Figures 1–9. Figure 1. High intensity of vascular endothelial growth (VEGF) expression. Figure 2. Intermediate intensity of VEGF expression. Figure 3. Low intensity of VEGF expression. Figure 4. VEGF positivity of the endothelial cells lining the blood vessels (arrow) (magnification ×30). Figure 5. VEGF positivity of the stromal cells (arrow) (magnification ×30). Figure 6. VEGF positivity of the cells of the inflammatory infiltrate (arrow) (magnification ×30). Figure 7. Implant with a cemented abutment: low intensity of VEGF positivity of the endothelial cells lining the blood vessels (arrow) (magnification ×30). Figure 8. Implant with an unscrewed abutment: high intensity of the VEGF positivity of the endothelial cells lining the blood vessels (arrow) (magnification ×30). Figure 9. Implant with a screwed abutment: intermediate intensity of VEGF positivity of the endothelial cells lining the blood vessels (arrow) (magnification ×40)