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首页> 外文会议>National Conference on Biomedical Engineering;International Iranian Conference on Biomedical Engineering >Design and fabrication of mandibular customized implants by CAD/CAM method and 3-D printing
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Design and fabrication of mandibular customized implants by CAD/CAM method and 3-D printing

机译：CAD / CAM方法和3-D打印设计和制造下颌定制植入物

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摘要

Maxillofacial surgeons face great challenges in the reconstruction of extensive mandibular defects, especially cancer patients. The function of the mandibular reconstruction system and aesthetics are the most important factors that have a significant effect on the quality of life of patients after recovery. In this study, a customized implant was designed and implemented using additive manufacturing method to treat a patient with a lateral mandibular tumor using the CAD/CAM technique. The anatomy of the patient's mandible and the geometry of the defect site were taken into account while designing the customized implant. The reconstruction system performance was evaluated using COMSOL V5.4, a finite element method. Inclusion criteria include maximum von-Mises stress and deformation implant as well as maximum von-Mises stress and strain in cortical bone around screws. Finite element results showed that the maximum von-Mises stress of the plate was 106 MPa and plate deformation was 54.42 μm. Also, the maximum von-Mises strain and stress of cortical bone around screws were 1940 μm/m and 44 MPa, respectively. After evaluating the biomechanical behavior of the customized implant, it can be concluded that this system has sufficient flexibility and stability and the facial aesthetics will be maintained after recovery. Therefore, the success rate of surgery can be increased by using customized implants in the reconstruction of large mandibular defects while maintaining the aesthetic appearance of the patient.
机译：颌面外科医生在重建广泛的下颌缺陷，尤其是癌症患者的重建方面面临巨大挑战。下颌重建系统和美学的功能是最重要的因素，对恢复后患者的生活质量产生重大影响。在该研究中，使用添加剂制造方法设计和实施了定制植入物，以使用CAD / CAM技术对患者用横向下颌瘤治疗患者。在设计定制植入物的同时考虑患者下颌骨和缺陷部位几何形状的解剖学。使用COMSOL V5.4进行重建系统性能，是有限元方法。夹杂物标准包括最大von - 误判压力和变形植入物以及螺钉周围的皮质骨中的最大von-miss应激和菌株。有限元结果表明，板的最大von误判为106MPa，板变形为54.42μm。而且，螺钉周围的螺钉骨的最大损伤和胁迫分别为1940μm/ m和44MPa。在评估定制植入物的生物力学行为之后，可以得出结论，该系统具有足够的灵活性和稳定性，恢复后将保持面部美学。因此，通过使用定制植入物在大大下颌缺陷的重建时可以增加手术的成功率，同时保持患者的美学外观。

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