使用快速大扩展器和大骨扩展器对大扩张的应力分布和位移模式的比较:有限元模型分析:有限元模型分析
Monalisa Goswami1, Anshu Sahu1, Raghu Ranjan Prasad1
1Department of Orthodontics and Dentofacial Orthopaedics, Hazaribag College of Dental Sciences and Hospital, Demotand, Hazaribagh, Jharkhand, 825301, India.
International orthodontics
|March 27, 2025
概括
骨扩张器 (MSE) 与传统的快速骨扩张器 (RME) 相比,显示出更多的骨和牙运动,以及增加的压力. 此外,MSE还会改变牙的移位模式,并在牙扩张过程中增加牙的压力.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 头骨面部生物力学
- 生物材料是一种生物材料.
背景情况:
- 快速大扩张 (RME) 传统上是针对大低成形的.
- 带有迷你螺丝的骨扩展器 (MSE) 为RME提供了一个替代方案.
- 有关RME的生物力学影响和潜在限制存在担忧.
研究的目的:
- 为了比较RME和MSE之间的应力分布和位移模式.
- 为了评估尾骨复合体扩张的生物力学差异.
- 用3D有限元模型评估治疗结果.
主要方法:
- 创建了一个3D有限元模型的尾骨复合体.
- 该模型包括部和部牙.
- 分析了RME和MSE的压力和位移模式.
主要成果:
- 与RME相比,MSE表现出更大的骨位移,压力和牙周压力.
- 与RME相比,MSE诱导的前鼻 suture 位移较大.
- MSE导致口腔牙的移位,并增加了所有牙的压力,与RME的口腔/口腔和挤出模式不同.
结论:
- 与RME相比,MSE表现出更显著的骨和位位移和应力.
- MSE导致明显的牙移位模式和更高的牙压力.
- 在MSE和RME之间,生物机械效应和治疗结果有所不同.
相关概念视频
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
01:29Three-Dimensional Analysis of Strain
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...