摘要
背景:口腔治疗中牙弓形态常被认为是一个重要的因素,但其三维有限元模型暂未被建立。目的:建立模拟正畸治疗后方圆型、卵圆型、尖圆型牙弓形态的三维有限元模型。方法:选取1例牙列完整的正畸治疗后成年女性患者的颌面部CT断层影像,利用Mimics 20.0软件、Geomagic Studio(2014)软件、UnigraphicsNX(10.0)软件、ANSYS(18.2)有限元分析软件,生成一个完整的上颌牙弓模型。再通过运算得到的不同牙弓形态的方程式,导入已建立的牙弓模型后,构建方圆型、卵圆型、尖圆型牙弓的三维有限元模型。结果与结论:①得到描绘弓形的四阶多项式函数,并成功建立方圆型、卵圆型、尖圆型牙弓的三维有限元模型;②方圆型牙弓包含节点总数398098个,单元总数223751个;卵圆型牙弓包含节点总数401800个,单元总数226177个;尖圆型牙弓包含节点总数404434个,单元总数227430个,可为后续的力学分析和临床实践提供可靠的基础。
BACKGROUND:Dental arch shape is often considered as an important factor in oral treatment;however,there is no report on the construction of threedimensional finite element models of different dental arches.OBJECTIVE:To establish the three-dimensional finite element models of maxillary dental arches including square,ovoid,tapered.METHODS:An adult female patient after orthodontic treatment was selected as the subject of this study and her CT data were analyzed used Mimics 20.0 software,Geomagic Studio(2014)software,UnigraphicsNX(10.0)software and ANSYS(18.2)finite element analysis software to generate a complete model of maxillary dental arch.Then,through the calculation of the equations of different dental arch shapes and guide the equations into established dental arch model,three-dimensional finite element models of square,ovoid and tapered dental arches were constructed.RESULTS AND CONCLUSION:A fourth-order polynomial function describing the dental arch shape was obtained and three-dimensional finite element models of square,ovoid and tapered maxillary dental arch were successfully constructed.Square arch had 398098 nodes and 223751 units,ovoid arch had 401800 nodes and 226177 units,and tapered arch had 404434 nodes and 227430 units.These will provide a reliable basis for subsequent biomechanical analysis and clinical practice.
作者
李圆圆
鲁颖娟
叶玉珊
Mustafa M.M Weldali
常少海
Li Yuanyuan;Lu Yingjuan;Ye Yushan;Mustafa M.M Weldali;Chang Shaohai(Department of Stomatology,Sun Yat-sen Memorial Hospital,Sun Yat-sen University,Guangzhou 510120,Guangdong Province,China)
出处
《中国组织工程研究》
CAS
北大核心
2021年第20期3125-3129,共5页
Chinese Journal of Tissue Engineering Research
基金
广东省科技计划项目(A002014004),项目负责人:常少海。
关键词
牙弓形态
上颌
正畸
三维
有限元
生物力学
dental arch form
maxillary
orthodontics
three-dimensional
finite element
biomechanics
作者简介
第一作者:李圆圆,女,1994年生,湖南省衡阳市人,汉族,2020年中山大学毕业,硕士,医师,现工作于广州市海珠区口腔医院,主要从事口腔正畸学方面的研究,https://orcid.org/0000-0003-1310-4880;通讯作者:常少海,副教授,副主任医师,中山大学孙逸仙纪念医院口腔科,广东省广州市510120。
