Posted On: 07/05/2013 7:30:26 PM
Post# of 63866
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![[image]](http://si.wsj.net/public/resources/images/OB-YA819_lab070_A_20130701134126.jpg)
Teeth That Replace Themselves
Stem-cell research makes progress in a quest to avoid root canals and the dreaded drill at the dentist's office.
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