Formation of Calcium Phosphate/Titanium Oxide/Titanium/ Plastic Composite Implant
Calcium phosphate/ titanium oxide/ titanium/ plastic composite implants with 1.6-mm diameter and 7-mm length were successfully formed using a DC/ RF magnetron sputtering machine. The sample had no cracks and the surface of the sample was uniformly smooth. The chemical composition of the >10-nm-thick calcium phosphate layer was Ca: P: O=1.0: 0.79: 2.8. The sample was implanted into the tibia of an male 8-week-old SD rat for 28 days. When 0.70-μm sections of the tibia were prepared, the titanium layer with titanium oxide layer of the implant was not broken and the surfaces of the layer of the implant had not decomposed. The interaction between living bone and the implant could be clearly observed by light microscope and TEM.
Kunio Ishikawa and Yukihide Iwamoto
A. Watazu et al., "Formation of Calcium Phosphate/Titanium Oxide/Titanium/ Plastic Composite Implant", Key Engineering Materials, Vols. 529-530, pp. 531-536, 2013