Stress distribution and displacement of maxilla in micro-implant assisted rapid palatal expansion: A comparative three dimensional finite element analysis

Oral health Pub Date : 2018-01-01 DOI:10.35841/oral-health.2.1.13-24

R. Murugan, G. Shanmugham, B. Saravanan, Kannan Ms, N. Murugan

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引用次数: 2

Abstract

Aims & Objective This study was to analyze and compare, stress distribution and displacement of fused maxilla and circumaxillary structures between two different micro-screw assisted rapid palatal expanders (MARPE) using Finite Element Method. Materials & Methods Two different sizes of microscrew implants were used in our study. In Type 1?2 ? 10mm (Orlus implant, Ortholution, Korea ) microscrew implants was used with expansion screw and connected to the expander via INSERTION slot. In Type 2?2 ? 12mm (Orlus implant, Ortholution, Korea) micro-screw implants used with expander. Activation were done transversely for 0.25mm. Geometric non-linear theory was applied to evaluate Von-Mises stress distribution and displacement. Results The stress and strain distribution from forces applied to the circumaxillary sutures, mainly along the suture showed Type 1 had more stress and strain distribution than Type 2. In addition, Type 2 showed more amount of displacement in the midpalatal sutural region. Conclusion In conclusion, Type 2 can offer better and further skeletal expansion with increased fracture resistance and stability than Type 1.

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微种植体辅助腭快速扩张中上颌应力分布与位移的三维有限元对比分析

目的与目的应用有限元法分析比较两种不同的微螺钉辅助快速腭扩张器(MARPE)在融合上颌和腋周结构中的应力分布和位移。材料与方法采用两种不同尺寸的微螺钉种植体。是1型吗?2呢?采用10mm (Orlus implant, Ortholution, Korea)微螺钉种植体配合膨胀螺钉，通过插入槽与膨胀器连接。2型?2呢?12mm (Orlus种植体，Ortholution，韩国)微型螺钉种植体，使用扩张器。横向活化0.25mm。采用几何非线性理论计算了Von-Mises应力分布和位移。结果对腋周缝线施加的应力应变分布以沿缝线方向为主，1型比2型的应力应变分布更大。此外，2型在中腭缝合区表现出更多的位移。结论与1型相比，2型可提供更好、更深入的骨骼扩展，并增加骨折抵抗性和稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Oral health

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