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首页> 外文期刊>Computer Methods and Programs in Biomedicine: An International Journal Devoted to the Development, Implementation and Exchange of Computing Methodology and Software Systems in Biomedical Research and Medical Practice >Establishment of sequential software processing for a biomechanical model of mandibular reconstruction with custom-made plate
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Establishment of sequential software processing for a biomechanical model of mandibular reconstruction with custom-made plate

机译：定制板重建下颌骨生物力学模型的顺序软件处理方法的建立

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The aim of this study is to describe the sequential software processing of computed tomography (CT) dataset for reconstructing the finite element analysis (FEA) mandibular model with custom-made plate, and to provide a theoretical basis for clinical usage of this reconstruction method. A CT scan was done on one patient who had mandibular continuity defects. This CT dataset in DICOM format was imported into Mimics 10.0 software in which a three-dimensional (3-D) model of the facial skeleton was reconstructed and the mandible was segmented out. With Geomagic Studio 11.0, one custom-made plate and nine virtual screws were designed. All parts of the reconstructed mandible were converted into NURBS and saved as IGES format for importing into pro/. E 4.0. After Boolean operation and assembly, the model was switched to ANSYS Workbench 12.0. Finally, after applying the boundary conditions and material properties, an analysis was performed. As results, a 3-D FEA model was successfully developed using the softwares above. The stress-strain distribution precisely indicated biomechanical performance of the reconstructed mandible on the normal occlusion load, without stress concentrated areas. The Von-Mises stress in all parts of the model, from the maximum value of 50.9. MPa to the minimum value of 0.1. MPa, was lower than the ultimate tensile strength. In conclusion, the described strategy could speedily and successfully produce a biomechanical model of a reconstructed mandible with custom-made plate. Using this FEA foundation, the custom-made plate may be improved for an optimal clinical outcome.
机译：这项研究的目的是描述计算机断层扫描（CT）数据集的顺序软件处理，以用定制的钢板重建有限元分析（FEA）下颌模型，并为这种重建方法的临床应用提供理论依据。对一名患有下颌连续性缺损的患者进行了CT扫描。将此DICOM格式的CT数据集导入到Mimics 10.0软件中，在该软件中，重建了面部骨骼的三维（3-D）模型并分割了下颌骨。使用Geomagic Studio 11.0，设计了一个定制板和九个虚拟螺钉。重建的下颌骨的所有部分都转换为NURBS，并保存为IGES格式，以导入pro /。 E 4.0。布尔运算和组装后，模型切换到ANSYS Workbench 12.0。最后，在应用边界条件和材料特性之后，进行了分析。结果，使用上述软件成功开发了3-D FEA模型。应力-应变分布精确地表明了在正常咬合负荷下重建下颌骨的生物力学性能，而没有应力集中区域。模型的所有部分中的Von-Mises应力均从最大值50.9开始。 MPa最小值为0.1。 MPa，低于极限拉伸强度。总之，所描述的策略可以快速而成功地生成定制板重建下颌骨的生物力学模型。使用此FEA基础，可以改进定制板，以获得最佳临床效果。

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