Table 2. Mean and Standard-Deviation ζ-Potential (mV) of Enamel Powders after Different Experimental Treatments.
| ζ-potential (mV) |
||
|---|---|---|
| sample group | mean ± SD | confidence interval (95%) |
| UE | –10.373 ± 0.657f | –12.006 to −8.740 |
| Etch | –11.867 ± 0.252e | –12.850 to −9.617 |
| CSE-SE | –11.633 ± 0.404e | –12.637 to −10.629 |
| SBU-SE | –20.700 ± 0.300ab | –21.445 to −19.955 |
| ABU-SE | –19.400 ± 1.044b | –21.994 to −16.806 |
| CBQ-SE | –17.467 ± 0.322c | –18.265 to −16.668 |
| EX-SE | –21.600 ± 0.500a | –22.842 to −20.358 |
| SBU-ER | –16.567 ± 0.208cd | –17.084 to −16.050 |
| ABU-ER | –18.967 ± 1.069b | –21.623 to −16.310 |
| CBQ-ER | –15.867 ± 0.862d | –18.008 to −13.725 |
| EX-ER | –20.067 ± 0.971b | –22.479 to −17.654 |
a–f
Values with different superscript lowercase letters are significantly different (P < 0.05).