下颌角整形术对下颌骨应力以及颞下颌关节功能的影响

目的分析基于东方经典美丽分析面罩的下颌角整形术对人体下颌骨及颞颌关节功能的影响。方法获取病人术前和术后头部CT图像数据,通过Simpleware有限元建模软件生成计算模型,利用Abaqus软件观察手术前后模型上的应力分布及数值大小。结果获得了具有良好形态的下颌骨三维有限元模型,根据在不同部位施加不同负荷模拟模型各部分的力学改变,发现手术前后下颌骨部及关节附近的应力分布有差异。结论基于东方经典美丽分析面罩的下颌角整形术,手术前后对病人的下颌骨及颞颌关节附近的应力减小。

Biomechanical analysis of the mandibular osteotomy on the function of mandibular bone and joint

Objective To analyze the effects of mandibular Osteotomy based on the Orient Classical Beauty Analysis Mask on the functions of mandibular bone and joint.Meanwhile a precise and quick method of the finite element(FE) modeling before the mandibular osteotomy was developed.Methods The CT data from the same patient pre-and post-mandibular osteotomy were obtained and imported into the ScanIP Module(Simpleware, Simpleware LTD., Exeter, UK).And after the segmentation of the interest regions, the two 3D geometrical models were built up, respectively.Then high-quality meshing was performed in the ScanFE module and the two corresponding FE models were solved in the ANSYS to obtain each stress status under the same loading.Results the 3D FE models including mandible and mandibular joint were created successfully, which kept the accurate anatomical shape.By the configuring material properties, setting the boundary conditions and loading the forces on the different areas, the mechanical status of the models under different loading conditions were simulated and shown to be un-similar.Conclusion There were obvious changes on the patient's joint functions after the mandibular Osteotomy based on Orient Classical Beauty Analysis Mask.The 3D FE modeling software Simpleware and other FE analysis solvers could be integrated to make the biomechanical analysis and the pre-operation plan.