TiO₂ Nanocoatings with Controllable Crystal Type and Nanoscale Topography on Zirconia Implants to Accelerate Bone Formation

Figure 9

Polychrome sequential fluorescent labels at 4 weeks and 12 weeks after implantation in rat femoral condyle models: 4 weeks (a) Alizarin Red S (red, 1 week) and calcein (green, 3 weeks); 12 weeks (b) Alizarin Red S (red, 4 weeks), calcein (green, 8 weeks), and tetracycline hydrochloride (yellow, 11 weeks).