lillizziem -
Please, please, please, check out the six articles written for the lay reader on the "treatment" page of the RSDSA site, under the heading "CRPS and Dentistry" at
http://www.rsds.org/3/treatment/index.html
Personally, I wouldn't want that kind of work done on me by anyone other than an oral surgeon, who should know how to utilize continuous regional anesthesia for the procedure, or might even bring in an anesthesiologist for that purpose. (And of course I've seen what you've gone through in trying to find an oral sugeon to date.)
Are there by any chance one or more medical/dental schools in your area? They tend to come in handy in situations like this, and are generally not afraid to tackle an "exotic" case when it comes their way. That, and they are often places where the best doctors accept the thinnest of medical/dental insurance coverage.
Good luck!
Mike