Oral Health Education · Prevention
How Often Does Insurance Cover Scaling?
According to the Ministry of Health and Welfare, National Health Insurance covers one scaling every 6 months for people aged 12 and over. For certain groups the interval is relaxed to once every 3 months (90 days), covering pregnant women, people with diabetes, people with dry mouth, and higher-risk groups such as those who have had a stroke, those on dialysis, those undergoing cancer treatment, those taking anti-resorptive bone medication, and people with disabilities. Note that what the insurance covers is the procedure itself; the registration fee and the copayment are still payable at the visit.
Coverage rules
Which interval applies to you
| Who | Interval covered by insurance |
|---|---|
| General public aged 12 and over | Once every 6 months |
| Pregnant women | Once every 3 months |
| People with diabetes | Once every 3 months |
| People with dry mouth | Once every 3 months |
| People with higher-risk conditions (stroke, Parkinson's disease, dialysis, ongoing cancer treatment, use of bisphosphonates or anti-resorptive monoclonal antibody drugs, physical disability, chronic psychiatric illness and others) | Once every 3 months |
The table above is compiled from the Department of Oral Health of the Ministry of Health and Welfare together with National Health Insurance Administration rules as reposted by a local health authority. For who actually qualifies, how eligibility is determined and the conditions of coverage, rely on the latest announcement from the National Health Insurance Administration; at your visit you can ask the clinic to help confirm whether you qualify for the shorter interval.
What it actually deals with
Scaling is not about polishing the surface of the teeth
The formal name for scaling is the removal of dental calculus. Calculus forms like this: plaque produced by oral bacteria stays on the tooth surface, minerals in the saliva gradually calcify and harden it, and it ends up firmly attached to the tooth.
Once calculus has formed, no toothbrush or floss will remove it. Its rough surface instead becomes a haven for still more bacteria, irritating the gum over time so that it reddens, swells and bleeds, and possibly progressing to periodontal disease. So what scaling addresses is not appearance but the removal of that continuing source of irritation.
The extent is worth spelling out. Ordinary scaling deals with the calculus that is visible and reachable by instruments above the gum and in the shallow part of the gum sulcus. If calculus has already extended down along the root to deeper positions, what is needed is subgingival scaling and root planing, which is part of periodontal treatment and is usually carried out quadrant by quadrant, sometimes with local anaesthetic. These are two different levels of treatment, not the same thing done a little deeper.
Common misunderstandings
Three reactions after scaling, all with the same cause
These three things are often read as "the scaling has ruined my teeth", but they all point to the same cause: the space the calculus used to occupy has been cleared.
The gaps look wider
The gaps were not widened by the scaling. Those spaces were filled with calculus, and only once it is removed do they become visible — which means the gum and the bone had already receded there from long-standing inflammation. The longer the calculus had accumulated, the more obvious the change afterwards.
The teeth turn sensitive
Root surfaces that were covered by calculus are exposed again and register hot and cold. In most cases this eases over days to weeks. If it does not ease, go back so that another cause can be ruled out.
The gums bleed during scaling
Healthy gums do not bleed much during scaling. Bleeding usually means that area is already inflamed — the bleeding is the result of inflammation, not damage caused by the scaling. Once the inflammation is under control, bleeding at the next appointment is usually markedly less.
Scaling is not the same as having a full examination
Many people treat "a scaling every six months" as complete oral care, but scaling itself tells you nothing about the state of the bone. Periodontal destruction is mostly painless and invisible from outside; assessing it takes periodontal probing (measuring the depth of the gum sulcus tooth by tooth) and radiographs.
In the same way, early decay on the contact surfaces — the cavities between two adjacent teeth — is hard to find by eye or with a probe, and usually needs imaging to be seen at all.
So it is worth asking at the appointment: was a periodontal examination done this time, and when were radiographs last taken. Treat the scaling as the occasion for a regular examination rather than as the examination itself.
The interval
Is every six months a coverage rule or the optimal interval
These two things are worth separating. "Once every 6 months" is the interval at which the insurance provides coverage, not an optimum established by research.
As for what maintenance interval is most appropriate, there is no settled answer. A Cochrane systematic review examined different care regimens and intervals during periodontal maintenance and concluded that the available evidence is insufficient to determine which approach is better than another, the definitions and outcome measures across studies being inconsistent as well.
In practice, for someone whose periodontal condition is stable and whose cleaning is good, following the insurance interval is usually reasonable; whereas for someone whose calculus builds up quickly, who has a history of periodontal disease, who smokes, or whose systemic disease is poorly controlled, the dentist may advise closer monitoring. That is a judgement adjusted to individual risk, not a single standard applied to everyone.
One last note on the official advice for daily care: the Ministry of Health and Welfare recommends brushing after meals and before bed for at least 2 minutes each time, using a toothpaste containing at least 1000 ppm of fluoride. A toothbrush cannot reach between the teeth, and between the teeth is exactly where calculus and decay most often begin — which makes floss or interdental brushes necessary rather than an optional extra.
其他人也問
常見問題
How often does the insurance cover scaling?
Is scaling free?
Does scaling damage or thin the teeth?
How long does the sensitivity after scaling last?
Can scaling whiten the teeth?
Are scaling and periodontal treatment the same thing?
資料來源
本頁的主要依據
下列為本頁內容的來源。文中引用的統計數字皆為文獻或官方公開資料，反映的是整體族群，不是本診所的治療成效。
- Department of Oral Health, MOHW: prevention of periodontal disease (includes insurance coverage of one scaling every 6 months from age 12, brushing for 2 minutes and the 1000 ppm fluoride recommendation)Ministry of Health and Welfare
- Hukou Township Health Centre, Hsinchu County: scaling subsidised once every three months for older adults and special groups (reposting the four categories for which the National Health Insurance Administration has relaxed coverage)Public Health Bureau, Hsinchu County Government, 1 Jun 2026
- Manresa C et al.: supportive periodontal therapy for maintaining the dentition (Cochrane systematic review)Cochrane Database Syst Rev 2018
- Ministry of Health and Welfare: restating that periodontal treatment within the scope of insurance coverage may not be charged to the public by institutionsMinistry of Health and Welfare, 22 Mar 2013
本頁為口腔健康知識，內容不能取代醫師的當面診察。每個人的口腔狀況、病史與用藥都不同， 實際診斷與治療方式仍需由醫師依個別情況評估。
Ask first
Ask until it is clear, then decide whether to go ahead
You're welcome to ask questions by text on LINE. Assessing the actual condition of your teeth requires an in-person examination, so please book an appointment.
No sales pitch, and we will not phone you.
Look for the blue verification badge so you add the right account
The clinic’s LINE official account has passed LINE’s business review, so a blue verification badge appears next to the account name.
This badge verifies the corporate identity of the LINE account only. It says nothing about medical quality or treatment outcomes, and is not an endorsement by this site.
By appointment ｜ registration fee NT$250
Other pages
Get it clear first, then decide
What the fee is made of, what to watch out for, and what happens at the first visit.
Our dentists
Education, specialist training, professional associations and treatment scope of the four dentists — every item independently verifiable.
The clinic and its equipment
Space, equipment and infection control; the clinic participates in the NHI enhanced infection control program, with official records to verify.
Veneers and aesthetic restoration
How treatment proceeds, long-term survival figures in the literature, and the questions worth asking before deciding.
Gum health and implants
Gums are the foundation of every treatment. Includes coverage details of the NHI Integrated Periodontal Care Program.
Licensed & Registered
Government approval comes before opening
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.