中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (20): 3679-3686.doi: 10.3969/j.issn.2095-4344.2013.20.010

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

高度吸收的上颌窦区种植体生物力学分析

何  毅1,姜培林1,耿建平1,王  英2,周剑秋2,徐  卫3   

  1. 1南京工业大学自动化与电气工程学院,江苏省南京市  210009
    2 机械与动力工程学院,江苏省南京市  210009
    3 英国萨理大学工学院,吉尔福德郡  GU2 7XH
  • 收稿日期:2012-08-31 修回日期:2012-12-19 出版日期:2013-05-14 发布日期:2013-05-14
  • 通讯作者: 耿建平,教授,南京工业大学自动化与电气工程学院,江苏省南京市 210009 jpgeng2005@163.com
  • 作者简介:何毅☆,男,江苏省南京市人,汉族,2006年南京林业大学毕业,博士,主要从事电气工程的有限元分析方面的研究。 heyi163@163.com
  • 基金资助:

    国家自然科学基金资助(31070857);南京工业大学“三创”计划资助。

Biomechanical analysis of the implants in highly absorbed maxillary sinus district 

He Yi1, Jiang Pei-lin1, Geng Jian-ping1, Wang Ying2, Zhou Jian-qiu2, Xu Wei3   

  1. 1 College of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu Province, China
    2 College of Mechanical Engineering, Nanjing University of Technology, Nanjing  210009, Jiangsu Province, China
    3 The University of Surrey, Guildford, Surrey GU2 7XH, UK 
  • Received:2012-08-31 Revised:2012-12-19 Online:2013-05-14 Published:2013-05-14
  • Contact: Geng Jian-ping, Professor, College of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu Province, China jpgeng2005@163.com
  • About author:He Yi☆, Doctor, College of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu Province, China heyi163@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 31070857; a grant from “Triple Innovation” Plan of Nanjing University of Technology

摘要:

背景:目前有限元法广泛应用于骨科生物力学分析,评价指标主要包括Max von Mises 应力和应力的传递和分布概况。但由于体内的复杂生物力学环境和个体化差异明显,很难由具体的案例得出解决临床相关的方法。
目的:分析高度吸收上颌窦区种植体的生物力学分布状况。
方法:应用Simplant建立了一个位于上颌第二磨牙位置的5.5 mm×11.0 mm植入体模型;Abaqus有限元软件分别分析了在正咬合和反咬合关系条件下,在0°,30°,45°,60°,90°负载300 N的同等加载下,其上颌窦区域的应力分布情况,并作了比较。
结果与结论:在反咬合关系下,上颌骨内的应力集中均匀分布在牙植体颈部与皮质骨的交界处,在0°,30°,45°,60°,90°负载300 N的同等加载下,Max von Mises分别是23.43,52.97,61.18,66.15,70.53 MPa。在正咬合关系下,上颌骨内的应力集中不仅分布在牙植体颈部与皮质骨的交界处,而且出现了第二应力集中区,Max von Mises分别是38.64,71.22,71.62,77.65,73.21 MPa,较反咬合平均高出50%左右。实验有限元分析结果表明,高度吸收上颌窦区采用反咬合设计方法更好。

关键词: 组织构建, 口腔组织构建, 生物力学, 上颌窦区, 种植体, 第二磨牙, Simplant设计, Abaqus有限元, 有限元模型, 咬合关系, 皮质骨, 国家自然科学基金

Abstract:

BACKGROUND: The finite element method has been widely used in orthopedic biomechanics analysis by evaluating Max von Mises stress and stress delivery and distribution. However, due to the complex biomechanics environment in the body and significant individual differences, it is difficult to obtain clinical methods based on specific cases.
OBJECTIVE: To analyze the biomechanical distribution of implants in the maxillary sinus district.
METHODS: An implant model, 5.5 mm×11.0 mm, located in the second molar of the maxillary was built using Simplant. The distribution of the stress of maxillary sinus district in the conditions of normal occlusion and crossbite under loading of 300 N at 0°, 30°, 45°, 60°, and 90°, respectively, was analyzed using Abaqus finite element software.
RESULTS AND CONCLUSION: In crossbite condition, the concentration stress of von Mises was evenly distributed in the junction of the neck of dental implant and cortical bone; under the 300 N equivalent loading at 0°, 30°, 45°, 60°, and 90°, Max von Mises stress was 23.43, 52.97, 61.18, 66.15, and 70.53 MPa. In normal occlusion condition, the second stress concentration zone appeared in cortex in addition to the junction of the neck of dental implant and cortical bone, and Max von Mises stress was 30.91, 71.22, 71.62, 77.65, and 73.21 MPa under the 300N equivalent loading at 0°, 30°, 45°, 60° and 90°, about 50% higher compared with crossbite. Finite element analysis demonstrates that it is better to adopt crossbite in highly absorbed maxillary sinus district.

Key words: tissue construction, oral tissue construction, biomechanics, maxillary sinus, implant, second molar, Simplant design, Abaqus finite element, finite element model, occlusion, cortical bone, National Natural Science Foundation of China

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