Kristin Reveal October 25, 2016 Role of parathyroid hormone in regeneration of irradiated bone in a murine model of mandibular distraction osteogenesis Kristin Reveal October 25, 2016 The purpose of this study was to measure the histologic and histomorphometric effects of parathyroid hormone (PTH) treatment on irradiated bone undergoing distraction osteogenesis (DO).