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公元前3000年古埃及人用折断的小树枝来清洁牙齿 15世纪中国人发明了用毛制成的牙刷,即将西伯利亚野猪毛制成的刷毛固定在竹子或者骨头制成的刷柄上
3000 BC Ancient Egyptians used broken branches to clean their teeth 15th century Chinese invented a toothbrush made of wool, that is, the bristles made of wild boar hair of Siberian were fixed on the handle made of bamboo or bone