口腔医学研究

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (5): 539-543.DOI: 10.13701/j.cnki.kqyxyj.2018.05.019

• 口腔正畸学研究 • 上一篇    下一篇

上颌快速扩弓对安氏Ⅱ类1分类患者颌面三维组织结构的影响

任留阳1,2, 王喜迎1, 苏家筠1, 胡瓦特·赛热克1, 熊晖1*   

  1. 1. 武汉大学口腔医院正畸一科 湖北 武汉 430079;
    2. 河南省人民医院 河南 郑州 450000
  • 收稿日期:2017-11-07 出版日期:2018-05-28 发布日期:2018-05-29
  • 通讯作者: 熊晖,E-mail:xionghui76@163.com
  • 作者简介:任留阳(1991~ ),女,河南人,硕士,医师,主要从事正畸专业的教学和临床工作。

CBCT Evaluation of Immediate Effects on Skeletal and Dental after Rapid Maxillary Expansion in Class II Division.

REN Liu-yang1,2, WANG Xi-ying1, SU Jia-yun1, HUWATE·Saireke, XIONG Hui1*   

  1. 1. Department of Orthodontics, Hospital of Stomatology, Wuhan University, Wuhan 430079, China;
    2. Henan Provincial People’s Hospital, Zhengzhou 450000, China
  • Received:2017-11-07 Online:2018-05-28 Published:2018-05-29

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摘要： 目的:研究上颌快速扩弓对安氏Ⅱ类1分类患者颌骨及牙齿的影响。方法:选取16例上牙弓狭窄的安氏Ⅱ类1分类青少年患者,使用Hyrax矫治器快速扩大上颌牙弓。将治疗前后的CBCT数据导入Dolphin 软件测量,对治疗前后数据进行配对t检验及单因素方差分析(P<0.05)。结果:上颌快速扩弓后腭中缝打开量前部较后部多。上颌骨水平向宽度显著增加,从口腔到鼻底各层面宽度增加量依次减小。矢状向上颌骨前移,下颌骨后移。垂直向没有显著变化。上下颌磨牙及上颌前磨牙间宽度增加,且发生颊向倾斜;下颌前磨牙间宽度,倾斜度无显著变化。结论:上颌快速扩弓的横向效应既有牙齿的颊向倾斜,又有腭中缝的打开,其中腭中缝前部较后部打开量大;对上下颌骨主要产生水平向和矢状向影响。

关键词: 上颌快速扩弓, 上颌骨, 下颌骨, 牙齿

Abstract: Objective: To assess skeletal and dental changes immediately after rapid maxillary expansion (RME) in Class II Division 1 malocclusion adolescent. Methods: Sixteen subjects with Class II Division 1 malocclusion and maxillary transverse deficiency underwent RME. CBCT images were collected pre-RME (T1) and post-RME (T2). Measurements were taken with Dolphin Imaging Software® 11.8. Paried t test and One-Way ANOVA (P＜0.05) was used to compare differences between T1 and T2. Results: The midpalatal suture was opened successfully in all patients with a greater magnitude anteriorly in contrast to posteriorly. Significant transverse increase were identified in maxillary with a gradual increase from teeth to nasal base after RME. The maxilla moved forward and the mandible moved backwards, but there was no difference in vertical dimension. The width and angulation of upper and lower posterior teeth increased except for lower first premolar. Conclusion: The mid-palatal suture could be opened successfully with a greater magnitude anteriorly. There was transverse and anteroposterior changes in maxilla and mandible after RME.

Key words: Rapid maxillary expansion, Maxilla, Mandible, Teeth