The jaws of the oldest-known extinct human relatives suggest an overuse of toothpicks.
via Discovery News http://news.discovery.com/history/human-ancestors-oral-hygiene-the-toothpick-131008.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/history/human-ancestors-oral-hygiene-the-toothpick-131008.htm#mkcpgn=rssnws1
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