Lasers can be used to trigger tooth regrowth
Very cool research! Scientists have successfully shown low level light therapy can be used to regenerate dentin (the hard part of your tooth). Thanks to digitaltrends.com for providing a great summary. For the full article check out :http://www.seas.harvard.edu/news/2014/05/researchers-use-light-to-coax-stem-cells-to-repair-teeth
