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BMC Oral Health

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Open Access 01-12-2023 | Aligner | Research

Evaluation of different models of intrusive force application and temporary anchorage device (TAD) placement in total arch intrusion using clear aligners; a finite element analysis

Authors: Allahyar Geramy, Soroush Ebrahimi

Published in: BMC Oral Health | Issue 1/2023

Abstract

Introduction

Present study aims to evaluate different models of total arch intrusion using clear aligners in a finite element setup, which might be helpful in gummy smile patients who seek this treatment modality.

Methods

Four patterns of intrusive forces were applied on each side of the upper arch aligner model: (1) Distal to the lateral incisors (facial − 80 g) and distal to the first molar (palatal − 150 g). (2) Distal to the lateral incisors (facial − 80 g) and distal to the first molars (facial − 80 g and palatal − 80 g). (3) Distal to the canines (facial − 80 g) and distal to the first molars (facial − 150 g). (4) Distal to the lateral incisors (facial − 80 g) and mesial to the first molars (facial − 150 g). Vertical and horizontal movements of the teeth were measured.

Results

Extrusion movements were solely detected at buccal cusps of the first and second molars in the first model. Palatal movements of posterior teeth were detected in this model. Model II showed a homogeneous intrusion in anterior and posterior teeth and the amount of palatal movements of posterior teeth was reduced compared to model I. In contrast to Model IV, Model III had more intrusion in the posterior compared to anterior teeth. Facial movements of posterior teeth were detected in the third and fourth models. Incisor teeth showed facial movements among all of the models except for the lateral incisor in the third model.

Conclusions

Each model of force application, causes different outcomes and side effects which is beneficial in certain clinical situations.

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Title: Evaluation of different models of intrusive force application and temporary anchorage device (TAD) placement in total arch intrusion using clear aligners; a finite element analysis
Authors: Allahyar Geramy
Soroush Ebrahimi
Publication date: 01-12-2023
Publisher: BioMed Central
Keyword: Aligner
Published in: BMC Oral Health / Issue 1/2023
Electronic ISSN: 1472-6831
DOI: https://doi.org/10.1186/s12903-023-03465-2

2024 ASCO Annual Meeting

Springer Medicine

Evaluation of different models of intrusive force application and temporary anchorage device (TAD) placement in total arch intrusion using clear aligners; a finite element analysis

Abstract

Introduction

Methods

Results

Conclusions

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusions

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