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Metabolic activity monitoring (WST1 assay) of Saos-2 cells exposed to rough surfaces (Ra = 1 µm) of ZrO2 and Y-TZP for 24 h, 72 h, and 96 h (N = 4). ANOVA: Analysis of one-factor variances (ZrO2 vs. Y-TZP vs. controls). Not Significant at 24 h, 48 h, and 96 h.
