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首页> 外文期刊>Journal of Biomechanics >In-vitro results of rapid maxillary expansion on adults compared with finite element simulations.
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In-vitro results of rapid maxillary expansion on adults compared with finite element simulations.

机译：与有限元模拟相比，成人上颌快速扩张的体外结果。

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This study was mainly performed to investigate the effects of high maxillary expansion forces on the skull with fresh and thiel-fixed human skulls. The maxillary suture was not weakened except in one experiment. This study compares the strain measured on the zygomatic process of the skull with the results of a finite element model generated for this purpose. An increasing transversal force was applied on the alveolar process (teeth) until rupture. Strain on the zygomatic process, maxilla displacement and the expanding forces were registered. The results of this study show linear material behaviour of the skull before rupture. The highest stress during the experiments and FE simulation was observed on the alveolar process. Conclusions of this study are the necessity of the existence of appropriate models and that female specimens seem to rupture at a lower force than male ones. Both male and female specimens show a similar linear behaviour in the force/strain curve within each gender group. The probability of maxillary suture opening in adults during ultra-rapid maxillary expansion with tooth anchorage is very low. Complications and unwanted rupture could occur.
机译：这项研究的主要目的是研究高上颌扩张力对新鲜和蒂尔固定的人类头骨的影响。除一项实验外，上颌缝合线未减弱。这项研究将在颅骨行过程中测得的应变与为此目的生成的有限元模型的结果进行了比较。在牙槽突（牙齿）上施加越来越大的横向力直至破裂。记录on骨过程的应变，上颌位移和扩张力。这项研究的结果显示了破裂前颅骨的线性物质行为。在肺泡过程中观察到实验和有限元模拟期间的最高应力。这项研究的结论是存在适当模型的必要性，并且女性标本的破裂力似乎低于男性。男性和女性标本在每个性别组内的力/应变曲线中均显示出相似的线性行为。在有牙锚固的超快速上颌骨扩张过程中，成人上颌缝线打开的可能性非常低。可能会发生并发症和意外破裂。

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