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Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis
Background. The design of an orthodontic mini-implant is a significant factor in determining its primary stability and its clinical success. The aim of this study was to measure the relative effect of mini-implant design factors on primary stability of orthodontic mini-implants. Methods. Thirty-two...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Tabriz University of Medical Sciences
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6773917/ https://www.ncbi.nlm.nih.gov/pubmed/31592304 http://dx.doi.org/10.15171/joddd.2019.013 |
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author | Sadr Haghighi, Amir Hooman Pouyafar, Vahid Navid, Ali Eskandarinezhad, Mahsa Abdollahzadeh Baghaei, Tannaz |
author_facet | Sadr Haghighi, Amir Hooman Pouyafar, Vahid Navid, Ali Eskandarinezhad, Mahsa Abdollahzadeh Baghaei, Tannaz |
author_sort | Sadr Haghighi, Amir Hooman |
collection | PubMed |
description | Background. The design of an orthodontic mini-implant is a significant factor in determining its primary stability and its clinical success. The aim of this study was to measure the relative effect of mini-implant design factors on primary stability of orthodontic mini-implants. Methods. Thirty-two 3-dimensional assemblies of mini-implant models with their surrounding bone were generated using finite element analysis software. The maximum displacement of each mini-implant model was measured as they were loaded with a 2-N horizontal force. Employing Taguchi’s design of experiments as a statistical method, the contribution of each design factor to primary stability was calculated. As a result of the great effect of the upper diameter and length, to better detect the impact of the remaining design factors, another set of 25 models with a fixed amount of length and diameter was generated and evaluated. Results. The diameter and length showed a great impact on the primary stability in the first set of experiments (P<0.05). According to the second set of experiments, increased taper angle in the threaded and non-threaded area decreased the primary stability. There was also an optimum amount of 2.5 mm for threaded taper length beyond which the primary stability decreased. Conclusion. It is advisable to increase the diameter and length if primary stability is at risk. In the second place, a minimum amount of taper angle, both in the threaded and non-threaded area with an approximate proportion of 20% of threaded taper length to MI length, would be desirable for MIs with a moderate size. |
format | Online Article Text |
id | pubmed-6773917 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Tabriz University of Medical Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-67739172019-10-07 Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis Sadr Haghighi, Amir Hooman Pouyafar, Vahid Navid, Ali Eskandarinezhad, Mahsa Abdollahzadeh Baghaei, Tannaz J Dent Res Dent Clin Dent Prospects Original Article Background. The design of an orthodontic mini-implant is a significant factor in determining its primary stability and its clinical success. The aim of this study was to measure the relative effect of mini-implant design factors on primary stability of orthodontic mini-implants. Methods. Thirty-two 3-dimensional assemblies of mini-implant models with their surrounding bone were generated using finite element analysis software. The maximum displacement of each mini-implant model was measured as they were loaded with a 2-N horizontal force. Employing Taguchi’s design of experiments as a statistical method, the contribution of each design factor to primary stability was calculated. As a result of the great effect of the upper diameter and length, to better detect the impact of the remaining design factors, another set of 25 models with a fixed amount of length and diameter was generated and evaluated. Results. The diameter and length showed a great impact on the primary stability in the first set of experiments (P<0.05). According to the second set of experiments, increased taper angle in the threaded and non-threaded area decreased the primary stability. There was also an optimum amount of 2.5 mm for threaded taper length beyond which the primary stability decreased. Conclusion. It is advisable to increase the diameter and length if primary stability is at risk. In the second place, a minimum amount of taper angle, both in the threaded and non-threaded area with an approximate proportion of 20% of threaded taper length to MI length, would be desirable for MIs with a moderate size. Tabriz University of Medical Sciences 2019 2019-08-14 /pmc/articles/PMC6773917/ /pubmed/31592304 http://dx.doi.org/10.15171/joddd.2019.013 Text en © 2019 Sadr Haghighi et al. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article published and distributed by Tabriz University of Medical Sciences under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Sadr Haghighi, Amir Hooman Pouyafar, Vahid Navid, Ali Eskandarinezhad, Mahsa Abdollahzadeh Baghaei, Tannaz Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title | Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title_full | Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title_fullStr | Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title_full_unstemmed | Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title_short | Investigation of the optimal design of orthodontic mini-implants based on the primary stability: A finite element analysis |
title_sort | investigation of the optimal design of orthodontic mini-implants based on the primary stability: a finite element analysis |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6773917/ https://www.ncbi.nlm.nih.gov/pubmed/31592304 http://dx.doi.org/10.15171/joddd.2019.013 |
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