Objective:To establish a 3 D finite element model with better biomechanical similarity to the situation in v-ivo for the study of mandibular ramus distraction osteogenesis.

• 目的:应用有限元法建立生物相似性和力学相似性较高的下颌骨三维模型,分析并比较下颌升支部牵张成骨时不同加载方式对下颌骨内部应力分布及位移趋势的影响。