隐形矫治中不同移动方式下颌尖牙的机械响应

发布时间：2018-03-01 03:33

本文关键词： 下颌尖牙隐形矫治有限元分析位移应力　出处：《医用生物力学》2014年06期 　论文类型：期刊论文

【摘要】：目的比较隐形矫治中下颌尖牙在不同移动方式下的机械响应。方法根据牙齿及其支持组织的计算机断层扫描图像,建立下颌前牙及牙周组织有限元模型,模拟尖牙在颊舌方向上的平移、倾斜、旋转,以获得这3种不同移动方式下尖牙及其牙周膜的位移和应力。结果尖牙的初始运动和牙周膜的应力分布主要由尖牙的运动类型决定。在平移和倾斜移动中,牙周膜的应力分布和尖牙移动趋势相似。尖牙旋转的整体移动趋势在相同的位移幅度下远远大于平移移动的整体运动趋势。结论下颌尖牙对不同移动方式的机械响应方式及程度是不同的。熟悉牙齿的这些响应的差异有助于利用不同运动方式牙齿的机械响应特点,设计更加合理的隐形矫治方案,避免损伤牙周组织,并且以最短的时间完成牙齿矫正。
[Abstract]:Objective to compare the mechanical response of mandibular canine teeth under different moving modes. Methods A finite element model of mandibular anterior teeth and periodontal tissues was established based on computed tomography images of teeth and their supporting tissues. Mimicking the translation, tilt, and rotation of canine teeth in the direction of the cheek and tongue, Results the initial movement of canine and the stress distribution of periodontal ligament are mainly determined by the movement type of canine. The stress distribution of periodontal ligament is similar to that of canine movement, and the whole movement trend of canine rotation is much larger than that of translational movement at the same displacement amplitude. These differences in response to teeth help to take advantage of the mechanical response characteristics of teeth with different movements. A more reasonable method is designed to avoid periodontal tissue damage and to complete tooth correction in the shortest time.
【作者单位】：福州大学化学化工学院;福州大学机械工程与自动化学院;
【基金】：福建省教育厅A类科技项目(JA11010)
【分类号】：R783.5

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