If you have had a broken tooth that has been restored, and that tooth gels perfectly with the adjacent ones, you should probably thank Sumita Mitra. Mitra’s work in 3M helped create the first nanotechnology-based fillings, and these have now been used in over 1 billion tooth restorations worldwide.
from Gadgets Now https://ift.tt/36uQpKn
from Gadgets Now https://ift.tt/36uQpKn
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