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

Jian-guo Zhang; Jun Liu; Rong Cen; Feng-ling HU

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

Author: Jian-Guo ZHANG ¹ ; Jun LIU ¹ ; Rong CEN ² ; Feng-Ling HU ³
Author Information

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.
Publication Type:Journal Article
Keywords: ABAQUS simulation; continuous wave; filling injection; finite element model; fluid-structure interaction; periodontium
MeSH: Dental Pulp Cavity; Finite Element Analysis; Gutta-Percha; Hot Temperature; Humans; Periodontium; Root Canal Filling Materials; Root Canal Obturation; Temperature
From: West China Journal of Stomatology 2021;39(4):447-452
CountryChina
Language:English
Abstract: OBJECTIVES: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 ℃.
CONCLUSIONS: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.