DPBRN Retrospective Cohort Study of Osteonecrosis of the Jaw

Retrospective Cohort Study of ONJ

The purpose of this study was to determine the prevalence of ONJ in the patient population of 2 large HMOs and study the risk factors associated with the development of this condition.

The electronic database from Kaiser Permanente and HealthParnters of Minnesota were used to identify all ONJ cases that occured between 1994 and 2006 and then demographic, social and medical risk factors possibly associated with the disease were abstracted and analyzed.

Inclusion Criteria:

• ONJ sufferers and control biphosphonate users older than 40, of any gender, race and ethnic origin