Scientists are testing a drug that regrows human teeth — here’s what the research actually shows
Japanese scientists have begun human clinical trials of TRG-035 and the P26 peptide — drugs that block the USAG-1 protein to activate dormant tooth buds and potentially allow adults to grow a third set of teeth. Phase I safety trials are underway at Kyoto University Hospital, with general availability targeted for 2030 if trials succeed. Here’s what the science actually shows — and what it doesn’t yet prove.

