Virginia,
I battled with BC/BS to no avail. They were firm with their policy that it had to be necessary because of an accident rather then from a disease process. I had my doctors, the Ombudsman here local.........nothing, just a flat NOPE, we don't cover it. Now, if I had gone to a bar, gotten drunk, gotten in my car and wrapped that car around a tree, damaging my teeth.........it would be covered. Go figure.
Let me know if you get anywhere,
Minnie

SCC Left Mandible. Jaw replaced with bone from leg. Neck disection, 37 radiation treatments. Recurrence 8-28-07, stage 2, tongue. One third of tongue removed 10-4-07. 5-23-08 chemo started for tumor behind swallowing passage, Our good friend and much loved OCF member Minnie has been lost to the disease (RIP 10-29-08). We will all miss her greatly.