Dental resource - wisdom teeth.

In scouring the internet to determine whether or not a lack of medical insurance will ultimately keep me out of the Peace Corps, I came across this lovely little pdf.
Dental Review Criteria
So, any of you that have impacted wisdom teeth, scroll to page 11...if your dentist does not recommend extraction then the fact that the teeth are there is not sufficient to hold up the clearance process, it seems. They don't want to take mine out because they are concerned that it will do more harm than good for the time being.
I'm going to keep my fingers crossed on this one.
What did people do with wisdom teeth before we had the technology to remove them, anyway? Hmmm.