上颌中切牙种植联冠应用角度基台在不同种植体间距的应力分析  

Stress analysis of angled abutments of maxillary central incisor implant crown in different implant spacing

作　　者：马吾兰江·阿不都仁木 孜拉来·居来提 白布加甫·叶力思 古丽再努·依不拉音 尼加提·吐尔逊[1] Mawulanjiang·Abudurenmu;Zilalai·Julaiti;Baibujiafu·Yelisi;Gulizainu·Yibulayin;Nijiati·Tuerxun(Department of Stomatology,Second Affiliated Hospital of Xinjiang Medical University,Urumqi 830063,Xinjiang Uygur Autonomous Region,China)

机构地区：[1]新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市830063

出　　处：《中国组织工程研究》2025年第16期3351-3359,共9页Chinese Journal of Tissue Engineering Research

基　　金：新疆维吾尔自治区自然科学基金(2016D01C192),课题名称:维药买朱尼对种植体周围炎龈沟液中IL-1β以及骨界面改建影响的实验研究,项目负责人:尼加提·吐尔逊。

摘　　要：背景:在口腔多颗牙种植修复治疗中,不同的植入间距和基台角度影响着植体内部组件及骨组织处应力的分布,修复体与骨组织的应力分布是否平衡直接决定着种植体的使用寿命以及周围骨组织的稳定性。目的:分析上颌中切牙联冠修复体在3种植入间距时应用不同角度基台修复对修复体各部件及周围骨组织应力分布的影响。方法:在CT数据库中提取1例需行上颌中切牙种植修复患者的CT影像数据,导入Mimics 21.0软件提取上颌骨模型,在Geomagic软件处理后导入SolidWorks 21.0软件,绘制并构建上颌中切牙种植联冠修复体模型,在ANSYS Workbench 21.0软件中分别对3.0,2.5,2.0 mm植入间距的种植体模型应用0°,10°,20°,30°角度基台后进行加载,分析种植体及周围骨组织的应力分布情况。结果与结论:①在3.0,2.5,2.0 mm间距植入模型中,各部件的应力峰值随着植入基台角度的增大而增大,每种间距植入模型中30°基台修复时种植体及各部件所受应力峰值最高,最大等效应力峰值均出现在固位螺丝与角度基台连接处;在应用30°基台修复时,种植体周围骨组织所受应力最大;②所有模型的应力主要集中于皮质骨唇舌侧;③种植体间骨的应力分布和应力值随着种植体间距离的减小而增加,0°及10°基台修复模型都显示出比20°和30°基台模型显著更低的应力值;④结果显示,基台角度以及植入间距对种植体周围骨组织应力的分布有一定影响,当基台角度增加时,种植体受到轴向和斜向载荷,种植体周围的应力模式上升,30°基台种植修复体对骨组织应力较大,达到了皮质骨的骨吸收阈值,10°和20°基台修复应力较小于30°基台,临床上选择基台时应慎重考虑大于20°基台修复。BACKGROUND:In the multi-tooth dental implant restoration,different implant spacing and abutment angle affect the distribution of stress within the implant components and surrounding bone tissue.The balance of stress distribution between the restoration and bone tissue directly determines the performance and stability of the dental implants.OBJECTIVE:To analyze the influence of different implant spacing configurations and abutment angulations on stress distribution within the implant components and surrounding bone tissue.METHODS:The CT image data of a patient requiring upper anterior implant restoration were extracted from the CT database.The maxillary bone model was created using Mimics 21.0 software,processed in Geomagic,and imported into SolidWorks 21.0 software for constructing the maxillary central incisor implant crown restoration model.ANSYS Workbench 21.0 software was employed to apply different abutment angulations(0°,10°,20°,and 30°)to the models with implant spacing of 3.0,2.5,and 2.0 mm,followed by stress analysis of the implant and surrounding bone tissue.RESULTS AND CONCLUSION:(1)In the groups with 3.0,2.5,and 2.0 mm implant spacing,the peak stress values of the implant components increased with increasing abutment angulation.Among all groups,the highest peak stress values for both the implant and its components were observed in the models with 30°abutment angulation,specifically at the connection between the fixation screw and the angled abutment.When utilizing a 30°abutment angulation,the surrounding bone tissue experienced the highest stress levels.(2)Stress concentration was predominantly found on the buccal and lingual sides of the cortical bone in all models.(3)The stress distribution and values within the bone between implants increased as the implant spacing decreased,with the 0°and 10°abutment angulation models consistently exhibiting significantly lower stress levels compared to the 20°and 30°models.(4)The results showed that the abutment angulation and implant spacing had certai

关 键 词：种植修复体 角度基台 有限元分析 生物力学 应力分析 基台 种植体间距 

分 类 号：R459.9[医药卫生—治疗学] R318.08[医药卫生—临床医学] R783.4