Shape Optimization of Bone-Bonding Subperiosteal Devices with Finite Element Analysis.
Shape Optimization of Bone-Bonding Subperiosteal Devices with Finite Element Analysis.
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DOI：
10.1155/2017/3609062
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发表时间：
2017
影响因子：
--
通讯作者：
Moriyama K
中科院分区：
文献类型：
--
作者：
Ogasawara T;Uezono M;Takakuda K;Kikuchi M;Suzuki S;Moriyama K
骨膜下骨结合装置已被提出用于微创治疗牙周病。该器械在没有固定螺钉的情况下骨整合到骨表面上，预计可快速达到成功满足临床性能的骨结合强度。因此，在本研究中通过有限元分析检查了该器械用于快速和牢固骨结合的最佳形状。首先，进行了应力分析的圆杆装置与正畸力平行的骨表面，骨结合强度的估计的基础上骨折的标准进行了验证与动物实验的结果。总共研究了四种横截面棒几何形状：圆形（Cr）、椭圆形（El）、半圆形（Sc）和矩形（Rc）。通过改变新形成骨的高度以模拟新骨形成的进展，对每种几何形状重复骨结合强度的估计。从强度的快速获得和强度本身的方面来看，具有Rc横截面的棒表现出最好的性能，其次是具有Sc、El和Cr横截面的棒。因此，矩形横截面是快速骨结合的杆状骨膜下器械的最佳选择。
Subperiosteal bone-bonding devices have been proposed for less invasive treatments in orthodontics. The device is osseointegrated onto a bone surface without fixation screws and is expected to rapidly attain a bone-bonding strength that successfully meets clinical performance. Hence, the device's optimum shape for rapid and strong bone bonding was examined in this study by finite element analyses. First, a stress analysis was performed for a circular rod device with an orthodontic force parallel to the bone surface, and the estimate of the bone-bonding strength based on the bone fracture criterion was verified with the results of an animal experiment. In total, four cross-sectional rod geometries were investigated: circular (Cr), elliptical (El), semicircular (Sc), and rectangular (Rc). By changing the height of the newly formed bone to mimic the progression of new bone formation, the estimation of the bone-bonding strength was repeated for each geometry. The rod with the Rc cross section exhibited the best performance, followed by those with the Sc, El, and Cr cross sections, from the aspects of the rapid acquisition of strength and the strength itself. Thus, the rectangular cross section is the best for rod-like subperiosteal devices for rapid bone bonding.
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