A just-right brushing habit for everyone.
We are not simply a company that makes toothbrushes.
We are working to create a society where people
can take charge of their own health.
Through original educational programs and product development,
including the N80 Method, we are bringing a new culture
of “brushing just right” to the world.
From brushing too hard
to brushing with control.
Many people brush too hard because they want
to protect their teeth.
However, clinical dentistry has shown that excessive
brushing pressure can cause gum damage,
tooth sensitivity, and gum recession.
What truly matters is controlling the pressure.
What is the N80 Method? An educational method for brushing “just right”
This grip is based on the Three-Finger Functional Model,
which assigns a distinct role to each finger:
Thumb: stabilization
Index finger: control
Middle finger: support
Clothes and shoes come in different sizes,
but toothbrushes do not.
That is why we developed a toothbrush
that can be adjusted to fit each individual hand.
- Patents granted in Japan, Taiwan, and Europe
-
Recipient of the Tool Grand Prize at the 35th Research Conference
of the Japanese Society of Medical and Dental Equipment -
Presented at the 36th South East Asia Association
for Dental Education Conference (SEAADE 2025)
A just-right brushing habit for everyone.
-
A toothbrush customized
to fit your handMeasure the distance from the tip of your middle finger
to your wrist to customize the toothbrush to your hand.
Choose and change the colors to suit your preferences.
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No extra force needed
Three fingers make gentle,
just-right brushing possibleSimply hold the custom-fit toothbrush with three fingers
to maintain the optimal brushing pressure of 80 g.
You can brush thoroughly without gripping hard,
helping to prevent tooth sensitivity and gum recession.About the weight of one small mandarin orange
- For children: build habits
-
Proper brushing habits are an asset for life.
Help children learn to brush gently from an early age. - For young adults: prevention
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Tooth sensitivity is common even in your twenties.
Review your brushing and daily habits to protect your teeth. - For working adults: efficiency
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Busy days call for short, high-quality self-care.
Preventing periodontal disease starts with what you do today. - For seniors: healthy longevity
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Oral health is connected to whole-body health.
Daily oral care is believed to help prevent aspiration pneumonia.
7 days ok Habit®
We are not a toothbrush manufacturer.
We design “preventive habits”
that people can continue naturally.
Through product development, dental education,
seminars, and preventive dentistry programs,
7 days ok Habit helps people build healthier habits.