Torque Control of Upper Incisor in Intrusive Loads and Comparison of the Lingual and Labial Bracket Systems: A Finite Element Analysis View PDF

^*Sedigheh Sheikhzadeh
Department Of Orthodontics, Tehran University Of Medical Sciences, Iran, Islamic Republic Of

^*Corresponding Author:

Sedigheh Sheikhzadeh
Department Of Orthodontics, Tehran University Of Medical Sciences, Iran, Islamic Republic Of
Email:s-sheikhzadeh@razi.tums.ac.ir

Published on: 2014-09-05

Abstract

The aim of present study was to investigate the difference of torque control during intrusion force in incisors with normal, under and over-torque in lingual and labial orthodontic systems through finite element analysis. 3D models of an upper right central incisor with different torques were designed in Solid Works 2006.The models were transferred to the ANSYS Workbench Version 12.1.An intrusive force of 0.15 N was applied to the bracket slot in different models and the displacements along a path of nodes in the central incisor was assessed.

Keywords

Finite element method; Intrusion; Labial orthodontic system; Lingual orthodontic system

Introduction

During the past decade, the number of adults looking for orthodontic treatment had increased. Lingual orthodontics (LiO) is a solution for aesthetic concerns among these patients who are not willing to have visible brackets on labial surface.