Hi:  Sorry about your problem, have you tried seeing an oral surgeon for another opinion?  It's hard to say if oral Boniva could cause this.  There is a small risk of having a bone disorder called Bisphosphonate-associated osteonecrosis of the jaw, but this is mostly seen in those who took the stronger more frequent intravenous cancer dose of bisphosphonates, and it's also seen in very small numbers of those taking the oral dose of these meds for prolonged periods of time.

"The symptoms are pain, soft-tissue swelling and infection, loosening of the teeth, drainage and exposed bone in the mouth (American Dental Association 2006)."  Exposed bone must be evident for 8 weeks or more for a diagnosis without prior radiation to the head or neck.

What you describe doesn't sound like the above which is usually a result of a tooth extraction or dental surgery with soft tissue damage.  Since this is rare, I would try to get another opinion on it to see if you can't find out what's going on.

Good luck and keep us posted if you need more help.