West China Journal of Stomatology ›› 2021, Vol. 39 ›› Issue (4): 447-452.doi: 10.7518/hxkq.2021.04.011

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

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

  1. 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)

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.


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.


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 ℃.


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

CLC Number: