Children's Dental Care in Japan: Fluoride, Checkups and Daily Habits

Learn how Japanese cities schedule child checkups and free dental programs, how school dental exams work, and which brushing habits and fluoride steps overseas parents can adopt.

Published October 19, 2026 at 12:01 PM JST | By Tokyo Paul

Quick answer: Japanese children's dental care combines free city programs, school dental exams and daily habits taught at home and school. Cities run health checkups at set ages, and some offer free dental checkups and fluoride treatment for young children. Brushing with fluoride toothpaste twice a day, with a parent helping young children, is the habit health bodies commonly recommend.

How children's dental care is organized

Dental care for children in Japan is shared among several settings. Cities and wards run health checkups for babies and toddlers. Some offer separate dental consultations and free checkups. Schools hold regular health examinations that include a dental exam, and families see a neighborhood dentist for treatment and ongoing care.

The Maternal and Child Health Handbook (boshi kenko techo) records checkups, growth and vaccinations, and is worth bringing to health appointments. Municipal notices arrive by mail as a child reaches each age, so keeping your address registered with the ward office matters, and so does telling the office if you move.

Because each city designs its own programs, the details differ from place to place. The ward or city office, usually its child-rearing or health division, is the best source of the current list for your neighborhood, and some offices have English guidance or interpreter support.

City health checkups at set ages

Many Japanese cities hold free health checkups for young children at fixed ages. Yokohama, for example, holds checkups at ward health and welfare centers when children are 4 months, 1 year 6 months and 3 years old, and the city sends a letter to eligible households. Under the city's guidance the checkups monitor growth and development and provide a chance to talk about child rearing. They are free of charge, though treatment a child needs is billed separately, and families can ask in advance for an interpreter.

These are often called the 1.6-year and 3-year checkups (1 sai 6 kagetsu ji kenshin and san sai ji kenshin). These two checkups are required nationwide under the Maternal and Child Health Act, and both include a dental check by a dentist, often with advice on brushing and snacks. The format, venue and any extra dental sessions are set by each city, so read the notice to see when and where the dental part takes place.

Bring the handbook and any questionnaire that arrived with the notice. Yokohama's guide suggests that the person who mainly cares for the child during the day should attend, since staff ask about the child's daily life, eating habits and routines.

Free dental programs for young children

Some cities add dental programs. Shinjuku Ward in Tokyo, for example, offers dental programs for young children. For children in a set range of birth years, the ward offers a free dental and oral health checkup with fluoride treatment at contracted dental clinics in Shinjuku, and eligible families are notified directly by the city office.

Fluoride treatment means a dentist applies a fluoride product to the teeth. The dentist or hygienist can explain what is done and how often. Because the details are not listed on every city page, ask the clinic when you book.

Programs differ from city to city in age range, cost and how families are notified. Search your city's English page for terms such as children, dental, checkup and fluoride, or ask the child-rearing division of the ward office whether such a program exists.

School dental exams

Before a child enters elementary school, a health checkup is usually held in the autumn or early winter before entry. Yokohama's guide describes the school-entry health checkup as held under the School Health and Safety Act. It includes a physical exam and an eye exam by a school doctor, a vision test by school staff, and a dental exam by a school dentist. In Yokohama it usually takes about an hour and a half to two hours on a weekday afternoon, and other cities set their own format.

After entry, schools run regular health examinations, including dental exams by a school dentist, and families commonly receive a form with the results. If the form recommends a dental visit, take it to a dentist of your choice. Schools do not provide treatment themselves.

In some Japanese schools and nurseries, children also practice tooth brushing as a group activity, which builds the habit and makes it feel normal. Where a school does this, families are asked to send a toothbrush and cup, so check the school's list of supplies.

Daily brushing and fluoride habits

The World Health Organization recommends brushing twice a day with fluoride toothpaste, and describes adequate fluoride exposure as essential for preventing tooth decay. It also advises limiting free sugars and making water the main drink. The UK National Health Service gives practical detail: start brushing as soon as teeth appear, use a tiny smear of fluoride toothpaste for children up to 3 and a pea-sized amount for ages 3 to 6, have the child spit out rather than rinse, and help until the child can brush well alone, which the NHS says is normally not before age 7.

In Japan, parents commonly finish the brushing themselves after a child has had a go, a step often called shiage-migaki. Some parents lay the child across their lap so they can see and reach every tooth. Toothpaste products for children are sold in drugstores, with age guidance on the package.

Japan generally does not add fluoride to its tap water, so toothpaste and dental office treatments are the main sources. Check the package and ask a dentist about the right toothpaste for your child's age.

Tips for overseas parents

Register your child's address early so that notices for checkups and dental programs arrive. Choose a family dentist near home, and take the child for a first visit even if there are no problems, since getting used to the setting helps later. Some dental clinics have English-speaking staff, and local government sites sometimes list clinics and dentists with foreign-language staff.

Bring your insurance card and the child's medical subsidy certificate if the city issues one. Ask whether the subsidy applies to dental treatment, since rules differ by city. Preventive care outside city programs may not be covered by insurance, so ask about costs before booking.

If you are used to a different system, ask the dental clinic how appointments, reminders and follow-up visits work, because routines differ between countries. Asking questions in a friendly way is welcome, and staff can usually explain what they are doing for the child.

Common mistakes and good habits

A common mistake is to assume baby teeth do not matter because they will fall out. Health bodies encourage caring for them from the first tooth. Another is to rinse after brushing, which washes away fluoride, so spit but do not rinse.

A third is to skip notices. Free checkups and programs are tied to age ranges, and missing the window can mean paying for the same service or waiting a year. Putting the dates from each notice into a calendar helps, and the ward office can usually say whether a missed session can be rescheduled.

Snack and drink habits matter as well. The World Health Organization advises limiting free sugars and making water the main drink, so planning sweets around mealtimes is a simple step. This guide shares general cultural information and published guidance, not professional advice; for a child's dental health, talk with a dentist or local clinic.

Frequently Asked Questions

Are children's dental checkups free in Japan?

It depends on the city. Many cities run free health checkups for toddlers, and some, such as Shinjuku Ward in Tokyo, offer a free dental checkup with fluoride treatment for young children within a set age range. Treatment of cavities is billed through health insurance, and a local children's medical subsidy may reduce the cost.

When do Japanese children start school dental exams?

The first exam is usually the school-entry health checkup held in the autumn before the child starts elementary school, which includes a dental exam by a school dentist. After entry, schools hold regular health examinations with dental checks, and parents receive results with advice about seeing a dentist.

Should I use fluoride toothpaste for my child in Japan?

The World Health Organization recommends brushing twice a day with fluoride toothpaste, and the UK National Health Service advises a smear for children up to 3 and a pea-sized amount for ages 3 to 6. Japan sells fluoride toothpaste for children. Ask a dentist for advice on the right amount.

Want to go deeper? Tokyo Paul's book Japanese Parenting Secrets That Create Calm, Independent Children is available on Amazon.

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More guides from Tokyo Paul: Infant Health Checkups in Japan: The Municipal Kenshin System, Taking a Child to the Doctor in Japan: Pediatric Clinics Explained and Childhood Vaccinations in Japan: Routine Schedule and Booking.