What are you afraid of?
I thought the worst thing about getting all four of mine pulled was that I had to eat mushy food (I'm a texture eater--so applesauce and the like grossed me out!) They gave me a prescription for Vicodin and the only one I took was the one they gave me before I went home that day.
Below is my account of why the procedure might ever be considered dangerous. Once again, although I was nervous, the whole thing was more of a pain in the butt than it was awful--despite the horror stories people had told me. But only read on if you're interested.
From what I remember the only "danger," if any, is when they are impacted, or you have waited until they have completely come in (for me this was not possible as my teeth are crowded and could not afford any room). The danger lies in the fact that the surgeon has to basically dig the tooth out, and the deeper they are rooted, the more likely (which isn't highly likely) s/he would be to striking the major nerve that runs along the bottom of your jawline. If this happened (very unlikely), your face might go numb on that side. I remember them explaining this to me, and also seeing the xray they took. They pointed out to me how deep my wisdom teeth were, and how far away they were from the nerve.
I'm telling you so that you know, which sometimes helps quell fear? They made me watch a video before I went into surgery. I had to sign something that in case these things ever happened, they would not be held liable, and that of course freaked me out a bit.
I don't remember what the percentages are, but again, it's very unlikely anything will go wrong. ESPECIALLY if you are young and the roots are far from the nerve.
If you're really panicking, I would suggest finding out the history of the oral surgeon-ie how many extractions s/he has done and what licenses s/he holds and so on.
*You'll be fine*