What it sounds like to me is that they hope to find a way to reactivate these genes so that lost teeth can be replaced. If they can figure out how to do this, it would put a lot of dentists out of work, because who cares about toothcare when bad teeth can be automatically replaced? Seriously though, that probably wouldn't happen, because the treatment would probably be really expensive, at least at first, and in all likelihood would need to be reapplied for every tooth lost. Still, the idea of regaining good, strong, real teeth when some are lost is appealing. Though denture-making companies will lose some business.