Analysis of reasons for osteonecrosis of the jaws

Purpose Osteonecroses of the jaws are caused by several reasons. Bisphosphonate-associated osteonecrosis of the jaws (BP-ONJ) is known since 2003 with an increasing incidence in the first years. Along with more knowledge about the pathophysiology, preventive strategies were implemented trying to reduce the incidence. The aim of this retrospective study was to analyze the frequency and overall proportion of BP-ONJ within the field of osteonecrosis. The data was compared to a similar study performed in 2005.