Scientific Context Bisphosphonates (BP) work by slowing down bone remodelling. They are used in the management of different types of cancers and for the treatment of osteoporosis. Recent studies warned that this drug could produce adverse effects on jawbones .In December 2007, the AFSSAPS (French agency for the Sanitary Security of Health Products) alerted the health professionals about the risks of spontaneous or induced osteonecrosis following invasive odontological procedures on patients receiving BP. Prevalence of these osteonecrosis varies from 6% to 10% after surgical intervention. A healing delay estimated between 20 to 25% of cases frequently precedes the occurrence of osteochemonecrosis.