A group of University of Southern California School of Dentistry researchers says it has identified the slimy culprits killing the jawbones of some people taking drugs that treat osteoporosis.

The largest retrospective, observational study comparing two osteoporosis therapies on the basis of fracture reduction was presented today at the Seventh European Congress on Clinical and Economic Aspects of Osteoporosis and Osteoarthritis (ECCEO) in Porto, Portugal.