连续波充填技术对牙周组织温度影响的三维有限元分析

doi:10.7518/hxkq.2021.04.011

华西口腔医学杂志 ›› 2021, Vol. 39 ›› Issue (4): 447-452.doi: 10.7518/hxkq.2021.04.011

连续波充填技术对牙周组织温度影响的三维有限元分析

张建国¹(), 刘隽¹, 岑蓉², 胡凤玲³()

^1.上海应用技术大学机械工程学院，上海 201418
^2.香港大学牙医学院，香港 999077
^3.复旦大学附属上海市第五人民医院口腔科，上海 200240

收稿日期:2020-09-02 修回日期:2021-05-06 出版日期:2021-08-01 发布日期:2021-08-10
通讯作者: 胡凤玲 E-mail:sl719896175@163.com;hfl415263@163.com
作者简介:张建国，副教授，博士，E-mail：sl719896175@163.com
基金资助:
上海市自然科学基金(19ZR1455100);闵行区自然科学研究课题(2019MHZ039);上海市闵行区卫生与计划委员会科研项目(2015MW05)

Finite element analysis of the effects of periodontal tissue temperature by continuous wave technique

Zhang Jianguo¹(), Liu Jun¹, Cen Rong², Hu Fengling³()

^1.School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, China
^2.Faculty of Dentistry, University of Hong Kong, Hong Kong 999077, China
^3.Dept. of Stomatology, Shanghai Fifth People, s Hospital, Fudan University, Shanghai 200240, China

Received:2020-09-02 Revised:2021-05-06 Online:2021-08-01 Published:2021-08-10
Contact: Hu Fengling E-mail:sl719896175@163.com;hfl415263@163.com
Supported by:
The Natural Science Foundation of Shanghai(19ZR1455100);Shanghai Minhang Science and Technology Commission(2019MHZ039);Scientific Research Project of Shanghai Minhang District Health and Planning Commission(2015MW05)

摘要/Abstract

摘要： 目的

为研究连续波技术联合高温热牙胶注射充填技术对牙周组织的表面温度影响，探究采用200 ℃热牙胶根管充填的安全性。

方法

采用CT技术、Mimics、Geomagic、Solidworks软件分别建立牙槽骨、牙本质、根管、牙周膜、血流的实体模型，利用Solidworks装配形成包含血流的牙齿有限元模型。基于ABAQUS协同仿真平台对整个根管充填过程进行流固耦合分析，得到牙周组织表面的温度。

结果

在无血流的情况下，在以200 ℃进行根管充填时牙周膜外表面的温度达到50.048 ℃；当考虑血流时，牙周膜外表面温度为39.570 ℃。

结论

以200 ℃连续波根管充填时牙周膜外表面温度升高，且不会对牙周组织造成损伤。

关键词: 连续波, 注射充填, 流固耦合, 牙周组织, 有限元模型, ABAQUS仿真

Abstract: Objective

The safety of root canal filling with 200 °C hot gutta-percha was investigated to study the effect of continuous wave technique combined with high-temperature injectable gutta-percha condensation technique on the surface temperature of periodontal tissue.

Methods

CT technique and Mimics, Geomagic, and Solidworks software were utilized to build the entity models of alveolar bone, dentin and root canal, periodontal ligament, and blood flow, respectively, which were then assembled in Solidworks into a finite element model of tooth with blood flow. By utilizing ABAQUS collaborative simulation platform, fluid-structure coupling was analyzed on the whole process of root canal filling. Consequently, the surface temperature of the periodontal tissue was obtained.

Results

In the absence of blood flow, the temperature of the periodontal ligament surface reached 50.048 ℃ during root canal filling with 200 ℃ gutta-percha. Considering blood flow, the temperature of periodontal ligament surface was 39.570 ℃.

Conclusion

The temperature of the periodontal ligament surface increased when the continuous wave root canal was filled with 200 ℃ gutta-percha, and the periodontal tissue was not damaged.

Key words: continuous wave, filling injection, fluid-structure interaction, periodontium, finite element model, ABAQUS simulation

中图分类号:

R 781.3

张建国, 刘隽, 岑蓉, 胡凤玲. 连续波充填技术对牙周组织温度影响的三维有限元分析[J]. 华西口腔医学杂志, 2021, 39(4): 447-452.

Zhang Jianguo, Liu Jun, Cen Rong, Hu Fengling. Finite element analysis of the effects of periodontal tissue temperature by continuous wave technique[J]. West China Journal of Stomatology, 2021, 39(4): 447-452.

图/表 7

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项目	密度/（×10^-3 kg·m^-3）	比热容/［×10^-3 J·(kg·K)^-1］	导热系数/［W·(m·K)^-1］
釉质	2.80	0.58	0.93
牙本质	1.96	0.58	0.58
牙周膜	1.10	0.58	0.58
牙槽骨	1.30	0.15	0.58
牙胶	0.97	0.50	0.15
血流	1.05	0.94	0.50

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连续波充填技术对牙周组织温度影响的三维有限元分析

Finite element analysis of the effects of periodontal tissue temperature by continuous wave technique

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