Mechanical testing and finite element analysis of orthodontic teardrop loop

M. E R Coimbra, Norman Duque Penedo, Jayme Pereira de Gouvêa, Carlos Nelson Elias, Mônica Tirre de Souza Araújo, Paulo Coelho

Research output: Contribution to journalArticle

Abstract

Introduction: Understanding how teeth move in response to mechanical loads is an important aspect of orthodontic treatment. Treatment planning should include consideration of the appliances that will meet the desired loading of the teeth to result in optimized treatment outcomes. The purpose of this study was to evaluate the use of computer simulation to predict the force and the torsion obtained after the activation of teardrop loops of 3 heights. Methods: Seventy-five retraction loops were divided into 3 groups according to height (6, 7, and 8 mm). The loops were subjected to tensile load through displacements of 0.5, 1.0, 1.5, and 2.0 mm, and the resulting forces and torques were recorded. The loops were designed in a CAD software, and finite element analysis was performed with Ansys software (version 7.0, Swanson Analysis System, Canonsburg, Pa). Statistical analysis of the mechanical experiment results was obtained by ANOVA and the Tukey post-hoc test (P <.01). The correlation test and the paired t test (P <.05) were used to compare the computer simulation with the mechanical experiment. Results and Conclusions: The computer simulation accurately predicted the experimentally determined mechanical behavior of teardrop loops of different heights and should be considered an alternative for designing orthodontic appliances before treatment.

Fingerprint

Finite Element Analysis
Orthodontics
Computer Simulation
Tooth
Software
Orthodontic Appliances
Torque
Analysis of Variance

ASJC Scopus subject areas

  • Surgery
  • Dentistry(all)

Cite this

Mechanical testing and finite element analysis of orthodontic teardrop loop. / Coimbra, M. E R; Penedo, Norman Duque; de Gouvêa, Jayme Pereira; Elias, Carlos Nelson; de Souza Araújo, Mônica Tirre; Coelho, Paulo.

In: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, Vol. 133, No. 2, 02.2008.

Research output: Contribution to journalArticle

@article{3e557e93b58c474183a8641bc3bd7cce,
title = "Mechanical testing and finite element analysis of orthodontic teardrop loop",
abstract = "Introduction: Understanding how teeth move in response to mechanical loads is an important aspect of orthodontic treatment. Treatment planning should include consideration of the appliances that will meet the desired loading of the teeth to result in optimized treatment outcomes. The purpose of this study was to evaluate the use of computer simulation to predict the force and the torsion obtained after the activation of teardrop loops of 3 heights. Methods: Seventy-five retraction loops were divided into 3 groups according to height (6, 7, and 8 mm). The loops were subjected to tensile load through displacements of 0.5, 1.0, 1.5, and 2.0 mm, and the resulting forces and torques were recorded. The loops were designed in a CAD software, and finite element analysis was performed with Ansys software (version 7.0, Swanson Analysis System, Canonsburg, Pa). Statistical analysis of the mechanical experiment results was obtained by ANOVA and the Tukey post-hoc test (P <.01). The correlation test and the paired t test (P <.05) were used to compare the computer simulation with the mechanical experiment. Results and Conclusions: The computer simulation accurately predicted the experimentally determined mechanical behavior of teardrop loops of different heights and should be considered an alternative for designing orthodontic appliances before treatment.",
author = "Coimbra, {M. E R} and Penedo, {Norman Duque} and {de Gouv{\^e}a}, {Jayme Pereira} and Elias, {Carlos Nelson} and {de Souza Ara{\'u}jo}, {M{\^o}nica Tirre} and Paulo Coelho",
year = "2008",
month = "2",
doi = "10.1016/j.ajodo.2007.07.017",
language = "English (US)",
volume = "133",
journal = "American Journal of Orthodontics and Dentofacial Orthopedics",
issn = "0889-5406",
publisher = "Mosby Inc.",
number = "2",

}

TY - JOUR

T1 - Mechanical testing and finite element analysis of orthodontic teardrop loop

AU - Coimbra, M. E R

AU - Penedo, Norman Duque

AU - de Gouvêa, Jayme Pereira

AU - Elias, Carlos Nelson

AU - de Souza Araújo, Mônica Tirre

AU - Coelho, Paulo

PY - 2008/2

Y1 - 2008/2

N2 - Introduction: Understanding how teeth move in response to mechanical loads is an important aspect of orthodontic treatment. Treatment planning should include consideration of the appliances that will meet the desired loading of the teeth to result in optimized treatment outcomes. The purpose of this study was to evaluate the use of computer simulation to predict the force and the torsion obtained after the activation of teardrop loops of 3 heights. Methods: Seventy-five retraction loops were divided into 3 groups according to height (6, 7, and 8 mm). The loops were subjected to tensile load through displacements of 0.5, 1.0, 1.5, and 2.0 mm, and the resulting forces and torques were recorded. The loops were designed in a CAD software, and finite element analysis was performed with Ansys software (version 7.0, Swanson Analysis System, Canonsburg, Pa). Statistical analysis of the mechanical experiment results was obtained by ANOVA and the Tukey post-hoc test (P <.01). The correlation test and the paired t test (P <.05) were used to compare the computer simulation with the mechanical experiment. Results and Conclusions: The computer simulation accurately predicted the experimentally determined mechanical behavior of teardrop loops of different heights and should be considered an alternative for designing orthodontic appliances before treatment.

AB - Introduction: Understanding how teeth move in response to mechanical loads is an important aspect of orthodontic treatment. Treatment planning should include consideration of the appliances that will meet the desired loading of the teeth to result in optimized treatment outcomes. The purpose of this study was to evaluate the use of computer simulation to predict the force and the torsion obtained after the activation of teardrop loops of 3 heights. Methods: Seventy-five retraction loops were divided into 3 groups according to height (6, 7, and 8 mm). The loops were subjected to tensile load through displacements of 0.5, 1.0, 1.5, and 2.0 mm, and the resulting forces and torques were recorded. The loops were designed in a CAD software, and finite element analysis was performed with Ansys software (version 7.0, Swanson Analysis System, Canonsburg, Pa). Statistical analysis of the mechanical experiment results was obtained by ANOVA and the Tukey post-hoc test (P <.01). The correlation test and the paired t test (P <.05) were used to compare the computer simulation with the mechanical experiment. Results and Conclusions: The computer simulation accurately predicted the experimentally determined mechanical behavior of teardrop loops of different heights and should be considered an alternative for designing orthodontic appliances before treatment.

UR - http://www.scopus.com/inward/record.url?scp=38749116632&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38749116632&partnerID=8YFLogxK

U2 - 10.1016/j.ajodo.2007.07.017

DO - 10.1016/j.ajodo.2007.07.017

M3 - Article

VL - 133

JO - American Journal of Orthodontics and Dentofacial Orthopedics

JF - American Journal of Orthodontics and Dentofacial Orthopedics

SN - 0889-5406

IS - 2

ER -