摘要
目的:建立兔下颌骨垂直及斜行骨折的三维有限元模型,为开展生物力学试验仿真提供平台。方法:采用雄性新西兰大白兔为标本,将用CT所获得的下颌骨DICOM数据通过CAD软件直接建立三维模型,并设计接骨板三维模型;将接骨板和下颌骨的三维模型进行装配,最终在FEA软件中设计骨折线的方向和间隙大小,并划分网格。结果:建立了包括骨折线方向、接骨板、骨折间隙大小等信息在内的兔下颌骨骨折的三维有限元模型。结论:建立了具有高度几何相似性的兔下颌骨骨折模型,为骨折愈合的生物力学研究奠定了基础;所采用的DICOM数据直接建模法,具有准确高效的特点。
PURPOSE： This study aimed to establish a 3-D finite element model of rabbit mandibular fracture, which will be used in biomechanics study. METHODS： Within the CAD software, the DICOM data of the CT images of the rabbit were used directly to reconstruct the 3-D model of mandible; and the mini titanium plate was designed based on the actual size, the fracture gap of the mandible was set in CAE software and fabricated with the mini titanium plate; finally, the fractured 3-D mandible model was meshed in FEA software. RESULTS： A 3-D finite element model of rabbit mandibular fracture was established, including the fracture gap, direction of fracture line and titanium plate. CONCLUSIONS= The 3-D finite element model we built featured with high geometric comparability with the mandible in vivo; the establishment method of the model is efficient and accurate.
出处
《中国口腔颌面外科杂志》
CAS
2007年第3期220-224,共5页
China Journal of Oral and Maxillofacial Surgery
基金
上海市重点学科(优势学科)建设项目(Y0203)
关键词
有限元
下颌骨
骨折
兔
Finite element
Mandible
Fracture
Rabbit
