不同垂直骨面型与骨性Ⅲ类错 基骨宽度之间的关系
韩泽华 ( 西安交通大学口腔医院 )
周 洪 ( 西安交通大学口腔医院 )
https://doi.org/10.37155/2661-4766-0406-59Abstract
目的: 分析成人骨性Ⅲ类错 基骨宽度特征与垂直骨面型的相关性。 方法: 采集78名男性和89名女性 的颅颌面CBCT信息,分析上下颌基底骨宽度差异,测量头颅侧位片,进行因子分析,构建结构模型方程。 结果: 骨性Ⅲ类错 基骨宽度与不同垂直骨面型存在一定相关性,分组后测量安氏Ⅲ类上下颌第二磨牙区基骨宽度差分 别是高角组为-3.23±2.89、均角组为-4.59±4.32、低角组为-5.43±2.73;上下颌磨牙后区域颌骨宽度差分别是高角组 为-7.67±4.15、均角组为-8.69±5.01、低角组为-9.89±4.65。因子分析后发现不同垂直骨面型分组中,潜变量垂直A组 中颅下颌三角的因子载荷最大,分别为高角组0.9576、均角组0.9589和低角组0.9539;其次是面高指数的均角组和低角 组因子系数,分别为0.9242、 0.9036;在垂直B组中,下面高因子系数最大,高角组为0.9201、均角组为0.8948、低角 组为0.8897。结构方程模型显示不同垂直骨面型,垂直A组与第二磨牙和磨牙后区宽度不匹配性均呈显著正相关( B > 0; P < 0.01);垂直B组与低角组磨牙后区基骨宽度不匹配性呈正相关( B = 2.742; P < 0.001); 结论: 骨性Ⅲ类错 畸形基骨宽度不调主要发生在第二磨牙区和磨牙后区;低角性患者的水平向基骨宽度不调明显。
Keywords
骨性Ⅲ类错 、垂直骨面型、基骨、结构模型方程Full Text
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