Analysis of root canal filling materials after apical barrier technique in the second mandibular premolar FEA
YU Ding-yi
ZHAO Wen-jing
SU Ma-jing
GE Wen-hua
WANG Er-hui
DAI Quan
Abstract：AIM:To compare five root canal upper segment filling materials(Glass lonomer Cement,Composite Resin,Guttar-Percha,Biodentin,Fiber-Rein Forced Post)after apical barrier surgery for the mandibular second premolar at the apical development stage 9,and identify which material better protects the root canal wall and apical dental tissue,providing a reference for clinical practice.METHODS:Using CBCT,ABAQUS2020,and other software,a model of the mandibular second premolar with an unclosed apical foramen was established to simulate force loading,analyze stress distribution,and maximum deformation.RESULTS:Among these materials,Biodentin exerts the smallest equivalent stress on the tooth when used as a filling material.However,when fiber posts are used for filling,the equivalent stress on the root canal wall and apex is the smallest compared to the other four materials.CONCLUSION:At the apical development stage 9,using fiber posts or Biodentin for the upper segment of the mandibular second premolar root canal can reduce the stress on the root canal wall and apical area,and lower the risk of root fracture.
Keywords：apical barrier surgerythree-dimensional finite elementmandibular second premolarroot canal filling materials
Publication Date：2025-05-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 262-266 )