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

doi:10.7518/hxkq.2021.04.011

Abstract

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

CLC Number:

R 781.3

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.

Figures/Tables 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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