Oh, and when I had to remove my first two wisdom teeth I was new in this area (just arrived a couple of days before), so I picked a "dental surgeon" from the yellow pages. I got suspicious when I arrived at this old house but the guy was a very sensible and seroius looking man in his sixties so I thought everything would be ok. UHhhhh was I wrong!!!
I spent almost two hours on that chair and my legs were shaking and I was crying like a baby.

I am 99.99% sure that what he gave me was not laughing gas but just compressed air (I didn't feel any (not even the slightest) impact of the gas at all). Although the teeth had to be cut out, he did not put in any stiches and just sent me home advising me of flushing three times a day with saline water. Mistake number two!!
I am not going into the details of the infection that I got, even though I flushed at least 10 times a day and even used up all the alcohol I had in my house for the same purpose!! It took me two more trips to a (different) dentist and three (yep three) different antibiotics to get rid of it......
.... and it took me two years to get the courage to remove the other two wisdom teeth.
Half a year later a friend to whom I had told that story gave me an article from the local newspaper. The "dentist" was getting charged for practising without a lizence and four charges of malpractise!
The point of this story: always do your research before you pick a doctor/dentist!!!