Homebrew_PCBs

has anyone thought of a dental turbine?

i have seen them on ebay and i'm wodering which system they use (shaft diameter of tool).
and if they can be of any use for pcb drilling.

maybe this is just a silly idea.. all i know is they have a angled head.
my teeth are quite good, i haven't been at a dentist for quite a while..

maybe anyone knows more...

regards
stefan