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本文引用的文献

1
Effects of mesiodistal inclination of implants on stress distribution in implant-supported fixed prostheses.种植体近远中倾斜对种植体支持固定修复体应力分布的影响。
Int J Oral Maxillofac Implants. 2006 Jan-Feb;21(1):36-44.
2
Role of the finite element model in dental implants.有限元模型在牙种植体中的作用。
J Oral Implantol. 2000;26(2):77-81. doi: 10.1563/1548-1336(2000)026<0077:TROTFE>2.3.CO;2.
3
Use of microfocus computerized tomography as a new technique for characterizing bone tissue around oral implants.使用微焦点计算机断层扫描作为表征口腔种植体周围骨组织的新技术。
J Oral Implantol. 2000;26(1):5-12. doi: 10.1563/1548-1336(2000)026<0005:TUOMCT>2.3.CO;2.
4
Evaluation of the effect of the residual bone angulation on implant-supported fixed prosthesis in mandibular posterior edentulism. Part II: 3-D finite element stress analysis.下颌后牙区牙列缺失时剩余骨角度对种植支持式固定修复体影响的评估。第二部分:三维有限元应力分析
Implant Dent. 2001;10(4):238-45. doi: 10.1097/00008505-200110000-00006.
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Evaluation of the effect of the residual bone angulation on implant-supported fixed prostheses in mandibular posterior edentulism. Part I: Spiral computed tomography study.下颌后牙区牙列缺失时剩余骨角度对种植支持固定义齿影响的评估。第一部分:螺旋计算机断层扫描研究。
Implant Dent. 2001;10(3):216-22. doi: 10.1097/00008505-200107000-00017.
6
Tilting of posterior mandibular and maxillary implants for improved prosthesis support.倾斜下颌后部和上颌种植体以改善假体支撑。
Int J Oral Maxillofac Implants. 2000 May-Jun;15(3):405-14.
7
Influence of restoration type on stress distribution in bone around implants: a three-dimensional finite element analysis.修复类型对种植体周围骨组织应力分布的影响:三维有限元分析
Int J Oral Maxillofac Implants. 1998 Jan-Feb;13(1):82-90.
8
Comparison of load transfer by implant abutments of various diameters.不同直径种植体基台的负荷转移比较。
Eur J Prosthodont Restor Dent. 1997 Jun;5(2):79-83.
9
Load factor control for implants in the posterior partially edentulous segment.后牙部分牙列缺损区段种植体的负荷因子控制
Int J Oral Maxillofac Implants. 1997 May-Jun;12(3):360-70.
10
The experimental verification of the efficacy of finite element modeling to dental implant systems.有限元建模对牙种植体系统功效的实验验证。
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种植体植入不同角度的应力分析:有限元法

Stress analysis of different angulations of implant installation: the finite element method.

作者信息

Lan Ting-Hsun, Huang Heng-Li, Wu Ju-Hui, Lee Huey-Er, Wang Chau-Hsiang

机构信息

Department of Prosthodontics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.

出版信息

Kaohsiung J Med Sci. 2008 Mar;24(3):138-43. doi: 10.1016/S1607-551X(08)70141-4.

DOI:10.1016/S1607-551X(08)70141-4
PMID:18364274
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11917706/
Abstract

Clinically, many implant cases with different angulation over the lower posterior area have been found. The purpose of this study was to analyze the bony stress with different implant tilting during normal masticatory load using the finite element method (FEM), with the hope of discovering a desirable installation of implant. A three-dimensional finite element method was employed to analyze the bony stress generated by different angulation designs (15 degrees) of implant bodies. Eight solid models of the mandibular first and second molars were built up and then transferred to a mesh model in FEM (ANSYS) to perform a stress analysis. A simulated load (400 N) was applied to the splinted crowns with vertical and horizontal forces. The loading sites were on the central fossa of the splinted crowns. For stress distribution, some designs will be better than a parallel installation. The results suggested that not all implant bodies tilting with the splinted crowns lead to stress concentration.

摘要

临床上,已发现许多在下颌后牙区具有不同角度的种植病例。本研究的目的是使用有限元方法(FEM)分析在正常咀嚼负荷下不同种植体倾斜角度时的骨应力,以期发现理想的种植体植入方式。采用三维有限元方法分析种植体不同角度设计(15度)产生的骨应力。构建了下颌第一和第二磨牙的八个实体模型,然后将其转换为有限元法(ANSYS)中的网格模型以进行应力分析。将模拟载荷(400 N)以垂直和水平力施加于联冠。加载部位位于联冠的中央窝。对于应力分布,某些设计将优于平行植入。结果表明,并非所有与联冠倾斜的种植体都会导致应力集中。