Figures 1–8. Figure 1. Unloaded implant. Bone trabeculae are in close contact with the implant surface (acid fuchsin and toluidine blue, original magnification ×18). Figure 2. Unloaded implant. Bone labeled by tetracycline is present in the bone around the implant (polarized light, original magnification ×40). Figure 3. Unloaded implant. Lines labeled by tetracycline are observed (polarized light, original magnification ×100). Figure 4. Unloaded implant. Lines labeled by tetracycline are present 2 mm from the implant surface (polarized light, original magnification ×200). Figure 5. Loaded implant. Newly formed bone is found near the implant surface. This bone is more strongly stained than preexisting bone (acid fuchsin and toluidine blue, original magnification ×20). Figure 6. Loaded implant. The fluorescence is observed in the newly formed bone near the implant surface (polarized light, original magnification ×40). Figure 7. Trabecular bone labeled by tetracycline is in direct contact with the implant surface (polarized light, original magnification ×100). Figure 8. Trabecular bone labeling by tetracycline 2 mm from the implant surface (polarized light, original magnification ×200)