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论文摘要

下颌平面角影响种植体应力分布的有限元分析

Finite elemental analysis of the influence of mandibular plane angle on the stress distribution of implant tooth

作者:邢维斌 郑淑贤 杨适宜

Author:Xing Weibin, Zheng Shuxian, Yang Shiyi.

收稿日期:2016-03-05          年卷(期)页码:2016,34(5):502-502-505

期刊名称:华西口腔医学杂志

Journal Name:West China Journal of Stomatology

关键字:下颌平面角,种植体,应力分布,有限元分析,

Key words:mandibular plane angle,dental implant,stress distribution,finite elemental analysis,

基金项目:

天津市公安局科技资金(2012KYSGAY022)

中文摘要

目的 通过在不同下颌平面角角度下对下颌第一磨牙种植体的力学特性进行有限元分析,得出下颌平面角角度对种植体受力的影响规律,为临床种植提供理论参考。方法 采集3种不同下颌平面角(低角、均角、高角)CT数据,建立种植复合体有限元模型,设计正交实验方案,记录数据,分析处理,得出有限元分析结果。结果 最优参数组合为:低角,4.8 mm,Ⅱ型骨。各个因素的主次关系依次为种植体直径、下颌平面角角度、骨密度。结论 下颌平面角角度对种植体的稳固有一定的影响,在同样咬合力的情况下,高角种植体所受应力最大,其次是均角,低角最小。

英文摘要

Objective Finite elemental analysis of the mechanical characteristics of a first mandibular implant molar under different mandibular plane angles determines the load conditions on the implant, thereby providing guidance for clinical application.Methods CT data of three mandibular plane angles (low, average, high) were collected. A finite elemental combination model of a dental implant was constructed. The orthogonal experimental research was designed. Results followed data collection and analysis.Results The optimal combination was a low angle, 4.8 mm, and type Ⅱbone. The relations among diameter of the implant, angle of mandibular bone, and bone density were determined.Conclusion Mandibular plane angle influences the stability of a dental implant. Under constant biting force, dental implants bear the stress proportional to the angle, high angles cause high stress, average angles cause average stress, and low angles cause the least stress.

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