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"An advantage of having an electric toothbrush is the fact that it does most of the work for you.  Studies prove that brushing with an electric toothbrush produces a cleaner mouth. What&amp;#039;s inside of these machines?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://electronics.howstuffworks.com/gadgets/home/electric-toothbrush-pictures.htm>