Figure 4.
Surface chemistry and structural properties of sandblasted + hydroxyapatite-coated surfaces. (A) Surface chemistry spectra for machined, sandblasted, and sandblasted + hydroxyapatite-coated surfaces obtained from an energy dispersive X-ray spectroscopy. (B) A crystallographic pattern of sandblasted + hydroxyapatite-coated surfaces obtained by X-ray diffraction. The diffractogram shows the intensity peaks corresponding to those of hydroxyapatite. (C) Crystallinity assessment by X-ray diffraction. The degree of crystallinity was determined by hydroxyapatite/aluminum oxide X-ray diffraction intensity ratio (black dots), where the hydroxyapatite/aluminum oxide ratio of the fully crystallized hydroxyapatite (hydroxyapatite sintered at 1000°C) was used as 100% standard (black square).
Abbreviations: Al, aluminum; Al2O3, aluminum oxide; Ca, calcium; HA, hydroxyapatite; O, oxygen; P, phosphorus; Ti, titanium; V, vanadium.