![Sohail Rana, who is in his last year as a dental student, and his team started working together in early January 2020 and officially formed their startup company — ZeroDK — in May 2020. ZeroDK, a pun on the phrase “zero decay,” combines the use of a toothbrush holder with a smartphone app that tracks how long users brush and floss their teeth.](https://pittnews.com/wp-content/uploads/2021/04/N_ZeroDK_Via-900x476.jpg)
Pitt dental student creates product to fight tooth decay
By Elizabeth Primrose, Staff Writer
• April 5, 2021
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![Opinion | Do not weigh Reddit law school forums too heavily this upcoming application cycle](https://pittnews.com/wp-content/uploads/2024/07/IMG_2208-1186x1200.jpeg)
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