major bone loss around #6 eye tooth and area

I've been posting this topic around the web because I'm having trouble finding anyone who has dealt with it, but I know it exists because I've read some empirical (blind) studies. Here is the basic story I'd be glad to give more details if I can remembr any:

'm a 27 year old woman, who is healthy (aside from allergies) and smoke free. Nevertheless, I have had severe bone loss in the maxillary canine area. When I was about 17, I had eye tooth exposure done and the teeth brought down. about 2 years later, the orthodontist, out of the blue I might add, tells me I have major bone loss around the eye teeth. It was really shocking news and it scared me. I continued on with teh braces for a bout a year and when they came off they advised visiting an endodontist. I did that, he said bone grafts might be iffy because they might not take and told me sometimes the teeth just get held in place by the gum.

I cowardly avoided doing anything to them, and now my right (#11?) canine has stabilized, even though a little crooked) but my left one (#6?) is totally loose and decayed. I met with the dentist about it a couple weeks ago and he has advised an extraction. He said there is necrotic bone in there that needs to be washed out and says I have to let the area heal up before any grafting might be attempted. I have bone loss around my lateral incisor as well and and the maxillary bicuspid.

I'm sorry this is disjointed, I'd be happy to answer anymore questions or add details but this all scares me a lot and any advice, maybe similar stories would really help me.