- Impact
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(CNN) -- In a nation obsessed with sparkling teeth and minty-fresh breath, the lowly toothbrush is the king of inventions.
http://www.cnn.com/2003/TECH/ptech/01/22/toothbrush.king/index.html
http://www.cnn.com/2003/TECH/ptech/01/22/toothbrush.king/index.html