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Table 2 The mean time dependent ΔE00 values and standard deviations calculated by descriptive statistics of the specimens finished with different methods and stored in red wine

From: Assessing staining resistance of a CAD/CAM interpenetrating network composite material

∆E00 HT Control HT Technical HT Clinical HT Glaze
HT Groups
 24 h 2,75 ± 0,90 a, * 1,59 ± 0,40 b 1,25 ± 0,35 b 2,59 ± 1,09 a
 7 days 3,39 ± 0,91 a, * 1,71 ± 0,51 b 1,25 ± 0,34 c, * 3,27 ± 0,64 a
 28 days 7,06 ± 1,82 a, * 2,93 ± 0,70 b, * 1,62 ± 0,85 c 5,48 ± 1,25 d, *
∆E00 T Control T Technical T Clinical T Glaze
T Groups
 24 h 2,77 ± 0,66 C 1,93 ± 0,42 A, * 2,27 ± 0,41 B 2,23 ± 0,39 B, *
 7 days 1,99 ± 0,61 B 1,56 ± 0,58 A, * 2,23 ± 0,38 B 3,23 ± 1,04 C, *
 28 days 5,31 ± 1,52 C, * 2,73 ± 1,17 A, * 3,99 ± 0,90 B, * 4,25 ± 0,59 B, *
  1. Different superscript letters point out statistically significant differences in same line according to Kruskal-Wallis and Mann-Whitney U (p < 0.05). Additionally, the group marked with * statistically different from other groups in same column according to Friedman and Wilcoxon tests (p < 0.05)