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歯医者さんへ行こう！ （５）白い歯と美しい口元、さわやかな息を手に入れる。

SCIENCE CHANNEL（JST）623K subscribers

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A 29-minute video from SCIENCE CHANNEL（JST）: “歯医者さんへ行こう！ （５）白い歯と美しい口元、さわやかな息を手に入れる。”.

Science & Math

Video by SCIENCE CHANNEL（JST）, played through YouTube's embedded player.