I've got a question and I'm hoping to get a bit of advice, maybe from a
dentist here or someone with experience.  I'm 31 and just got my first
cavity because my wisdom tooth on the lower left has oblique angle and
is pressing against the tooth in front of it.  Where it is touching,
there is a cavity.  So, my dentist says I should have an oral surgeon
extract the wisdom teeth on the left side, then come back in after it
is healed to get the cavity filled.  I went for a second opinion.  The
second dentist gives the same prognosis.  But he recommended a
particular oral surgeon and said that if I coordinate, he will come to
the oral surgeon's after the extraction and do the filling while I am
under general anesthesia.

So, I have a couple of questions:
1.  Is this something that is normal?  It seems strange to me that a
doctor would work in a different doctor's office.
2.  Why would the first dentist recommend the two-step procedure
instead of a one-step procedure?
3.  Is it possible to fill a cavity on a tooth that is adjacent to a
messy and swollen gum site of extraction?

I'll check for responses here and in my email.