固定正畸对骨性Ⅱ类患者后牙合平面及上牙轴倾斜度的影响.pdf

中国美容医学2014 年12 月第23 卷第24 期 Chinese Journal of Aesthetic Medicine.Dec.2014.Vol.23.No.24 2079 ·齿科美容· ·论著· 定正畸对骨性Ⅱ类患者后牙合平面及上牙轴倾斜度的影响 方志欣，周 嫣，曾庆妍，郭永明 （广西壮族自治区人民医院口腔正畸科 广西 南宁 530021） [摘要]目的：观察经固定正畸矫治的骨性Ⅱ类高角患者矫治后后牙合平面及上牙轴倾斜度的变化。方法：对13 例经直丝弓矫治技术，拔除4 颗双尖牙矫治完成的骨性Ⅱ类高角患者矫治前后的X 线头颅侧位定位片进行 相关项目的测量，结果进行统计分析。结果：治 后，后牙合平面、U1-FH 角及U7-FH 角均减少，差异有统计学意 义（＜0.05）；U5-FH 角增加，差异有统计学意义（＜0.05）。结论：骨性Ⅱ类高角患者矫治后后牙合平面陡度减 少，上颌牙牙轴由向心聚拢倾向于平行。 [关键词]骨性Ⅱ类错牙合畸形；高角；牙合平面 [中图分类号]R783.5 [文献标识码]A [文章编号]1008-6455（2014）24-2079-03 Effect of orthodontic treatment on the inclination of the posterior occlusion plane and the long axis of upper teeth in class malocclusion FANG Zhi-xin,ZHOU Yan,ZENG Qing-yan,GUO Yong-ming (Department of Orthodontics,The Peoples Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,Guangxi,China) Abstract: Obj ective To evaluate the effect of orthodontic treatment on the inclination of the posterior occlusion plane and the long axis of upper teeth in class malocclusion with vertical growth. Methods Lateral cephalograms of 13 patients of class malocclusion with vertical growth were measured in related items. All the patients were treated by straight wire appliance and 4 premolars extraction. The measurements were analyzed statistically. Results After treatment, the inclination of the posterior occlusion plane,the angle of U1 -FH and U7 -FH reduced,and the difference differed statistically （约0.05 ）.The angle of U5 -FH increased statistically too （约0.05 ）. Conclusion The posterior occlusal plane of clas