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. 2012 Oct 20;13(2):71–77. doi: 10.1007/s13191-012-0190-1

Fig. 1.

Fig. 1

X-ray energy dispersive spectroscopy showing the passive layer of titanium oxide when exposed to air (presence of titanium: Ti and of oxygen elements: O). Note also the presence of the elements calcium and phosphorus after the contact of the implant with bone tissue