山东科学 ›› 2018, Vol. 31 ›› Issue (5): 31-37.doi: 10.3976/j.issn.1002-4026.2018.05.006

• 新材料 • 上一篇    下一篇

双层全瓷义齿修复体力学性能模拟与分析研究

付坤1,王高琦1*,王守仁1*,温道胜1,王勇2,刘文涛1   

  1. 1. 济南大学机械工程学院,山东 济南 250022;2. 济南大学物理学院, 山东 济南 250022
  • 收稿日期:2018-04-25 出版日期:2018-10-20 发布日期:2018-10-20
  • 通信作者: 王高琦,E-mail: me_wanggq@ujn.edu.cn;王守仁,E-mail: sherman0158@163.com E-mail:me_wanggq@ujn.edu.cn;sherman0158@163.com
  • 作者简介:付坤(1994—),男,硕士,研究方向为摩擦学应用。
  • 基金资助:

    国家自然科学基金(51872122);山东省高等学校科技计划 (J18KZ002);济南大学科技计划(学科交叉专项)(XKY1736);山东省泰山学者工程专项经费 (2016-2020)

Simulation and analysis of mechanical properties of bilayered all-ceramic denture

FU Kun1, WANG Gao-qi1*, WANG Shou-ren1*, WEN Dao-Sheng1, WANG Yong2, LIU Wen-tao1   

  1. 1.School of Mechanical Engineering, University of Jinan, Jinan 250022, China;
    2.School of Physics and Technology, University of Jinan, Jinan 250022, China
  • Received:2018-04-25 Online:2018-10-20 Published:2018-10-20

摘要:

为探究材料性能对双层义齿强度的影响,建立了包括饰瓷、底瓷、牙本质的全瓷义齿简化模型,并利用有限元法计算了最大主应力与等效应力。结果表明,饰瓷为义齿的薄弱结构,应用Vita VM9时,饰瓷在3个咬合阶段最大等效应力分别为61.2、80.2、84.5 MPa,使用效果最好。应用Cercon Zirconia时,底瓷受力效果最好,最大等效应力在三个阶段分别为133.5、190.3、209.73 MPa。最大等效应力出现位置为瓷冠的牙沟、牙窝、底部以及底瓷的底缘。

关键词: 全瓷冠, 应力分析, 饰瓷, 磨牙, 底瓷

Abstract:

To investigate the effects of material properties on the strength of bilayered denture, the simplified model consisting of veneer, core and dentin was built, and maximum principal stress and equivalent stress were calculated by finite element analysis. Results showed veneer was the weak link of denture, and when Vita VM9 and Cercon Zirconia were used as veneer and core respectively, the bilayered denture showed high performance in mechanical property. In the three phases of occlusion, the maximum equivalent stress of veneer was 61.2, 80.2 and 84.5 MPa, the maximum equivalent stress of core was 133.5, 190.3 and 209.73 MPa. The maximum equivalent stress occurred at dental groove, tooth crypt, bottom of crown and bottom of core, respectively.

Key words: all-ceramic crowns, molars, core, veneer, stress analysis

中图分类号: 

  • TH122