Begg技术第三期治疗前后牙颌面硬软组织的变化

A hardand softtissue changes during the third stage of Begg treatment

本文对３２例拔除第一双尖牙、采用Ｂｅｇｇ技术矫正的ＡｎｇｌｅⅡ类１分类患者，比较分析Ｂｅｇｇ技术第三期治疗前后其面部硬软组织的变化。结果显示：Ｂｅｇｇ技术第三期治疗对上齿槽座点和切牙均可产生有效的移动，而对软组织外观影响甚微。提示了面部硬软组织对治疗反应的另一侧面——非同步性。文中探讨了Ｂｅｇｇ技术在第三期治疗中所起的作用。

?This study examined the effect of hardand softtissue changes during the third stage of Begg treatment.The sample consisted of 32 cases of Angle Class II div.1 with extraction of all first premolars in orthodontic treatment.The results showed that maxillary incisors,mandibular incisors,and Point A moved a significant amount following stage Ⅲ treatment.However,the softtissue changes were no significant differences,except basic upper lip thickness.It suggest that weak correlations between hardand softtissue was other aspect of orthodontic treatment.We also discussed Begg stage Ⅲ mechanics combining the findings.