Your body already knows how to grow a brand-new tooth. It's just been told to sit down and stay quiet.
Scientists in Japan are trying to change that.
Researchers at Kyoto University Hospital have launched human trials for a drug that could make your mouth regrow real teeth — no implants, no dentures, no titanium screws.
The idea is weirdly simple. A protein called USAG-1 acts like a brake, keeping a hidden third set of tooth buds frozen in place your whole life. The drug releases that brake.
It already worked in animals. Mice and ferrets grew new teeth.
Now it's people's turn. The first phase is testing safety in 30 adult men, each missing at least one tooth. Children born without a full set of teeth are next in line.
This isn't on pharmacy shelves yet. The team is aiming for general use around 2030 — so "ending dentures and implants forever" is the goal, not the guarantee.
But for the first time, regrowing a lost tooth naturally has left the realm of science fiction and walked into an actual clinic.
The future of your smile might just grow back.
Source: Toregem Biopharma / Kyoto University Hospital (research led by Dr. Katsu Takahashi)