PTH and periodontitis: Figure 7C depicts representative photomicrographs of the presence of neutrophils at the maxillary ROI 1. ZOL/VEH rats with MRONJ had more neutrophils than VEH/VEH rats with periodontitis (p = 0.001; Figure 7D). In contrast, VEH/PTH rats had fewer neutrophils at the lesion site than VEH/VEH rats (p = 0.017). Similarly, ZOL/PTH rats had fewer neutrophils than ZOL/VEH rats (p < 0.001; Figure 7D).