不同𬌗特征对后牙种植单冠生物力学影响的有限元分析

doi:10.12337/zgkqzzxzz.2024.02.004

中国口腔种植学杂志 ›› 2024, Vol. 29 ›› Issue (1): 16-23.DOI: 10.12337/zgkqzzxzz.2024.02.004

• 口腔种植的咬合重建重点栏目 • 上一篇下一篇

不同𬌗特征对后牙种植单冠生物力学影响的有限元分析

杨锋^1,2, 王梦雅¹, 殷文杰¹, 张政¹, 陈江³

¹徐州医科大学口腔医学院,徐州 221004;
²徐州医科大学附属医院口腔科,徐州 221002;
³福建医科大学附属口腔医院,福州 350002

收稿日期:2023-12-30 出版日期:2024-02-29 发布日期:2024-03-07
通讯作者: 陈江,Email：jiangchen@fjmu.edu.cn,电话：0591-83265772
作者简介:杨锋副主任医师、口腔医学在读博士、硕士研究生导师,研究方向：牙列缺损及缺失的种植即刻修复,前牙美学修复及数字化咬合重建;陈江主任医师、教授、博士生导师,研究方向：各类牙缺失的种植治疗、各类骨缺损的骨增量种植治疗、牙列缺失的数字化种植咬合重建
基金资助:
江苏省高等学校大学生创新创业训练计划项目（202210313123Y）

Finite element analysis of the effect of different occlusal characteristics on the biomechanical behavior of posterior implant-supported single crown

Yang Feng^1,2, Wang Mengya¹, Yin Wenjie¹, Zhang Zheng¹, Chen Jiang³

¹School of Stomatology, Xuzhou Medical University, Xuzhou 221004, China;
²Department of Stomatology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China;
³School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China

Received:2023-12-30 Online:2024-02-29 Published:2024-03-07
Contact: Chen Jiang, Email: jiangchen@fjmu.edu.cn,Tel: 0086-591-83265772
Supported by:
Jiangsu Innovative Training Program of Undergraduates (202210313123Y)

摘要/Abstract

摘要： 目的通过有限元方法探究即刻负荷状态下不同𬌗特征对后牙种植单冠种植体-骨界面生物力学变化的影响,以期为临床𬌗特征的选择提供参考。方法利用过盈配合法建立即刻负荷种植义齿及周围骨组织有限元模型后,参照天然牙设计6种不同的𬌗特征,使用Ansys Workbench 2021 R2软件分别进行轴向200 N静态加载分析,对所有数据进行对比分析后,评估不同𬌗特征对种植体-骨界面位移、Von Mises应力等的影响。结果 A-B-C咬合接触可获得最小的种植体及周围骨皮质和骨松质的位移（10.52 μm、5.67 μm、9.34 μm）;修复平台咬合（3点）接触产生了最大的种植体、骨皮质、骨松质位移（15.24 μm、8.94 μm、12.15 μm）。与其他𬌗接触类型相比,A-B咬合接触产生了最大的种植体Von Mises应力（71.91 MPa）,明显降低了骨皮质和骨松质的最大Von Mises应力（18.04 MPa,17.81 MPa）。结论即刻负荷状态下不同的𬌗特征显著影响种植体-骨界面的位移及Von Mises应力分布,改变了应力集中位点;A-B-C咬合接触有利于减小种植体及周围骨组织的Von Mises应力,A-B咬合设计在𬌗力轴向传递方面略有优势。

关键词: 位移, 𬌗, 即刻负荷, Von Mises应力, 初始应力

Abstract: Objective The purpose of this study is to investigate the effect of occlusal characteristics on the biomechanical behavior of the implant-bone interface of a posterior implant-supported single crown under immediate loading, using finite element analysis. This aims to provide reference for the selection of clinical occlusal characteristics. Methods The finite element model of an implant-supported crown with immediate loading and surrounding bone was constructed using the interference fit method. Six different occlusal characteristics were designed according to natural teeth. Ansys Workbench 2021 R2 software was used to analyze the axial static loading of 200 N. All the data were evaluated using the comparative analysis method to assess the impact of different occlusal characteristics on implant-bone interface displacement and Von Mises stress. Results A-B-C occlusal contact produced the smallest displacement of the implant and surrounding cortical and cancellous bone (10.52 μm, 5.67 μm, 9.34 μm), while prosthodontic platform occlusal (3 points) contact produced the largest displacement of the implant, cortical bone, and cancellous bone (15.24μm, 8.94μm, 12.15 μm). Compared with other occlusal contact types, A-B occlusal contact produced the largest Von Mises stress in the implant (71.91 MPa), significantly reduced the maximum Von Mises stress in cortical bone and had the largest maximum Von Mises stress in cancellous bone ( 18.04 MPa, 17.81 MPa). Conclusion Different occlusal characteristics significantly affect the displacement and Von Mises stress distribution at the implant-bone interface under immediate loading, and also change the stress concentration sites. A-B-C occlusal contact is beneficial in reducing the Von Mises stress on the implant and surrounding bone tissues, while A-B occlusal design has a slight advantage in the axial transmission of occlusal force.

Key words: Displacement, Occlusion, Immediate loading, Von Mises stress, Initial stress

杨锋,王梦雅,殷文杰,等. 不同𬌗特征对后牙种植单冠生物力学影响的有限元分析[J]. 中国口腔种植学杂志, 2024, 29(1): 16-23. DOI: 10.12337/zgkqzzxzz.2024.02.004

Yang Feng, Wang Mengya, Yin Wenjie, Zhang Zheng, Chen Jiang. Finite element analysis of the effect of different occlusal characteristics on the biomechanical behavior of posterior implant-supported single crown[J].Chinese Journal of Oral Implantology, 2024, 29(1): 16-23.DOI: 10.12337/zgkqzzxzz.2024.02.004.

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不同𬌗特征对后牙种植单冠生物力学影响的有限元分析

Finite element analysis of the effect of different occlusal characteristics on the biomechanical behavior of posterior implant-supported single crown

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