Researchers use lasers to regenerate teeth from stem cells. | Hashem Al-Ghaili

Japanese scientists test new drug to regrow teeth A drug that can regenerate teeth is set to enter human testing at Kyoto University Hospital. Following promising results in animal studies, where new teeth successfully grew in mice and ferrets, this world-first trial aims to assess the drug's efficacy and safety in human subjects. The drug functions by deactivating a protein called USAG-1, which naturally suppresses tooth growth. By blocking USAG-1, the drug triggers bone growth and, consequentl