I have a bottom molar (last tooth in mouth) that needs to be extracted.
It has no real crown and the gum area was lengthened 5 years ago by a
periodontist to fit for a crown due to the lack of tooth to hold. Now,
5 years later, the crown is no longer held and fell off. I now have
what looks like a semi impacted tooth, that looks appears like the gum
has grown over the tooth leaving only some of the top of the tooth in
the front and rear barely exposed and the gum forming a "bridge over
the middle. There appears to be absolutlely no tooth to grasp without
digging into the gum or slicing that gum that has grown over it. My
general dentist has recommended it's removal and has x-rayed it and
said there is a gap of bone loss beneath the root.

How will my Oral Surgeon handle and perform this type of extraction?
WIll I be a candidate for simply local anethesia or do you think this
will be too major of a procedure?

FYI - I have fillings done with *no* anethesia at all.