Stookey’s stain in vitro tooth whitening effect evaluation results (n=3)
| Group | DE | p-value |
|---|---|---|
| Control group | 2.53±0.79a | <0.05 |
| Experimental group 1 | 9.91±3.13b | |
| Experimental group 2 | 18.03±0.96c |
Values are presented as mean±standard deviation. By the independent one-way ANOVA test at α＝0.05. a,b,c: Same letters means there is no significant difference by student’s t (p<0.05).
