| 金晶 冯雪 孙婧婧 李永刚 王为.微种植体支抗内收及压低上前牙的有限元研究[J].,2015,15(16):3038-3041 |
| 微种植体支抗内收及压低上前牙的有限元研究 |
| A Finite Element Analysis of En-mass Retraction with Vertical Traction |
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| DOI： |
| 中文关键词: 三维有限元 微种植体支抗 生物力学 |
| 英文关键词: Finite element analysis(FEA) Micro-implant anchorage(MIA) Biomechanics |
| 基金项目:陕西省科技计划项目（2012JM4036） |
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| 中文摘要: |
| 目的：探讨在利用微种植体支抗整体内收前牙过程中增加前牙区不同位置压低力对上颌前后牙的生物力学效应的影响。方
法：采用螺旋CT扫描获取图像并结合MIMICS 等软件进行三维重建，建立拔除上颌第一前磨牙整体内收前牙的三维有限元模
型，分析利用第二前磨牙与第一磨牙间微种植体整体内收前牙过程中，增加前牙区不同位置压低力后前后牙的生物力学效应。结
果：增加前牙区压低力后，前牙舌向倾斜移动明显减小，不同位置的垂直向力对前牙的影响不同，第一磨牙在整体内收过程中表
现为远中倾斜移动。结论：①增加前牙区压低力能够实现对前牙转矩的有效控制；②增加前牙区的压低力使前牙更趋向于整体移
动；③在微种植体支抗内收前牙过程实现了较好的垂直向控制。 |
| 英文摘要: |
| Objective:To investigate the biomechanical effects of en-mass retraction with different kinds of vertical traction on
maxillary teeth.Methods:A three dimensional finite element model of en-mass maxillary anterior teeth retraction force system was
constructed with CT scanning and MIMICS software, the initial displacement of maxillary teeth was calculated when adding vertical
traction between anterior teeth.Results:Lingual tipping of anterior teeth decreased with vertical traction; The different locations of
vertical force cause different effects on anterior teeth; The first molar seems to move in a way of distal tipping.Conclusion:Torque of
anterior teeth could be easily controlled when adding vertical traction; Bodily movement seems more likely to occur with vertical
traction; Vertical control was realized in en-mass retraction with micro-implant anchorage. |
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