This post interests me as well, as I have been on these drugs off and on again. Like @mdr3 I have taken bisphosphonates, and been refused dental care with good reason.
If I could go back to before I started them I would make sure all my dental work was current and I kept it current before I started the bisphosphonates.
My oral surgeon had me discontinue them for a year before he would perform an extraction on a broken and painful tooth, even then I had to sign a waiver.
After this my oncologist never resumed the zometa so I walk, walk, walk to help my bones.
I tried to find out if there was a waiting period that would be safe but I could not find an answer.
My free advice would be to get your dental work ahead of starting.