Is the 3-3-3 Brushing Rule Always True? The Surprising Origin

Have you ever heard of the 3-3-3 brushing rule: brush 3 times a day, within 3 minutes after a meal, and for at least 3 minutes?

However, it comes as rather shocking news that this 3-3-3 brushing rule lacks medical evidence.

The 3-3-3 rule is an oral hygiene campaign slogan created in Japan in the 1950s.

While it has already been phased out by health authorities in Japan, it is still being used in public service announcements and at schools in South Korea.

Experts say that properly cleaning the entire set of teeth requires about 10 to 15 minutes, not 3.

Particularly in the summer, brushing your teeth immediately after drinking carbonated beverages or ades can actually wear down the weakened tooth surface.

It is safer to first rinse your mouth with plain water and brush about 30 minutes later.

If you are short on time, it is recommended to boldly skip the front teeth, meticulously brush the chewing surfaces of the molars and the boundary between the gums and teeth, and use dental floss together.

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