动态载荷下不同材料修复非龋性颈部缺损有限元分析

doi:10.13701/j.cnki.kqyxyj.2021.09.011

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (9): 820-824.DOI: 10.13701/j.cnki.kqyxyj.2021.09.011

动态载荷下不同材料修复非龋性颈部缺损有限元分析

殷金萍, 王静^*, 孙亚丽, 林华洁

郑州大学第一附属医院口腔学中心河南郑州 450000

收稿日期:2021-02-05 出版日期:2021-09-28 发布日期:2021-09-16
通讯作者: *王静,E-mail:181310247@qq.com
作者简介:殷金萍(1995~ ),女,江西九江人,硕士在读,研究方向:牙体牙髓病学。
基金资助:
河南省医学科技攻关计划(联合共建)项目(编号:LHGJ20190201)

Estimation of Biomechanical Behavior in Non-carious Cervical Lesions Restored by Different Materials:A 3D Finite Element Analysis

YIN Jingping, WANG Jing^*, SUN Yali, LIN Huajie

Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China

Received:2021-02-05 Online:2021-09-28 Published:2021-09-16

摘要/Abstract

摘要： 目的: 通过三维有限元模拟口腔咀嚼环境,采用不同材料修复非龋性颈部缺损后进行动态加载,研究各咀嚼阶段下颌前磨牙生物力学性能,为临床选择合适的修复材料提供参考。方法: 以右下颌第二前磨牙颈部缺损模型为对照组(Control),IPS e.max(A)、Celtra Duo(B)、Filtek Z350树脂块(C)、Lava Ultimate(D)和Filtek Supreme XT(E)修复缺损为实验组;模拟一个咀嚼周期T=0.875 s内各模型的应力应变趋势,并进行力学分析。结果: 同一时期,各模型剩余牙体组织及修复材料应力变化均表现相同趋势:Control＞A＞B＞C＞D＞E;同一模型,不同咀嚼阶段各模型组应力值为Ⅳ＞Ⅲ＞Ⅱ。结论: 与牙体弹性模量相近的材料可获得与牙体相似的应力分布,冲击载荷影响应力分布。

关键词: 下颌第二前磨牙, 直间接修复, 动态加载, 有限元分析

Abstract: Objective: To study the biomechanical properties of different materials to repair non carious cervical defects of right mandibular second premolar with different loadings. Methods: The neck defect model at right mandibular second premolar was used. The non treatment was set as Control group, and IPS e.max (D), Celtra Duo (B), Filtek Z350 resin block (C), Lava Ultimate (D), and Filtek Supreme XT (E) filling were set as experimental group. An instantaneous dynamic loading was performed to investigate the stress distribution within a specific period (T=0.875 s). Results: During the same period,the stress values within remaining teeth and materials were the same, i.e. Control>A>B>C>D>E. For each group, the stress values within different periods were Ⅳ>Ⅲ>Ⅱ. Conclusion: The materials with similar elastic modulus to that of teeth showed better stress distribution,and the impact load affects the stress distribution.

Key words: the right mandibular second premolar, direct and indirect restoration, dynamic loading, finite element analysis

殷金萍, 王静, 孙亚丽, 林华洁. 动态载荷下不同材料修复非龋性颈部缺损有限元分析[J]. 口腔医学研究, 2021, 37(9): 820-824.

YIN Jingping, WANG Jing, SUN Yali, LIN Huajie. Estimation of Biomechanical Behavior in Non-carious Cervical Lesions Restored by Different Materials:A 3D Finite Element Analysis[J]. Journal of Oral Science Research, 2021, 37(9): 820-824.

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动态载荷下不同材料修复非龋性颈部缺损有限元分析

Estimation of Biomechanical Behavior in Non-carious Cervical Lesions Restored by Different Materials:A 3D Finite Element Analysis

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