ultrasound and teeth regrowing

Chiron, so nice! Thank you.

There was an old lady in my father's village, who after loosing the whole adult teeth set, grew her teeth back around 100 yrs of age.
I know now, at certain places, they induce growth for individual missing teeth through ultrasound stimulation. If you happen to find out where they do it and how accessible it is, it'll be nice to know that too. :)

DL