天然上颌中切牙与种植体应力规律的三维有限元分析万林子;高永波;孙蕾;吴熙凤;林臻彦;徐良伟;刘朕哲;徐多玲;李阳;周延民【期刊名称】《中国组织工程研究》【年(卷),期】2015(019)016【摘要】背景:生物力学相容性是保证种植体与骨结合后长期稳定并行使功能的必要条件,因此,了解上颌中切牙与其周围骨组织应力应变分布情况对种植义齿修复尤为重要.目的:根据天然牙5种不同解剖分型,探讨上颌中切牙牙根与种植体的应力分布规律.方法:根据天然上颌中切牙 5 种不同解剖分型,通过 UGNX、ANSYS 等软件建立种植体及周围局部结构的三维有限元模型(B1、B2、M1、M2、P1),对种植体施加与牙长轴的夹角成0°、30°、45°、60°、90°的100 N静态荷载力,分析5类上颌中切牙牙根与种植体的应力分布情况.结果与结论:5 种分型中,天然中切牙与种植体等效应力随着加载力角度的增大而增大,种植体上升趋势高于天然牙.天然牙等效应力最大值集中在B1,最小值在M1,而种植体等效应力最大值在M1,最小值在M2.天然牙牙根等效应力有2%-31%的差距,种植体等效应力有4%-21%的差距,种植体的应力分布区间小于天然牙牙根的应力分布区间.说明种植体与天然牙随着咬合力角度的增大与受力呈正比,种植体所能承受的咬合力小于天然中切牙.%BACKGROUND:Biomechanical compatibility is the necessary condition to ensure the stable osseointegration with implants that then can function over a long period; therefore, it is especialy important to get knowledge about distribution of stress and strain between the maxilary central incisor and its surrounding bone tissue. OBJECTIVE: Based on five different anatomical types of natural teeth, to study the regularity of stressdistribution between the maxilary central incisor root andimplant.METHODS: According to the five different anatomical types of natural maxilary central incisors, UGNX and ANSYS were used to set up three-dimensional finite element models (B1, B2, M1, M2, P1) for the implant and surrounding structures, which were under 100 N static load at angles of 0o, 30o, 45o, 60o, 90o with the long axis of teeth. Then, the stress distribution between the five kinds of maxilary central incisor roots and implants was analyzed. RESULTS AND CONCLUSION:Among the five different anatomical types, the equivalent stress for both the natural central incisor and implant were increased with the increasing of angles, and the implant had a higher raising trend. The equivalent stress for the natural tooth concentrated upon B1 for the maximum value and M1 for the minimum value; while the equivalent stress for the implant focused on the maximum value at M1 and the minimum value at M2. There was a gap of 2%-31% between the equivalent stresses for the natural tooth roots and a gap of 4%-21% for the implants. The stress distribution range for the implant was just smaler than that for the natural tooth roots. It implies that the bit force of implant and natural tooth is in positive proportion to the bite angles, and the bite force that implant can burden is smaler than that the central incisor can.【总页数】6页(P2545-2550)【作者】万林子;高永波;孙蕾;吴熙凤;林臻彦;徐良伟;刘朕哲;徐多玲;李阳;周延民【作者单位】遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;深圳市龙岗区人民医院,广东省深圳市 518172;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;浙江工业大学,浙江省杭州市 310014;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;遵义医学院附属深圳市龙岗中心医院,广东省深圳市 518116;吉林大学口腔医院,吉林省长春市 130021【正文语种】中文【中图分类】R318【相关文献】1.种植体与天然牙联冠修复应力分布的三维有限元分析Ⅱ.水平集中载荷对种植体、天然牙骨界面应力的影响 [J], 沈文静;陈树国;董福生;郭长军;李雅娟;孙国琪2.种植体与天然牙联冠修复应力分布的三维有限元分析1.垂直集中载荷对种植体、天然牙骨界面应力的影响 [J], 沈文静;陈树国;董福生;郭长军;孟令强3.种植体与天然牙在上颌骨复合体中应力的三维有限元分析 [J], 熊亚茸;陈新;刘洪臣;王延荣;将向华4.天然上颌中切牙与种植体应力规律的三维有限元分析 [J], 万林子;孙蕾;吴熙凤;林臻彦;徐良伟;刘朕哲;徐多玲;李阳;周延民;高永波;5.天然上颌中切牙与种植体应力规律的三维有限元分析 [J], 陈菊仙;张蕊因版权原因，仅展示原文概要，查看原文内容请购买。
