口腔种植体-基台微间隙充填对种植修复系统及周围骨力学的影响

doi:10.19438/j.cjoms.2022.02.003

中国口腔颌面外科杂志 ›› 2022, Vol. 20 ›› Issue (2): 117-122.doi: 10.19438/j.cjoms.2022.02.003

口腔种植体-基台微间隙充填对种植修复系统及周围骨力学的影响

马捷¹, 王齐帅², 张兵华¹, 陈天天¹, 蔡国平², 宋涛¹

1.上海市徐汇区牙病防治所,上海 200032;
2.上海交通大学海洋工程国家重点实验室,工程力学系,上海 200240

收稿日期:2021-12-03 修回日期:2022-01-12 出版日期:2022-03-20 发布日期:2022-03-20
通讯作者: 宋涛,E-mail：13701635237@139.com
作者简介:马捷（1987-）,女,博士,医师,E-mail：majie_morrina@163.com
基金资助:
徐汇区医学科研项目（SHXH201810）

The effect of oral implant-abutment microgaps closed by sealing materials on implant-supported prosthesis, surrounding bone

MA Jie¹, WANG Qi-shuai², ZHANG Bing-hua¹, CHEN Tian-tian¹, CAI Guo-ping², SONG Tao¹

1. Shanghai Xuhui District Dental Center. Shanghai 200032;
2. Department of Engineering Mechanics, State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University. Shanghai 200240, China

Received:2021-12-03 Revised:2022-01-12 Online:2022-03-20 Published:2022-03-20

摘要/Abstract

摘要： 目的:探讨口腔种植体-基台微间隙充填对种植修复系统及周围骨力学的影响。方法:建立第一磨牙缺失的下颌骨有限元模型,模拟植入1颗Straumann种植体。建立对不同大小种植体-基台微间隙（5、6、7、8、9 μm)胶质充填后的种植系统模型,于面垂直向加载100 N咬合力和斜向45°加载100 N咬合力,分析种植体系统各部件及下颌骨的等效应力。结果:不论种植体-基台微间隙充填与否,修复体整体和基台的受力基本相同。当该微间隙被充填时,种植体上的等效应力略微减小,下颌骨与种植体接触部分的等效应力有较明显减小。当该间隙变大时,模型的受力整体变大。结论:种植体-基台微间隙充填可有效减小种植体及下颌骨的受力,添加封闭材料可能有一定实用价值。

关键词: 牙种植体, 牙基台, 微间隙, 有限元分析, 等效应力

Abstract: PURPOSE: To investigate the stress and stress distribution generated on each component of dental implant system and surrounding bone when using sealing materials to close the implant-abutment microgaps. METHODS: A finite element model of partial mandible without first molar was set up, and a dental implant (Straumann) was placed. The implant system models were established with different sizes of implant-abutment microgaps (5, 6, 7, 8, 9 μm), which were closed by sealing materials. The loading forces were 100 N axially (0°) and 100 N obliquely (45°) respectively on occlusive surface. Finite element analysis was performed by computer. RESULTS: The stress on the whole prosthesis and the abutment was almost unchanged whether the implant-abutment microgap was filled or not. When the microgap was closed, the equivalent stress on the implant decreased slightly, and the equivalent stress on the surrounding bone decreased significantly. The stress on the whole prosthesis increased with the increase of the microgaps. CONCLUSIONS: Using sealing materials to close the implant-abutment microgaps could effectively reduce the stress on the implant and mandible, which may have some practical value.

Key words: Dental implant, Dental abutment, Microgap, Finite element analysis, Equivalent stress

中图分类号:

R782.1

马捷, 王齐帅, 张兵华, 陈天天, 蔡国平, 宋涛. 口腔种植体-基台微间隙充填对种植修复系统及周围骨力学的影响[J]. 中国口腔颌面外科杂志, 2022, 20(2): 117-122.

MA Jie, WANG Qi-shuai, ZHANG Bing-hua, CHEN Tian-tian, CAI Guo-ping, SONG Tao. The effect of oral implant-abutment microgaps closed by sealing materials on implant-supported prosthesis, surrounding bone[J]. China J Oral Maxillofac Surg, 2022, 20(2): 117-122.

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口腔种植体-基台微间隙充填对种植修复系统及周围骨力学的影响

The effect of oral implant-abutment microgaps closed by sealing materials on implant-supported prosthesis, surrounding bone

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