口腔医学研究

口腔医学研究 ›› 2019, Vol. 35 ›› Issue (1): 71-74.DOI: 10.13701/j.cnki.kqyxyj.2019.01.017

• 口腔种植修复学研究 • 上一篇    下一篇

牙槽骨水平吸收条件下上前牙全瓷联冠三维有限元模型的建立

张彬1, 安虹1*, 郭超2, 杨贝贝1, 王家亮3   

  1. 1. 西安交通大学口腔医院特诊科 陕西 西安 710004;
    2. 高新医院口腔科 陕西 西安 710075;
    3. 西安市第三医院口腔科 陕西 西安 710016
  • 收稿日期:2018-04-07 出版日期:2019-01-18 发布日期:2019-01-28
  • 通讯作者: 安虹,E-mail:anhong@mail.xjtu.edu.cn
  • 作者简介:张彬(1989~ ),男,山西晋中人,硕士,住院医师,从事三维有限元对全瓷冠的应力的分析。
  • 基金资助:
    陕西省卫生计生委卫生科研项目D类(编号:2016A004)

Establishment of Three-dimensional Finite Element Model of Splinted All-ceramic Crowns for Maxillary Anterior Teeth with Horizontal Alveolar Bone Absorption

ZHANG Bin1, AN Hong1*, GUO Chao2, YANG Bei-bei1, WANG Jia-liang3   

  1. 1. Department of VIP, Stomatological Hospital of Xi’an Jiao Tong University, Xi’an 710004, China;
    2. Department of Stomatology, Xi’an Hi-tech Hospital, Xi’an 710075, China;
    3. Department of Stomatology, Xi’an Third Hospital, Xi’an 710076, China
  • Received:2018-04-07 Online:2019-01-18 Published:2019-01-28

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摘要： 目的:建立牙槽骨水平吸收条件下上颌前牙全瓷联冠修复的三维有限元模型,为上前牙联冠修复后不同组织的应力分析提供基础。方法:以健康成年人为实验对象,利用CBCT扫描获取实验数据,Mimics、Geomagic studio、SolidWorks及ANSYS等计算机辅助软件,通过对牙槽骨及牙周膜组件的均匀降低模拟牙槽骨水平吸收,建立三维有限元模型。结果:建立牙槽骨水平吸收条件下上颌前牙全瓷联冠的三维有限元模型,包括7个组件:修复体、预备体、皮质骨、松质骨、黏膜、牙周膜、牙髓。结论:所建立模型形态逼真,各组件结构特性及力学参数清楚,载荷力作用下可均匀传递到各个部分,有效模拟了牙槽骨水平吸收条件下上颌前牙全瓷联冠修复后的应力状态,可以为应力分析提供基础。

关键词: 牙槽骨水平吸收, 全瓷联冠, 三维有限元

Abstract: Objective: To analyze the stress distribution of splinted all-ceramic crowns for maxillary anterior teeth with horizontal alveolar bone absorption through three-dimensional finite element model. Methods: Healthy adults were taken as the experimental subjects and CBCT was obtained. Computer-aided software like Geomagic studio, Mimics, SolidWorks, and ANSYS were used to model the three-dimensional finite element by uniform reduction of the alveolar bone and periodontal ligament components. Results: Three-dimensional finite element model of all-ceramic crowns of maxillary anterior teeth with horizontal alveolar bone absorption was established. It included 7 components: all-ceramic splinted crowns, prepared teeth, cortical bone, cancellous bone, mucous membranes, pericementum, and pulp. Conclusion: The model is realistic, and the structural characteristics and mechanical parameters of each component are clear. The loading force can be uniformly transmitted to various parts. It can be used in stress distribution analysis.

Key words: Alveolar horizontal absorption, All-ceramic splinted crown, Three-dimensional finite element