Japan is testing a drug that could make human teeth grow back naturally

Japanese researchers are currently conducting human trials on a breakthrough medicine that deactivates the proteins preventing tooth growth.

Imagine a future where losing a permanent tooth no longer means getting dentures, bridges, or expensive implants—because your body can simply grow another one.

That possibility is now being seriously explored in Japan, where scientists are currently testing a drug designed to regrow human teeth naturally.

The treatment, currently under human trials at Kyoto University Hospital, is being developed by Toregem BioPharma. Trials began in September 2024 and are still ongoing as of May 2026, with no major safety concerns reported so far. Researchers hope the treatment could become publicly available by 2030.

The biological stop signal

The drug works by blocking a protein called USAG-1, which acts like a biological “stop signal” that prevents extra teeth from developing. By removing that signal, scientists believe dormant tooth buds in the jaw can grow into actual teeth.

Animal studies involving mice, ferrets, and dogs have already shown successful tooth regrowth. Human trials are currently focused on safety, beginning with adults missing at least one molar. Future phases aim to help children born without permanent teeth.

Eventually, researchers hope the drug could help adults who lost teeth from cavities, gum disease, or injuries—potentially reducing the need for dentures and implants.

For many Filipinos, the idea feels revolutionary. In a country where dental care is expensive and missing teeth are often accepted as normal, the possibility of naturally regrowing teeth sounds less like science fiction and more like a future many would gladly smile about.