How often do you brush your teeth?

你多久刷一次牙？

《柯林斯英汉双解大词典》

It's a good habit to brush your teeth after a meal.

饭后刷牙是个好习惯。

youdao

Brush your teeth with toothpaste.

用牙膏刷牙。

youdao

Make sure to brush your teeth.

记得刷牙。

Make sure 实战 - SpeakingMax英语口语达人

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"One of the worst things you can do is brush your teeth after eating sugar, " Ms Schenker said.

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They can tell you how many pounds it takes to--of force it takes to brush your teeth, you know.

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