December 30, 2025
Brace yourselves: third set of teeth?
Humans May Be Able to Grow New Teeth Within Just 4 Years
New teeth by 2030? Internet cheers, nitpicks, and begs for hair regrowth
TLDR: Japan has begun human testing of a drug to regrow missing teeth, with wider use hoped around 2030 if it’s safe and effective. Commenters are excited but confused about timelines, worried about whether new teeth will fit right, and joking that hair restoration better be next.
Teeth that grow back? Japan says maybe — and the internet is chewing on it. A new drug using a monoclonal antibody to block a protein that stops teeth from forming is now in human testing: 30 adult men, IV drip, 11 months. If it works, doctors hope kids with missing teeth get it next, and everyone else by 2030. That’s big news for millions who can’t regrow what they lose — unlike bones, teeth don’t heal themselves.
But the comments stole the show. First came the timeline whiplash: readers flagged the article for saying trials began in September 2024 while also implying the “real” proof is yet to start — cue skeptical side‑eye. Practical crowd asked the scary question: will new teeth just slide in perfectly, matching each person’s unique bite, or are we inviting a mouthful of mayhem? Others worry about growth speed and “don’t bump it while it’s growing” mishaps. Meanwhile, biohackers flexed: one bragged about vitamin K2 and “super human chompers.” And of course, the meme of the day: “scientists can regrow everything except hair,” summing up collective envy and despair.
The vibe? Hopeful but picky. People want miracle molars, clearer timelines, and reassurance these pearly rookies won’t erupt crooked — with a bonus request: please, please fix hair next.
Key Points
- •Japanese researchers have started human trials (September 2024) of a drug intended to regrow teeth.
- •The therapy uses a monoclonal antibody that disrupts USAG‑1’s interaction with BMP to promote tooth development.
- •The initial 11‑month trial enrolls 30 males aged 30–64 missing at least one tooth, with intravenous administration.
- •Animal studies in ferrets and mice showed successful tooth growth and reported no side effects.
- •If successful, pediatric treatment (ages 2–7 with ≥4 missing teeth) and broader availability are targeted by around 2030.