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目的分析不同X线头影分析方法在正畸疗效分析中的作用。方法采用14例经Herbst矫正器治疗的II类错牙合病例治疗前后的X线头影侧位片,用Bj觟rk、Ricketts和Pancherz3种分析方法分别对所有资料进行描绘分析,使用同一参考系统,定量评价矢状面上发生的牙性和骨性变化。结果3种分析方法在统计学上都是可靠的;在评价矢状方向骨性和牙性变化上,3种方法间无显著差异;可靠性指数显示,3种分析方法均不适合于个体分析,只有Pancherz方法对群体分析有效。结论三种头影分析方法各有特点,Pancherz方法相对比较直观有效,且能进行定量分析。
Objective To analyze the role of different X-ray cephalometric analysis in orthodontic efficacy analysis. Methods 14 cases of Class II malocclusion cases treated by Herbst appliance before and after treatment were treated with Bj 觟 rk, Ricketts and Pancherz three kinds of analysis methods were used to describe all the data, using the same reference system, Quantitative evaluation of sagittal occlusion occurs on the bone and bone changes. Results All the three methods were statistically reliable. There was no significant difference between the three methods in evaluating the skeletal and dental changes in the sagittal direction. The reliability index showed that none of the three methods were suitable for individual analysis Only the Pancherz method is valid for group analysis. Conclusion The three cephalometric methods have their own characteristics. The Pancherz method is relatively straightforward and effective and can be used for quantitative analysis.