to give trouble.

02

Smoking

Tobacco affects blood flow in the gums and the healing response, making periodontal status harder to stabilise and limiting how much improvement treatment can achieve. This is one of the few risk factors a person can change themselves.

03

Control of systemic conditions

Diabetes and periodontal disease influence each other in both directions: poorly controlled blood sugar worsens periodontal status, and periodontal inflammation makes blood sugar harder to control. Addressing both together works better than attending to only one.

The maintenance phase

Why you keep coming back after treatment has finished

The real watershed in periodontal treatment is not the initial therapy but the maintenance that follows. Once pockets have become shallower, depths can creep back if nothing is monitored — and that process is usually painless, so by the time it can be felt, another stretch of bone has often been lost.

A recall appointment is not simply a scaling. It also involves measuring the pockets again, comparing them with last time, and checking whether any new deep sites have appeared. It is the change in those numbers that shows whether the ground gained is being held.

As for how often to return, there is currently no single answer that fits everyone. A Cochrane systematic review examined different maintenance approaches and concluded that the available evidence is insufficient to determine which interval or adjunctive approach is superior, with definitions and outcome measures varying between studies. In practice, therefore, intervals are adjusted by the dentist according to individual pocket depths, cleaning and risk factors, rather than applied from a single standard.

Separately, according to the Department of Oral Health, Ministry of Health and Welfare, national health insurance covers scaling once every 6 months for people aged 12 and over; specific groups such as pregnant women, people with diabetes and people with dry mouth are covered once every 3 months, which can be built into the schedule.

其他人也問

常見問題

Can gum disease be completely cured?
At the gingivitis stage it can resolve completely. Alveolar bone lost to periodontitis cannot recover on its own, so the goal of treatment is to stop the damage and maintain stability. How stable it can become depends on the extent of the destruction, any systemic conditions, and how maintenance is kept up afterwards.
How long does periodontal treatment take?
Initial therapy is usually carried out over several appointments, after which time has to be allowed for the tissue to heal before reassessment. The integrated periodontal care programme under national health insurance runs a full course over six months. The time actually needed varies with the number of teeth involved and how severe things are.
Does national health insurance cover periodontal treatment?
Yes. According to the Ministry of Health and Welfare, calculus removal, emergency periodontal treatment, periodontal dressing, subgingival debridement, periodontal flap surgery and gingivectomy are covered, and clinics may not charge separately for items within that cover. Periodontal laser treatment, guided tissue regeneration and gingival grafts fall outside it. For what applies now, please refer to the latest announcements from the National Health Insurance Administration.
What happens if gum disease is left untreated?
Periodontitis is usually painless, so it often progresses without being noticed. As alveolar bone continues to be lost, gaps widen, gums recede, and teeth loosen or shift; in severe cases teeth lose their support altogether. Bone already lost cannot recover on its own, so the earlier the intervention, the more support can be preserved.
Can gum disease be passed to family members?
The bacteria involved in periodontal disease can pass between people through saliva, but whether disease develops depends on each person's oral hygiene, immune response and risk factors — coming into contact with the bacteria does not by itself mean the disease will follow. Household members also tend to share cleaning habits, which is one reason periodontal problems often appear in several family members.
Is scaling the same as periodontal treatment?
No. Scaling removes the calculus visible above the gum line and is basic prevention and cleaning. Where deposits already extend below the gum onto the root surface, what is needed is subgingival debridement, which is a different level of treatment and requires examination and assessment first.

延伸閱讀

相關內容

Do bleeding gums mean gum disease?

The difference between gingivitis and periodontitis, and what to check yourself.

How often does insurance cover scaling?

Frequency of cover, rules for specific groups, and sensitivity afterwards.

What happens if a missing tooth is not replaced?

If a tooth cannot be saved, how to choose between the ways of replacing it.

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In Taiwan, a dental clinic may only open after it has been approved and registered by the local health authority and issued a practice license under the Medical Care Act, and every practicing dentist must hold a physician certificate issued by the Ministry of Health and Welfare. 君漾美牙醫診所 (JYM Dental Clinic) is a legally established, government-approved medical institution (medical institution code 3701028607), a National Health Insurance contracted clinic (contracted since 2021), and a participant in the NHI Administration's Integrated Periodontal Care Program and Enhanced Infection Control Program for Dental Outpatient Clinics. Every item above can be verified in official public records.