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| Groups | Mean bond strength (MPa) | Standard deviation | Maximum value | Minimum value | Statistical difference* |
|---|---|---|---|---|---|
| G1 | 16.42 | 3.61 | 22.49 | 9.43 | a |
| G2 | 9.29 | 1.95 | 13.99 | 7.21 | b |
| G3 | 22.01 | 2.15 | 26.62 | 17.98 | c |
| G4 | 22.83 | 3.32 | 27.66 | 16.51 | c |
Different letters suggest statistically significant differences as regards ANOVA/Tukey tests with significance level set at 0.05.
