BACKGROUND Stress relieving corticoto mies during the treatment of maxillary expansion are needed in adult patients. METHODS Three-dimensional (3D) finite element model was prepared, and finite element analysis was processed to evaluate the stress distributions within the skull and maxillary teeth during surgically assisted rapid maxillary expansion (SARME) treatment. RESULTS Expansion forces generated more stress on the corticotomy-applied part of the maxilla. The stress levels decreased dramatically above the corticotomy line. CONCLUSION Asymmetric transveral maxillary expansion might be achieved from a symmetric force generating screw during SARME treatment. SARME osteotomies may concentrate the stress in the expanding maxilla and reduce the pain in other parts of the cranium.

中文翻译：

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治疗单侧后牙反牙合的新方法：三维有限元应力分析研究。


背景技术成人患者在上颌扩张治疗期间需要进行皮质切开术来缓解压力。方法 制备三维（3D）有限元模型，并进行有限元分析，以评估手术辅助快速上颌扩张（SARME）治疗期间颅骨和上颌牙齿内的应力分布。结果 扩张力对上颌骨的皮质切开术部分产生了更大的应力。在皮质切开线以上，压力水平急剧下降。结论 在 SARME 治疗过程中，对称发力螺钉可实现不对称横向上颌扩张。 SARME 截骨术可以将压力集中在扩张的上颌骨上，并减轻颅骨其他部位的疼痛。