抄録
We prepared strontium (Sr) substituted hydroxyapatite (SrHA) film at Sr concentration of 0, 20, 40, 60, 80, and 100 at.% to the HA on titanium by sputtering. The crystallinity and the Sr contents in the film were observed using X-ray diffractometer (XRD) and inductively-coupled plasma atomic emission spectrometry (ICP-AES), respectively. The bond strength to the substrate was measured using a pull-out test and the cell attachment was carried out with the osteoblast-like cells. In the XRD pattern, the peaks shifted to lower 20 values with Sr addition. In the ICP measurements, the Sr/Ca ratios in each sample almost corresponded to the target ratios. In pull-out tests, the results indicated that the bond strength of the SrHA film with Sr 40 at.% was the highest in the all sample. The number of cells showed no significant difference in the SrHA films except for Sr 40 at.%.
