Scientists aim to regrow teeth using stem cells- How 3D printing can build new bones

Could the days of the root canal, for decades the symbol of the most excruciating kind of minor surgery, finally be numbered? Scientists have made advances in treating tooth decay that they hope will let them restore tooth tissue-and avoid the painful dental procedure.

http://www.foxnews.com/health/2013/07/02/no-more-root-canals-scientists-aim-to-regrow-teeth-using-stem-cells/