16 comments

  • Fraterkes an hour ago

    Confused a bit by the article: it mentions human trials began in september 2024, but also that the trials that might prove it working are yet to start?

      magicalhippo 22 minutes ago

      I think it's just poorly written. If you go to the source[1] the trial period was planned from September 2024 to August 2025, and the submission says people are "undergoing" a trial. Perhaps it got delayed, or, more likely IMHO, the trial period is over and they're studying the data so haven't made reached a conclusion yet.

      [1]: https://www.kitano-hp.or.jp/info/20240503

  • bumblehean 23 minutes ago

    Aren't the shape/size/placement/etc. of human teeth fairly unique across different individuals? At least unique enough to use dental records to identify bodies.

    I don't see if mentioned in TFA, but if new human teeth can be grown is it expected that the new ones will just grow in "correctly" to fit a person's mouth?

      throwup238 5 minutes ago

      > At least unique enough to use dental records to identify bodies.

      Yes but in comparative dental analysis they use ante-mortem dental records to compare with post-mortem remains. It's not like DNA where you can record it once and then use that to match samples decades later in a database. In order to have a high confidence in a match, recent x-rays and records of dental work like fillings, crowns, etc. work best.

      And no it is not expected. It's one of the primary challenges with bringing these kinds of drugs to market, as hyperdontia is already relatively common among humans (I had an incisor growing at the roof of my mouth an inch behind my row of teeth). Most successful applications of these tooth regrowth drugs tend to place them near the root of missing teeth hoping that the cellular growth signaling mechanisms are still working.

      clickety_clack 21 minutes ago

      Teeth wear quite a bit too, I wonder will new ones have to be pared down to fit.

  • TylerE 10 minutes ago

    This is like fusion energy. It's been 4 years away since I've been a child.

      amelius 4 minutes ago

      I personally regrew my teeth since I was a child. Granted, once.

  • m3kw9 13 minutes ago

    Growth rate and how you don’t mess it up before it matures are problems

  • msuniverse2026 14 minutes ago

    Scientists regrowing everything except hair. Fuck my life.

      zaken 10 minutes ago

      finasteride + minoxidil

        piskov 5 minutes ago

        Once the follicle is closed/gone, it’s gone.

        Minoxidil won’t help grow hair on a patch of bold skin. After that only hair transplantation

        simmerup 5 minutes ago

        If you don't have sides that is

      xenospn 11 minutes ago

      And limbs.

        piskov a minute ago

        I would say every tissue: no bones, no organs, eyes, ears, nerves, skin.

        Like what can they grow?

  • zingababba 43 minutes ago

    I've been taking vitamin k2 mk4 at 45mg a day for over a year now. My teeth feel gr8. Now I need to get some of this stuff to have super human chompers.

      epicureanideal 37 minutes ago

      What changes in your subjective sensation of your teeth with K2?