华西口腔医学杂志

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双皮层骨种植影响牙种植体稳定性的有限元固有频率研究

汪昆1;李德华2;周继祥1;张从纪1;刘宝林2;李玉龙3   

  1. 1.第三军医大学西南医院 口腔科,重庆 400038;2.第四军医大学秦都口腔医院 种植科,陕西 西安 710032; 3.西北工业大学 飞机工程系,陕西 西安 710072
  • 收稿日期:2006-02-25 修回日期:2006-02-25 出版日期:2006-02-20 发布日期:2006-02-20
  • 通讯作者: 汪 昆,Tel:023-66775342
  • 作者简介:汪 昆(1976-),男,陕西人,硕士,现在第三军医大学西南医院口腔科工作

nfluence of Bicortical Anchorage on the Natural Frequencies of Dental Implant

WANG Kun1, LI De-hua2, ZHOU Ji-xiang1, ZHANG Cong-ji1, LIU Bao-lin2, LI Yu-long3   

  1. 1. Dept. of Dentistry, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China; 2. Dept. of Oral Implantology, Qindu Stomatological Hospital, The Fourth Military Medical University, Xi'an 710032, China; 3. Dept. of Aircraft Engineering, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2006-02-25 Revised:2006-02-25 Online:2006-02-20 Published:2006-02-20

摘要:

目的  用有限元方法研究双皮层骨种植对牙种植体初期稳定性的影响。方法  建立牙种植体和局部下颌骨块三维有限元模型,利用ABAQUS有限元软件,分析双皮层骨种植对种植体颊舌向和轴向一阶振动固有频率的影响。结果  双皮层骨种植可明显提高种植体颊舌向和轴向振动的固有频率值,且随着种植体穿颊侧皮质骨厚度的增加,固有频率值逐渐增加。结论  双皮层骨种植可明显增加种植体颊舌向和轴向的初期稳定性。

关键词: 牙种植体, 三维有限元, 共振频率分析

Abstract:

Objective  To investigate the influences of bicortical anchorage on values of natural frequencies of dental implants utilizing the 3-dimensional finite element analysis. Methods  Using the commercial code of Solidworks, 3-D models of a screw-shaped dental implant and a mandibular bone segment were generated. After the 3-D implant-bone complex was meshed by ABAQUS software, effects of bicortical anchorage on the buccolingual and axial first-order natural frequencies of the implant were computed. Results  Bicortical anchorage increased both the buccolingual and axial natural frequencies remarkably. As the bicortical anchorage got deeper, the frequencies correspondingly got higher. Conclusion  Bicortical anchorage can increase the buccolingual and axial primary stability of dental implants.

Key words: dentalimplant, three-dimensionalfiniteelement, resonancefrequencyanalysis