不同垂直骨面型个别正常下颌骨形态及牙列特征研究

发布时间：2018-03-09 12:21

本文选题：垂直骨面型　切入点：个别正常　出处：《华西口腔医学杂志》2017年04期 　论文类型：期刊论文

【摘要】：目的比较不同垂直骨面型个别正常的差异,为临床上不同垂直骨面型人群正畸治疗目标的确定提供指导。方法采集30例个别正常成人为研究对象,根据下颌平面角FH/MP的大小分为高角组(8例)、均角组(12例)和低角组(10例)。使用DICOM数据导入Invivo5软件测量∠L1/MP、∠L6/MP、L6牙长轴交角、平面角、Balkwill角、Bonwill三角高与底之比。结果高角组和均角组∠L6/MP小于低角组,平面角大于低角组,差异具有统计学意义(P0.05);其余测量项目组间差异均无统计学意义(P0.05)。结论高角组、均角组个别正常人群平面较低角组前倾,下颌第一磨牙牙长轴在近远中方向上较低角组直立,而高角组与均角组之间无明显差异。在正畸治疗中,与高角及均角患者相比,低角患者的平面相对于眼耳平面位置更接近水平,下颌磨牙位置相对于下颌平面更向近中倾斜。
[Abstract]:Objective to compare the individual normal differences of different vertical bone facial types and to provide guidance for the determination of orthodontic treatment targets in different vertical bone facial types. Methods 30 normal adults were selected as the study objects. According to the size of mandibular plane angle, FH/MP was divided into high angle group (n = 8), mean angle group (n = 12) and low angle group (n = 10). Results the ratio of height to bottom of Bonwill triangle in high angle group and uniform angle group was lower than that in low angle group, the plane angle was larger than that in low angle group, and the difference was statistically significant (P 0.05). In the average angle group, the level of the lower angle group was lower, the long axis of the mandibular first molar teeth was upright in the near and distal direction of the lower angle group, but there was no significant difference between the high angle group and the average angle group. In orthodontic treatment, there was no significant difference between the two groups, and in orthodontic treatment, there was no significant difference between the two groups. The position of the mandibular molars is closer to the middle of the mandibular plane and the position of the lower angle is closer to the level of the eye and ear plane.
【作者单位】：中南大学湘雅医院口腔医学中心;
【基金】：中南大学自由探索计划项目(zy2016725)~~
【分类号】：R783.5

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