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Sumita Mitra’s why our restored teeth are so strong and aesthetic © Provided by The Times of India 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. So path-breaking and impactful has been her work, that Mitra, in 2018, was inducted into the US Patent Office’s National Inventors Hall of Fame, and earlier this month, was honoured by the European Patent Office with the European Inventor Award 2021.

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