动态载荷下双种植体单冠修复下颌磨牙的三维有限元分析

›› 2019, Vol. 39 ›› Issue (12): 1078-1081.

动态载荷下双种植体单冠修复下颌磨牙的三维有限元分析

邹英楠,史久慧

哈尔滨医科大学附属第一医院

收稿日期:2018-11-02 修回日期:2018-11-23 出版日期:2019-12-28 发布日期:2019-12-31
通讯作者: 史久慧 E-mail:zidane04555@sina.com

Three-dimensional finite element analysis of double-implant-supported mandibular molar restoration under dynamic loads

Zou Ying-Nan¹,Shi Jiu-Hui

Received:2018-11-02 Revised:2018-11-23 Online:2019-12-28 Published:2019-12-31
Contact: Shi Jiu-Hui E-mail:zidane04555@sina.com

摘要/Abstract

摘要： 目的探讨动态载荷作用条件下，双种植体单冠修复下颌磨牙的最佳聚合角度。方法分别建立聚合角度为0°、5°、10°、15°双种植体单冠修复下颌磨牙的三维有限元模型，对修复体施加一个周期为0.875 s的动态载荷，分析种植体周围骨组织的应力分布和种植体-基台复合体位移值情况。结果 ①种植体周围皮质骨最大Von-Mises应力值：5°聚合角度模型＞10°聚合角度模型＞15°聚合角度模型＞0°聚合角度模型；种植体周围松质骨最大Von-Mises应力值：15°聚合角度模型＞10°聚合角度模型＞5°聚合角度模型＞0°聚合角度模型；②种植体-基台复合体最大位移峰值：15°聚合角度模型＞5°聚合角度模型＞10°聚合角度模型＞0°聚合角度模型。结论动态载荷下，双种植体单冠修复下颌磨牙的最佳聚合角度为0°。

关键词: 有限元分析, 动态载荷, 双种植体, 下颌磨牙

Abstract: Objective To discuss the most suitable polymerization angle of double-implant-supported mandibular molar restoration under dynamic loads. Methods Three-dimensional finite element models of mandibular molars with double angles of 0°, 5°, 10° and 15° were established, and a dynamic load of 0.875 s was applied to the restoration. The stress distributions of the bone tissue and the displacement values of the implant-abutment complex were analyzed. Results ①The maximum Von-Mises of cortical bone around the implant: 5° polymerization angle model> 10° polymerization angle model>15° polymerization angle model>0° polymerization angle model. The maximum Von-Mises of cancellous bone around the implant: 15° polymerization angle model> 10° polymerization angle model>5° polymerization angle model>0° polymerization angle model. ②The maximum displacement of the implant-abutment complex: 15° polymerization angle model>5° polymerization angle model>10° polymerization angle model>0°polymerization angle model. Conclusion The most suitable polymerization angle of double-implant-supported mandibular molar restoration is 0° under dynamic loads.

Key words: finite element analysis, dynamic loads, double implant, mandibular molar

中图分类号:

R783.4

邹英楠史久慧. 动态载荷下双种植体单冠修复下颌磨牙的三维有限元分析[J]. , 2019, 39(12): 1078-1081.

Zou Ying-Nan Shi Jiu-Hui. Three-dimensional finite element analysis of double-implant-supported mandibular molar restoration under dynamic loads[J]. , 2019, 39(12): 1078-1081.

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