中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (28): 5164-5170.doi: 10.3969/j.issn.2095-4344.2013.28.011

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

下颌骨颊舌向骨宽度的三维有限元分析

张嘉宇,崔  杰,刘  勤,何惠宇   

  1. 新疆医科大学第一附属医院,新疆维吾尔自治区乌鲁木齐市  830054
  • 出版日期:2013-07-09 发布日期:2013-07-09
  • 通讯作者: 何惠宇,教授,博士生导师,新疆医科大学第一附属医院,新疆维吾尔自治区乌鲁木齐市 830054 hehuiyu01@126.com
  • 作者简介:张嘉宇,男,1986年生,河南省社旗县人,汉族,新疆医科大学第一附属医院口腔修复科在读硕士,主要从事三维打印及计算生物力学研究。 zjyxjykdx@163.com
  • 基金资助:

    国家自然科学基金项目(81060088)——三维打印构建组织工程化牙槽骨实验研究
    新疆维吾尔自治区科技支疆项目(201291173)——三维打印构建复合信号诱导的组织工程牙

Three-dimensional finite element analysis of buccal-lingual mandibular width

Zhang Jia-yu, Cui Jie, Liu Qin, He Hui-yu   

  1. The First Affiliated Hospital of Xinjiang Medical University, Urumqi  830054, Xinjiang Uygur Autonomous Region, China
  • Online:2013-07-09 Published:2013-07-09
  • Contact: He Hui-yu, Professor, Doctoral supervisor, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China hehuiyu01@126.com
  • About author:Zhang Jia-yu, Studying for master’s degree, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China zjyxjykdx@163.com
  • Supported by:

    National Natural Science Foundation of China, No. 81060088*;
    Science and Technology Supporting Project of Xinjiang Uygur Autonomous Region, No. 201291173*

摘要:

背景:由于牙列缺损、牙列缺失、牙周病、创伤、肿瘤等因素,很多患者面临着种植区颌骨颊舌向宽度不足这一问题,目前学者们对种植体周适宜的颊舌向骨宽度尚无一致的结论。

目的:利用三维有限元法探寻下颌骨种植体-骨界面应力分布情况,以评定出适宜种植所需下颌骨颊舌向骨宽度。

方法:用三维有限元分析法,分别对Ⅰ类、Ⅲ类骨质类型所含种植体的下颌骨模型(种植体颈部区域颊舌向骨宽度1,1.5,2,2.5,3,3.5 mm)施加200 N垂直和斜向60°两种方向的集中载荷,并对种植体骨界面进行应力分析。

结果与结论:种植体两侧各有2 mm以上的骨量即可使种植体骨界面的应力达到较为理想的状态。斜向载荷状况下产生的应力远大于垂直向载荷下产生的应力。结果表明种植体周颊舌向拥有适当的骨量对种植体骨界面应力分布有显著影响,临床种植方案设计时应尽量避免或减小斜向载荷的出现。

关键词: 组织构建, 口腔组织构建, 牙种植体, 颌骨宽度, 应力分布, 三维有限元分析, Ⅰ类下颌骨, Ⅲ类下颌骨, 国家自然科学基金

Abstract:

BACKGROUND: Due to dentition defect, dentition loss, periodontal disease, trauma and tumor, many patients have to face insufficient buccal-lingual mandibular width. At present, there is no consistent conclusion in suitable peri-implant buccal-lingual mandibular width.

OBJECTIVE: To investigate the stress of implant-bone interface with three-dimensional finite element method, in order to evaluate buccal-lingual mandibular width suitable for implants.

METHODS: Classes Ⅰ and Ⅲ mandible implant models (the buccal-lingual width of implant neck region was 1, 1.5, 2, 2.5, 3 and 3.5 mm) were loaded with 200 N forces vertically and at 60° oblique. Then, the stress and strain in the implant-bone interfacial were analyzed. 

RESULTS AND CONCLUSION: Almost 2 mm or more than 2 mm of mandible bone width could result in good stress distribution in implant-bone interface. The stress distribution of oblique loading was much greater than that of vertical loading. Proper quantity of peri-implant mandibular width is good for stress distribution in implant-bone interface. In the clinical treatment, the oblique loading should be avoided or reduced.

Key words: tissue construction, oral tissue construction, dental implant, mandibular width, stress distribution, three-dimensional finite element analysis, class Ⅰ mandible bone, class Ⅲ mandible bone, National Natural Science Foundation of China

中图分类号: