Adult teeth are present from birth, located deep in the jaw. We imagine our adult teeth grow, but it's everything else that's growing, we grow out and around the adult teeth which were always there from the beginning.

Search for x-ray pictures of children's teeth if you want to see this. It's almost nightmare fuel, but remember it's natural, this is how things are supposed to work, and that chaotic jumble of teeth will sort itself out (if not, orthodontics).

This makes me skeptical that we can just grow teeth out of nothing.