as i had a toothache in one of my molars and OH MY GOD! i have a hole in-between two teeth and he cleaned (drilled!!) this hole after spraying it with high pressure air to dry it! It was the worst things ever! It was so uncomfortable and sometimes he drilled really hard against the teeth and gums and it always hit the nerve, sending a horrible tingle around my mouth. Then he filled it with some long lasting putty. I'm glad i had it done, but fucking hell!! He didn't even tell me what he was doing, then when i heard the drill i almost ran out!