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- 2018
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
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Abstract:
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
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