无托槽隐形矫治器各参数对尖牙压低移动治疗的影响

发布时间：2018-12-13 10:25

【摘要】：目的研究隐形矫器不同参数(厚度、矫治位移量及弹性模量)在下颌尖牙压低移动治疗中对尖牙位移和牙周膜应力的影响。方法通过有限元方法模拟下颌尖牙在48个不同隐形矫治器模型作用下的压低治疗。结果尖牙的初始位移和牙周膜应力均与隐形矫治器厚度、压低位移和弹性模量成正比关系,隐形矫治器包含的压低位移量是对牙齿压低移动治疗影响最大的因素。在尖牙的压低移动治疗中,牙周膜压应力是最敏感最易受参数变化影响的参数。结论增大矫治器的厚度、压低位移和弹性模量可以提高尖牙的压低位移,但是同时牙周膜应力也将增大,并且牙周膜压应力增大的幅度最大。要加速无托槽隐形矫治治疗正畸牙移动,只能辅助以诸如黏贴附件、托槽弓丝矫治治疗和辅助外加种植支抗等其他附加的设备或者措施。
[Abstract]:Objective to study the effects of different parameters (thickness, displacement and modulus of elasticity) on the displacement of canine and the stress of periodontal ligament in the treatment of mandibular canine depression. Methods the depression of mandibular canine teeth was simulated by finite element method under 48 different models of invisible orthodontics. Results the initial displacement and periodontal membrane stress of canine teeth were in direct proportion to the thickness of the invisible appliance, the depression displacement and the elastic modulus, and the low displacement included in the invisible appliance was the most important factor affecting the treatment of tooth depression and movement. The pressure stress of periodontal membrane is the most sensitive and sensitive parameter in the treatment of canine depression and movement. Conclusion increasing the thickness of the appliance, lowering the displacement and modulus of elasticity can increase the pressure displacement of canine teeth, but at the same time, the stress of periodontal membrane will also increase, and the pressure stress of periodontal membrane will increase the most. To speed up orthodontic tooth movement without brackets, only additional devices or measures such as attachment, bracket wire therapy and auxiliary plus implant Anchorage are used to facilitate orthodontic tooth movement.
【作者单位】：福州大学石油化工学院;福州大学机械工程与自动化学院;
【基金】：福建省教育厅项目(2012Y4007) 福建卫生厅项目(JA11010)
【分类号】：R783.5

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