Xu T, Ahn J, Baumrind S
School of Stomatology, Beijing Medical University, Beijing 100081.
Zhonghua Kou Qiang Yi Xue Za Zhi. 1999 Jul;34(4):211-3.
To compare the conventional Wits appraisal with superimposed Wits appraisal in evaluation of sagittal jaw relationship change between pre and post orthodontic treatment.
The sample consists of 48-case pre and post treatment lateral head films. Computerized digitizing is used to get the cephalometric landmarks and measure conventional Wits value, superimposed Wits value and ANB angle. The correlation analysis among these three measures was done by SAS statistical package.
The change of ANB angle has higher correlation with the change of superimposed Wits than that of the conventional Wits. The r-value is as high as 0.849 (P < 0.001).
The superimposed Wits appraisal reflects the change of sagittal jaw relationship more objectively than the conventional one.
比较传统Wits分析法与叠加Wits分析法在评估正畸治疗前后矢状颌关系变化中的应用。
样本包括48例正畸治疗前后的头颅侧位片。采用计算机数字化技术获取头影测量标志点，并测量传统Wits值、叠加Wits值和ANB角。通过SAS统计软件对这三项测量指标进行相关性分析。
ANB角的变化与叠加Wits值变化的相关性高于与传统Wits值变化的相关性。r值高达0.849（P < 0.001）。
叠加Wits分析法比传统Wits分析法更客观地反映矢状颌关系的变化。
