口腔医学研究 ›› 2019, Vol. 35 ›› Issue (3): 246-250.DOI: 10.13701/j.cnki.kqyxyj.2019.03.013

• 论著 • 上一篇    下一篇

短种植体修复牙槽骨严重吸收的下颌第二磨牙的三维有限元分析

陈俊良1,2, 刘旭琳2, 张潇月2, 田欣2, 何芸1,2*   

  1. 1. 西南医科大学附属口腔医院口腔颌面外科 四川 泸州 646000;
    2. 西南医科大学口颌面修复重建和再生实验室 四川 泸州 646000
  • 收稿日期:2018-11-22 出版日期:2019-03-28 发布日期:2019-04-01
  • 通讯作者: * 何芸,电话:0830-3102016
  • 作者简介:陈俊良(1981~ ),男,四川泸州人,硕士,副主任医师,主要从事牙槽外科和口腔种植的研究。
  • 基金资助:
    国家自然科学基金项目(编号:11702231) 四川省科技厅创新苗子工程项目(编号:2018097) 四川省卫生厅项目(编号:18PJ095) 四川省教育厅项目(编号:16ZB0201、17ZD660)

Three-dimensional Finite Element Analysis of Short Implant Supported Mandibular Second Molar with Dramatically Absorbed Alveolar Bone

CHEN Jun-liang1,2, LIU Xu-lin2, ZHANG Xiao-yue2, TIAN Xin2, HE Yun1,2*   

  1. 1. Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, China;
    2. Orofacial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China.
  • Received:2018-11-22 Online:2019-03-28 Published:2019-04-01

摘要: 目的:对比分析种植修复牙槽骨严重吸收的下颌第二磨牙时,不同长度种植体和牙冠直径对种植体及周围骨组织的影响。旨在为短种植体修复下颌第二磨牙的应用奠定理论基础。方法:将影像学资料导入软件,建立6个不同修复方式的模型,对牙冠施加垂直向150 N的载荷,比较分析不同模型的生物力学性能。结果:与长种植体模型相比,短种植体模型的种植体最大位移值和骨皮质最大应力值均较之更小,而骨松质最大应力值较之更大。随着牙冠减径的比例增加,种植体的最大位移值、骨皮质最大应力值、骨松质最大应变值均减小。结论:从生物力学角度来看,短种植体修复牙槽骨严重吸收的下颌第二磨牙是一种比较可靠的修复方式。对牙冠进行减径处理能降低种植体位移、骨组织应力和应变。

关键词: 短种植体, 应力, 应变, 三维有限元

Abstract: Objective: To lay a theoretic basis for the application of short implant supporting the mandibular second molar with dramatically absorbed alveolar bone. Methods: Based on the image data, six models with different ways of restoration were created. Vertical load of 150N was applied on the prosthesis. The displacement of implant and the stress and strain of bone were compared. Results: Compared with long implant models, the short implant model shown the lower displacement of implant, the lower stress of cortical bone, and the higher stress of spongious bone. The maximum displacement of implant, the stress of cortical bone, and the stress of spongious bone decreased as the crown diameter decreased. Conclusion: From a biomechanical point of view, it can be concluded that the use of short implant to support the mandibular second molar with dramatically absorbed alveolar bone is a reliable treatment option.

Key words: Short implants, Stress, Strain, Finite element analysis