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(A) Visualization of the apatite layer formed on each sample under Alizarin red stain. (B) Results obtained after quantitative analysis using the UV-Vis spectrometric method at 450 nm (SpectraMax iD3 Multi-Mode Microplate Reader). Ti—Titanium; Zr—zirconium; CrPEEK—ceramic-reinforced PEEK. Scale bar: 0.3 cm. Values are mean + standard deviation, and * denotes statistical significance, p < 0.05 vs. uncoated.
