刘思 宋丽娟

    [摘要]目的：通過测量不同垂直骨面型的安氏Ⅱ1类错牙合成人患者正畸治疗前后的牙体长度，分析其矫治前后牙根吸收的差异以及切牙内收量与牙根吸收的相关性。方法：从南昌大学附属口腔医院选择60例拔牙病例，按面角不同分成三组，将其治疗前后的CBCT数据分别导入Dolphin-Imaging 11.95软件，测量双侧上下中切牙、尖牙和第一磨牙牙体长度以及上下切牙切缘和根尖的矢状向移动量，所得数据进行统计学分析。结果：治疗前左右两侧同名牙牙体长度无差异，治疗后三组牙根长度均减小(P<0.01)，上颌中切牙牙体长度高角组减小的最大，依次为均角和低角组(P<0.01)。上下切牙切缘和根尖内收量三组间差异无统计学意义(P>0.05)，左侧上颌中切牙根尖内收量与牙体长度的减少量成正相关，三组相关性分别为低角组0.663、高角组0.618、均角组0.635 (均P<0.01)。结论：不同垂直骨面型成人安氏Ⅱ1类错牙合患者拔牙矫治后均有不同程度的牙根吸收。

    [关键词]安氏Ⅱ1类错牙合畸形；骨面型；牙根吸收；拔牙矫治

    [中图分类号]R783.5? ? [文献标志码]A? ? [文章编号]1008-6455(2024)02-0123-05

    Assessment of Teeth Length Among Adult AngleⅡ1 Patients with Different Divergent Patterns after Orthodontic Treatment

    LIU Si，SONG Lijuan

    (Department of Orthodontics，Suzhou Stomatological Hospital，Suzhou 215008，Jiangsu，China)

    Abstract： Objective? The difference of root resorption before and after orthodontic treatment and the correlation between incisor sagittal movement and root resorption were analyzed by measuring the tooth length of Angle Ⅱ1 patients with different divergent patterns in adult. Methods? A total of 60 extraction cases were selected from the Affiliated Stomatological Hospital of Nanchang University ......