Researchers in Tokyo were able to implant a tooth germ, a set of cells genetically programmed to develop into a tooth, in a mouse. The tooth developed and erupted into the mouth. After 11 weeks the tooth seemed to function and respond to stimulus like a natural tooth. Human trials have not been done yet. The future applications can be promising.
Read full article here: http://www.pnas.org/content/early/2009/07/31/0902944106.full.pdf+html
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