What did these ancient dentists use? Only drills made with flint heads- no sort of foot-powered dental drills with pulleys etc. ?!

http://www.cnn.com/2006/TECH/science/04/05/prehistoric.dentistry.ap/index.html

http://news.bbc.co.uk/2/hi/science/nature/4882968.stm

That method is still taught at some schools<g>