Objective: To evaluate the e ff ects of dexamethasone (DEX) and nimesulide (NIM) on Bisphosphonate-related Osteonecrosis of the Jaw (BRONJ) in rats. Design: BRONJ was induced by zoledronic acid (ZA) infusion (0.2 mg/kg) in Wistar rats (n = 8), followed by extraction of the left lower fi rst molar (BRONJ groups). Control groups (n = 40) received saline (IV). For eight weeks, DEX (0.04, 0.4, 4 mg/kg) or saline (S...