Radiology General b40f178c Osteoradionecrosis occurs at a dose of: A > 10 Gy B > 70 Gy C > 30 Gy D None of the above. High-Yield Explanation Life-Long threat: Hyposalivation Radiation caries Occurs 3 months after expose (PG1) Trismus Osteoradionecrosis > 70 Gy