The resin disks were immersed in simulated body fluid (SBF) at 37 °C for 28 days to assess their non-cellular bioactivity. Images of resin disk surfaces were obtained using SEM (MIRA3, Tescan, Brno, Czech Republic) to examine the surface morphology of the resin disks before and after immersion in the SBF. X-ray diffraction (XRD) spectroscopy was performed using an Ultima IV multipurpose XRD system (Rigaku, The Woodland, TX, USA) at 40 kV and 40 mA, with a scanning speed of 0.1°/min, on the disk surfaces [40 (link),41 (link)].
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