Here is another good news story on bisphosphonates for osteoporosis. Apparently when you take them the concentration in the bones begins to build up by the third year. Robert Marx, an oral surgeon who first alerted people to the problem three years ago, says that's why it's not surprising that there are starting to be more cases of osteonecrosis of the jaw now.
"Although Fosamax has been prescribed since 1995, usage grew dramatically about five years ago, which Marx said would explain why cases linked to that pill are only now being diagnosed. Actonel has been available since 2000, and Boniva was launched last year. Marx said he doesn't expect to see as many cases associated with those pills right now." (newhousenews.com)