Bensadoun R-J et al. - It is obvious that the use of bisphosphonates is undoubtedly beneficial in the treatment of bone complications but the incidence of ONJ during long-term treatments and at high doses warrants preventive measures. These measures are straightforward : bucco-dental repair prior to treatment, good hygiene and regular monitoring during treatment. Current, non-invasive procedures are still permitted. In other cases, the suspension of treatment is indicated until healing is complete. The increase in the incidence of ONJs, serious adverse events, raises the issue regarding duration and administration of bisphosphonate treatment in the management of bone metastases.