How to Brush Teeth in Space
Astronauts need good oral health to qualify for space travel but how do they maintain healthy teeth in space?
On Earth the most basic activity for keeping teeth clean is brushing— and it’s exactly the same for astronauts. But how they do that, given the weightless conditions in space. How do they rinse and where do they spit?
Canadian astronaut Chris Hadfield demonstrates how space explorers brush their teeth in this YouTube video. If astronauts in space can find a way to keep their teeth in tip-top shape, what excuses do we really have back here on Earth?