非拔牙矫治成人安氏Ⅱ类2分类颏唇美学分析

口腔医学研究 ›› 2015, Vol. 31 ›› Issue (7): 695-698.

非拔牙矫治成人安氏Ⅱ类2分类颏唇美学分析

韦佳黛,刘建英,莫水学^*

广西医科大学附属口腔医院正畸科广西南宁 530021

收稿日期:2014-11-26 出版日期:2015-07-28 发布日期:2015-07-28
通讯作者: 莫水学,电话:0771-5358343
作者简介:韦佳黛(1988~ ),女,广西人,硕士研究生,主要从事口腔正畸临床及科研工作。
基金资助:
中华口腔医学会西部行口腔医学临床科研基金(项目号:CSA-W2013-05)

Chin and Lip Esthetic Changes Analysis in Class Ⅱ Division 2 Malocclusion of Adults Treated by Non-extraction Protocol

WEI Jia-dai, LIU Jian-ying, MO Shui-xue

Dept. of Orthodontics, College of Stomatology, Guangxi Medical University, Nanning 530021

Received:2014-11-26 Online:2015-07-28 Published:2015-07-28

摘要/Abstract

摘要： 目的:探讨非拔牙矫治对安氏Ⅱ类2分类错牙合畸形成人患者颏唇部软硬组织的美学变化及影响。方法:选择20位采用非拔牙矫治的安氏Ⅱ类2分类错牙合畸形成人患者为研究对象,使用CASSOS软件进行X线头影测量分析,比较矫治前后颏唇部美学变化。结果:U1-SN角、L1-MP角、U1-AP距、U1-NA距、L1-AP距、L1-NB距增加,U1-L1角减小。前牙牙冠代偿性唇倾以便获得良好覆牙合覆盖。LLP距、EP-LL距增加,下唇前移。结论:通过非拔牙矫治,患者不仅解除了前牙闭锁关系,而且下唇前移的变化使颏唇曲线趋于美观。

关键词: 安氏Ⅱ类2分类错牙合畸形, 头影测量, 非拔牙, 颏唇

Abstract: Objective: To investigate the soft and hard tissue esthetic changes of the chin and lip in Class Ⅱ division 2 malocclusion of adults treated by non-extraction. Methods: Twenty adult patients were enrolled and orthodontically treated without extraction. The radiographs were processed using CASSOS Image software. The data was analysed statistically to compare the soft and hard tissue esthetic changes of the chin and lip before and after the treatment. Results: After the treatment, the angles of U1-SN,L1-MP, and the distance of U1-AP,U1-NA, L1-AP,L1-NB were greater than those in pre-treatment. Meanwhile, U1-L1 decreased. Crowns of incisors were compensatorily moved close to labial side so as to acquire proper overbite and overjet. The distance of LLP,EP-LL increased obviously, and the lower lip was moved labially. Conclusion: Patients can not only relieve atresia relationship of anterior teeth but also improve the esthetic curve of chin and lip by protrusion of lower lip after non-extraction treatment.

Key words: Class Ⅱ division 2 malocclusion, Cephalometric analysis, Non-extraction, Chin and lip

中图分类号:

R783.5

韦佳黛,刘建英,莫水学. 非拔牙矫治成人安氏Ⅱ类2分类颏唇美学分析[J]. 口腔医学研究, 2015, 31(7): 695-698.

WEI Jia-dai, LIU Jian-ying, MO Shui-xue. Chin and Lip Esthetic Changes Analysis in Class Ⅱ Division 2 Malocclusion of Adults Treated by Non-extraction Protocol[J]. Journal of Oral Science Research, 2015, 31(7): 695-698.

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