Do Japanese not brush their teeth?

Brushing Teeth in Japan: A Cultural Habit

In Japan, oral hygiene isn’t just a personal routine—it’s a shared social practice deeply embedded in daily life. If you’ve ever visited an office, school, or factory in Japan, you might have noticed something unusual to outsiders: rows of people brushing their teeth together after lunch. It’s not a rare sight. In fact, it’s part of a long-standing tradition that begins in childhood.

This habit is instilled early. In elementary schools, students are encouraged—and often required—to brush their teeth after lunch, usually as a group activity. Teachers sometimes use plaque-disclosing tablets, which temporarily stain plaque on teeth, helping children see what they’ve missed. It’s a practical, visual way to teach thorough brushing, turning dental care into both education and routine.

The practice doesn’t end with school. Many Japanese adults continue brushing at work or carry travel-sized toothbrushes for midday use. Convenience stores stock disposable toothbrushes next to snacks and drinks, a small but telling sign of how normalized the habit is. Unlike in many Western countries, where brushing during the day might seem excessive or private, in Japan it’s seen as considerate—both for health and social etiquette.

So, do Japanese people not brush their teeth? Quite the opposite. They often brush more frequently—and more publicly—than many other cultures. It’s not just about avoiding cavities; it’s about maintaining a standard of care that starts young and lasts a lifetime. In Japan, brushing after lunch isn’t odd—it’s ordinary.