Evaluation of the Biomechanical Properties of Endodontic Files with Different Taper Angles Using Finite Element Analysis

Year 2024, , 271 - 279, 31.10.2024

Mehmet Eskibağlar , Serkan Erdem

https://doi.org/10.62520/fujece.1456044

Abstract

This study aims to evaluate the stress distribution of nickel-titanium (Ni-Ti) rotary tools with different conical angles during bending and torsion using finite element analysis (FEA). For the study, rotary file models with fixed taper angles of 0.02, 0.04, and 0.06 were modeled using Solidworks software. These models were transferred to Ansys software. It was performed according to the ISO 3630-1 specification using the SEA method to evaluate the flexibility and torsional stiffness of the files. According to the test results, the file system with a 0.02 taper angle showed higher flexibility when subjected to bending compared to the files with 0.04 and 0.06 taper angles. Regarding torsional resistance, the rotary file with a 0.06 taper angle demonstrated higher torsional resistance than the files with 0.02 and 0.04 taper angles. The geometry of the instrument affects the mechanical behavior (bending and torsional) of rotary files. Clinicians should be aware of the behavioral differences in rotary files and, in addition to following manufacturer instructions, should use the appropriate file according to the clinical situation

Keywords

Endodontic file, Bending test, Torsional test, Finite element analysis

Farklı Taper Açılarına Sahip Endodontik Eğelerin Biyomekanik Özelliklerinin Sonlu Elemanlar Analiziyle Değerlendirilmesi

Abstract

Bu çalışma, farklı konik açılara sahip nikel-titanyum (Ni-Ti) döner aletlerin bükülme ve burulma sırasındaki gerilim dağılımını sonlu elemanlar analizi (SEA) kullanılarak değerlendirilmeyi amaçlamaktadır. Çalışma için 0.02, 0.04 ve 0.06 sabit taper açılarına sahip döner alet eğeleri Solidworks yazılımı kullanılarak modellendi. Bu modeller Ansys yazılımına aktarıldı. Eğelerin esnekliğini ve burulma sertliğini değerlendirmek için SEA yöntemi kullanılarak, ISO 3630-1 spesifikasyonuna göre gerçekleştirildi. Test sonuçlarına göre 0.02 taper açısına sahip eğe sistemi bükülmeye maruz kaldığında 0.04 ve 0.06 tapera sahip eğelerden daha yüksek esneklik gösterdi. Burulma direnci açısından 0.06 taper açısına sahip döner eğe, 0.02 ve 0.04 taper açısına sahip eğelerden daha yüksek burulma direnci gösterdi. Aletin geometrisi, döner eğelerin mekanik davranışını (bükülme ve burulma) etkilemektedir. Klinisyen döner eğelerdeki davranışsal farklılıkların farkında olmalı, üretici talimatlarına ek olarak klinik duruma göre uygun eğeyi kullanmalıdır. Bu çalışma, farklı konik açılara sahip nikel-titanyum (Ni-Ti) döner aletlerin bükülme ve burulma sırasındaki gerilim dağılımını sonlu elemanlar analizi (FEA) kullanılarak değerlendirilmeyi amaçlamaktadır.

Keywords

Endodontik eğe, Bükme testi, Burulma testi, Sonlu elemanlar analizi

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