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Brushing teeth in space
ISS Commander Chris Hadfield explains how astronauts supports oral hygiene on board the International Space Station. It turns out to wet the brush, it is necessary to squeeze out a special package with water "ball" of the liquid and "wear" it on the brush. A further cleaning process is not very different from the Earth's, except that the paste to use less space. But then paste, and water, and saliva inhabitants of the ISS have to swallow because the storage space for such wastes are not there.
Source: mirfactov.com/
