I think that would only be if on lyrica long term I would think. I have looked up side effects but I certainly haven't found a link with dental issues...dry mouth yes but not dental with lyrica.
The only thing I can suggest though is perhaps you need to have a bone density scan. Osteoporosis can be a side effect of chemo (especially if we were close prior) and dental issues can be an indication of reduced bone density and leached calcium. Usually symptoms are shifting teeth or loose teeth.
Sounds like a good check up including Xrays would be a good start I guess.