TNFRSF11B and osteoradionecrosis: BMD: bone mineral density; RANKL: receptor activator of nuclear factor kappa-B ligand; OPG: osteoprotegerin; ONJ: osteonecrosis of jaw; OR: osteoradionecrosis; NHANES: National Health and Nutrition Examination Survey; BMI: body mass index; CBCT: cone-beam computed tomography.