华西口腔医学杂志

• 口腔种植学专栏 • 上一篇    下一篇

下颌平面角影响种植体应力分布的有限元分析

邢维斌1 郑淑贤2 杨适宜1   

  1. 1.天津市公安医院口腔科;2.天津大学机械工程学院,天津300042
  • 收稿日期:2016-03-05 修回日期:2016-07-10 出版日期:2016-10-01 发布日期:2016-10-01
  • 通讯作者: 杨适宜,主治医师,学士,E-mail:yangshiyi1982@126. com
  • 作者简介:邢维斌,副主任医师,学士,E-mail:xingweibin1967@163.com
  • 基金资助:

    天津市公安局科技资金(2012KYSGAY022)

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

 Xing Weibin1, Zheng Shuxian2, Yang Shiyi1.   

  1. 1. Dept. of Stomatology, Tianjin Public Security Hospital, Tianjin 300042, China; 2. School of Mechanical Engineering, Tianjin University, Tianjin 300042, China
  • Received:2016-03-05 Revised:2016-07-10 Online:2016-10-01 Published:2016-10-01
  • Contact: Yang Shiyi, E-mail: yangshiyi1982@126.com.
  • Supported by:

    Tianjin Municipal Public Security Bureau of Science and Technology Funding for Projects (2012KYSGAY022).

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。

关键词: 下颌平面角, 种植体, 应力分布, 有限元分析

Abstract:

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 Ⅱ bone. 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.

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