牙周韧带驱动的正畸牙移动重建算法。
A periodontal ligament driven remodeling algorithm for orthodontic tooth movement.
机构信息
School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006, Australia.
Faculty of Dentistry, The University of Sydney, NSW 2006, Australia.
出版信息
J Biomech. 2014 May 7;47(7):1689-95. doi: 10.1016/j.jbiomech.2014.02.030. Epub 2014 Mar 4.
While orthodontic tooth movement (OTM) gains considerable popularity and clinical success, the roles played by relevant tissues involved, particularly periodontal ligament (PDL), remain an open question in biomechanics. This paper develops a soft-tissue induced external (surface) remodeling procedure in a form of power law formulation by correlating time-dependent simulation in silico with clinical data in vivo (p<0.05), thereby providing a systematic approach for further understanding and prediction of OTM. The biomechanical stimuli, namely hydrostatic stress and displacement vectors experienced in PDL, are proposed to drive tooth movement through an iterative hyperelastic finite element analysis (FEA) procedure. This algorithm was found rather indicative and effective to simulate OTM under different loading conditions, which is of considerable potential to predict therapeutical outcomes and develop a surgical plan for sophisticated orthodontic treatment.
虽然正畸牙齿移动（OTM）获得了相当大的普及和临床成功，但相关组织（特别是牙周韧带[PDL]）所起的作用在生物力学中仍是一个悬而未决的问题。本文通过将体内临床数据与体外时变模拟相关联，以幂律形式提出了一种软组织诱导的外部（表面）重塑方法（p<0.05），从而为进一步理解和预测 OTM 提供了一种系统的方法。生物力学刺激，即 PDL 中经历的静水压力和位移向量，被提议通过迭代超弹性有限元分析（FEA）程序来驱动牙齿移动。该算法被发现非常适合在不同加载条件下模拟 OTM，这对于预测治疗效果和为复杂的正畸治疗制定手术计划具有相当大的潜力。
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