三组间干预前后尿8-异前列烷浓度差异无统计学意义（P>0.05）。

There were no significant differences in urine 8-isoprostanes among 3 groups before or after intervention(P>0.05).

youdao

两组血流动力学变化比较差异无统计学意义。

Hemodynamic changes in the two groups no significant difference.

youdao

氟滴组和含氟牙膏组二者新增龋面均的差异无统计学意义。

There was no significant difference of the dfs reduction between fluoride drop and toothpaste group.

youdao