Results According to statistic analysis, there is significant difference among each group, there is certain relation between brackets bond failure and various kinds of Characters.
结果：经统计学分析，各组之间均有显著性差异，托槽的脱落与各种性格类型之间存在一定的关系。
Results According to statistic analysis, there is significant difference among each group, there is certain relation between brackets bond failure and various kinds of Characters.
结果：经统计学分析，各组之间均有显著性差异，托槽的脱落与各种性格类型之间存在一定的关系。
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