Comparative Evaluation of 7 Fixation Plates in Mandibular Angle Fractures Using Finite Element Analysis

IF 0.2 Q4 EMERGENCY MEDICINE Trauma monthly Pub Date : 2020-07-01 DOI:10.30491/TM.2020.233968.1133
Ehsan Naeini, Farzin Sarkarat, Adbolreza Jamilian, M. Motamedi
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Abstract

Background: The finite element method is a used computational technique in obtaining detailed displacement of the fractured mandible with a fixation system. Objectives: The aim of the study was the evaluation of the biomechanical performance of different rigid fixation methods in mandibular angle fractures. Methods: Computed Tomography (CT) scans applied to prepare a model of the mandible with a mandibular fracture angle. The fracture line was fixed with 7 different fixation plates. The CT scans were transferred and converted to the finite element model. The commercial ANSYS software was applied to analyze the Von Mises stresses and the amount of displacement on bones, plates, and screws. 150-newton vertical force was applied to central incisors in order to simulate the most critical loading. Results: The maximum Von Mises stress values were found in the Champy technique with 474 Mpa in bones and 579 Mpa in screws, whereas the lowest Von Mises stress values observed in the square plate which was 180 Mpa. The minimum displacement observed in the Reconstructive plate & mini-plate which was 0.25 millimeters. Conclusion: The application of Reconstructive Plate & Mini-Plate, Dual straight mini-plates, Square Mini-Plate led to lower stress and displacement than other techniques in the bone, Plate, and screw.  Reconstructive Plate & Mini-Plate, Dual straight mini-plates, Square mini-plate offers more resistance and stability at the fracture site than other techniques used in the current study. This study was done based on the analysis of computer data. Clinical evidence showed that other procedures were used for many years with success. There are many other factors in the clinical application that have a critical role in stability.
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有限元分析比较评价7种固定钢板治疗下颌角骨折的疗效
背景:有限元法是一种常用的计算方法,用于获得颌骨骨折固定系统的详细位移。目的:本研究的目的是评估不同的刚性固定方法在下颌角骨折中的生物力学性能。方法:应用计算机断层扫描(CT)技术制备下颌骨骨折角度模型。用7种不同的固定钢板固定骨折线。将CT扫描图转换为有限元模型。应用商用ANSYS软件对骨、板、螺钉上的Von Mises应力和位移量进行分析。在中门牙上施加150牛顿的垂直力,以模拟最关键的载荷。结果:Champy技术的Von Mises应力值最大,骨为474 Mpa,螺钉为579 Mpa,方板的Von Mises应力值最小,为180 Mpa。在重建板和迷你板中观察到的最小位移为0.25毫米。结论:重建钢板与微型钢板、双直微型钢板、方形微型钢板的应用比其他骨、钢板和螺钉的应用具有更小的应力和位移。重建钢板和微型钢板、双直微型钢板、方形微型钢板比目前研究中使用的其他技术在骨折部位提供了更大的阻力和稳定性。这项研究是在分析计算机数据的基础上完成的。临床证据表明,其他的治疗方法已经成功使用了很多年。在临床应用中,还有许多其他因素对稳定性起着至关重要的作用。
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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来源期刊
Trauma monthly
Trauma monthly EMERGENCY MEDICINE-
CiteScore
0.60
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