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| 种植体长度对天然牙-种植体联合修复体应力影响的研究 | |
| 引用本文： | 卫剑颖,聂文忠,黄远亮.种植体长度对天然牙-种植体联合修复体应力影响的研究[J].口腔颌面外科杂志,2011,21(6):414-417. |
| 作者姓名： | 卫剑颖 聂文忠 黄远亮 |
| 作者单位： | 1. 同济大学口腔医学院口腔颌面外科,上海200072;上海市浦东新区东明社区卫生服务中心口腔科,上海200130 2. 上海应用技术学院机械与自动化工程学院,上海,200235 3. 同济大学附属东方医院口腔科,上海,200120 |
| 摘 要： | 目的:建立天然牙-种植体联合支持固定桥的三维有限元模型.探讨不同种植体长度对天然牙-种植体联合支持固定桥的修复体上部结构、天然牙等应力分布的影响.方法:对模型施加200N垂直向集中的力和200N颊舌向集中的力,运用CT扫描、三维有限元分析方法等手段,对比观察不同长度的种植体对天然牙及其修复体上部结构应力分布的影响.结果... |
| 关 键 词： | 应力分析 三维有限元 牙种植体 固定桥 Von Mises应力 |
Relation of Implants Length to Stress Distribution of Tooth/Implant Supported Prostheses |
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| WEI Jian-ying,NIE Wen-zhong,HUANG Yuan-liang.Relation of Implants Length to Stress Distribution of Tooth/Implant Supported Prostheses[J].Chinese Journal of Oral and Maxillofacial Surgery,2011,21(6):414-417. | |
| Authors: | WEI Jian-ying NIE Wen-zhong HUANG Yuan-liang |
| Institution: | 1.Department of Oral and Maxillofacial Surgery,School of Stomatology,Shanghai 200072; 2.Department of Stomatology,Dongming Community Health Center,Shanghai 200130; 3.School of Mechanical and Automation Engineering,Shanghai Institute of Technology,Shanghai 200235; 4.Department of Stomatology,East Hospital,Tongji University,Shanghai 200120,China) |
| Abstract: | Objective：The aim of this study was to clarify whether the stress distribution differences in the superstructure of implants/tooth supported fixed partial denture（FPD） are related to implant length.Methods：A threedimensional finite element model was established and loading of vertical force or buccolingual force were tested.The stress distribution of the superstructure of FPD supported by tooth-implant system with implants of different length,were analyzed by CT scanning.Results：The stress distribution values of implants decreased with the increasing of implants length.The peak value of the stress distribution in abutments with buccolingual loads was 4-6 times as much as it with vertical loads.Conclusion：Mechanic complication of superstructure could be reduced by increasing implants length.So, the further improvements of press resistance of abutments and reduce oblique loads are available. |
| Keywords: | stress analysis three-dimensional finite element dental implants fixed bridge Von Mises stress |
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