A finite element method study to compare enmasse retraction of maxillary anteriors using mini implant and conventional anchorage method

---

Original Article

Author Details : Mohit Makkar*, Astitav Mittal, Ashish Gupta, Nazia Beg

Volume : 8, Issue : 2, Year : 2024

Article Page : 141-148

https://doi.org/10.18231/j.jco.2024.023

Suggest article by email

---

Abstract

Introduction: Increased upper lip procumbency is associated with protrusive maxillary dentition in Angle’s class I malocclusion, creating unaesthetic facial profile, leading to the need of orthodontic treatment where Enmasse retraction will require maximum anchorage.
The present study was conducted to compare Enmasse retraction of maxillary anteriors using mini implant and conventional anchorage in Angle’s Class I malocclusion with bimaxillary protrusion.
Materials and Methods: A numeric approach was adopted. Finite element method was used to determine the stress and displacement of various components at a given time by dividing it into two groups namely, Implant arrangement and T- loop arrangement for enmasse retraction.
Results: Significant differences were observed when the stress values were compared between Implant arrangement and T-loop arrangement. In Implant arrangement highest stress values were seen around the lateral incisors and in T loop arrangement stresses were found around canine and premolar. Comparison of displacement in both arrangements gave results of greater displacement in anterior and posterior segments in T-loop arrangement.
Conclusion: Mini implants were considered more effective for enmasse retraction but in this study, it was found that although the rate of retraction/ displacement was more in T-loop arrangement but Mini implants in implant arrangement served as an absolute anchorage.

Keywords: Temporary anchorage devices, Finite Element Method, Periodontal Iigaments (PDL)

How to cite : Makkar M, Mittal A, Gupta A, Beg N, A finite element method study to compare enmasse retraction of maxillary anteriors using mini implant and conventional anchorage method. J Contemp Orthod 2024;8(2):141-148

This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International, which allows others to remix, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.