> By targeting the USAG-1 gene(...)

兎 (usagi) in japanese means "rabbit", the most buck-toothy of animals. Going by the fact that they're japanese researchers, this must be a pun.

I can personally vouch that I have seen new teeth growing in a woman that was 103 years old.

I fell as a child and the damage killed two adult teeth before they could grow so I still have two baby teeth. My dentist without fail reminds me I’ll need implants eventually and I always say I’m holding out till they can just regrow my teeth. Who knows maybe my case has scar tissue that would prevent this method from working but I’ll excitedly mention this to my dentist at the next visit.

Dentists will probably lobby against this

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How the mighty have fallen.