Lee Chia-Hsuan, Mukundan Arvind, Chang Szu-Chien, Wang Yin-Lai, Lu Shu-Hao, Huang Yu-Cheng, Wang Hsiang-Chen
Department of Dentistry, Kaohsiung Armed Forces General Hospital, 2, Zhongzheng 1st. Rd., Kaohsiung City 80284, Taiwan.
Department of Mechanical Engineering, Advanced Institute of Manufacturing with High Tech Innovations (AIM-HI), and Center for Innovative Research on Aging Society (CIRAS), National Chung Cheng University, 168, University Rd., Min Hsiung, Chiayi 62102, Taiwan.
J Clin Med. 2021 Sep 2;10(17):3986. doi: 10.3390/jcm10173986.
Finite element analysis (FEA) has always been an important tool in studying the influences of stress and deformation due to various loads on implants to the surrounding jaws. This study assessed the influence of two different types of dental implant model on stress dissipation in adjoining jaws and on the implant itself by utilizing FEA. This analysis aimed to examine the effects of increasing the number of fences along the implant and to compare the resulting stress distribution and deformation with surrounding bones. When a vertical force of 100 N was applied, the largest displacements found in the three-fenced and single-fenced models were 1.7469 and 2.5267, respectively, showing a drop of 30.8623%. The maximum stress found in the three-fenced and one-fenced models was 13.518 and 22.365 MPa, respectively, showing a drop of 39.557%. Moreover, when an oblique force at 35° was applied, a significant increase in deformation and stress was observed. However, the three-fenced model still had less stress and deformation compared with the single-fenced model. The FEA results suggested that as the number of fences increases, the stress dissipation increases, whereas deformation decreases considerably.
有限元分析（FEA）一直是研究各种载荷作用下植入物对周围颌骨产生的应力和变形影响的重要工具。本研究利用有限元分析评估了两种不同类型的牙种植体模型对相邻颌骨及种植体本身应力消散的影响。该分析旨在研究增加种植体周围围栏数量的效果，并比较由此产生的应力分布以及与周围骨骼的变形情况。当施加100 N的垂直力时，三围栏模型和单围栏模型中发现的最大位移分别为1.7469和2.5267，下降了30.8623%。三围栏模型和单围栏模型中发现的最大应力分别为13.518和22.365 MPa，下降了39.557%。此外，当施加35°的斜向力时，观察到变形和应力显著增加。然而，与单围栏模型相比，三围栏模型的应力和变形仍然较小。有限元分析结果表明，随着围栏数量的增加，应力消散增加，而变形则显著减小。
