http://www.seas.harvard.edu/news/201...o-repair-teeth
"Cambridge/Boston, Mass. – May 28, 2014 – A Harvard-led team is the first to demonstrate the ability to use low-power light to trigger stem cells inside the body to regenerate tissue, an advance they reported in
Science Translational Medicine. The research, led by
David J. Mooney, Robert P. Pinkas Family Professor of Bioengineering at the
Harvard School of Engineering and Applied Sciences (SEAS), lays the foundation for a host of clinical applications in restorative dentistry and regenerative medicine more broadly, such as wound healing, bone regeneration, and more."