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Finite element study on modification of bracket base and its effects on bond strength

OBJECTIVE: This article aims to analyze the difference in stresses generated in the bracket-cement-tooth system by means of a peel load in single and double-mesh bracket bases using a three-dimensional finite element computer model. MATERIAL AND METHODS: A three-dimensional finite element model of t...

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Autores principales: Shyagali, Tarulatha R., Bhayya, Deepak P., Urs, Chandralekha B., Subramaniam, Shashikala
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dental Press International 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445229/
https://www.ncbi.nlm.nih.gov/pubmed/25992991
http://dx.doi.org/10.1590/2176-9451.20.2.076-082.oar
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author Shyagali, Tarulatha R.
Bhayya, Deepak P.
Urs, Chandralekha B.
Subramaniam, Shashikala
author_facet Shyagali, Tarulatha R.
Bhayya, Deepak P.
Urs, Chandralekha B.
Subramaniam, Shashikala
author_sort Shyagali, Tarulatha R.
collection PubMed
description OBJECTIVE: This article aims to analyze the difference in stresses generated in the bracket-cement-tooth system by means of a peel load in single and double-mesh bracket bases using a three-dimensional finite element computer model. MATERIAL AND METHODS: A three-dimensional finite element model of the bracket-cement-tooth system was constructed and consisted of 40,536 bonds and 49,201 finite elements using a commercial mesh generating programmer (ANSYS 7.0). Both single and double-mesh bracket bases were modified by varying the diameter from 100-400 µm progressively, and the spacing between the mesh wires was kept at 300 µm for each diameter of wire. A peel load was applied on the model to study the stresses generated in different layers. RESULTS: In case of double-mesh bracket base, there was reduction in stress generation at the enamel in comparison to single-mesh bracket base. There was no difference in stress generated at the bracket layer between single and double-mesh bracket bases. At the impregnated wire mesh (IWM), layer stresses increased as the wire diameter of the mesh increased. CONCLUSION: Results show that bracket design modification can improve bonding abilities and simultaneously reduce enamel damage while debonding. These facts may be used in bringing about the new innovative bracket designs for clinical use.
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spelling pubmed-44452292015-05-28 Finite element study on modification of bracket base and its effects on bond strength Shyagali, Tarulatha R. Bhayya, Deepak P. Urs, Chandralekha B. Subramaniam, Shashikala Dental Press J Orthod Articles OBJECTIVE: This article aims to analyze the difference in stresses generated in the bracket-cement-tooth system by means of a peel load in single and double-mesh bracket bases using a three-dimensional finite element computer model. MATERIAL AND METHODS: A three-dimensional finite element model of the bracket-cement-tooth system was constructed and consisted of 40,536 bonds and 49,201 finite elements using a commercial mesh generating programmer (ANSYS 7.0). Both single and double-mesh bracket bases were modified by varying the diameter from 100-400 µm progressively, and the spacing between the mesh wires was kept at 300 µm for each diameter of wire. A peel load was applied on the model to study the stresses generated in different layers. RESULTS: In case of double-mesh bracket base, there was reduction in stress generation at the enamel in comparison to single-mesh bracket base. There was no difference in stress generated at the bracket layer between single and double-mesh bracket bases. At the impregnated wire mesh (IWM), layer stresses increased as the wire diameter of the mesh increased. CONCLUSION: Results show that bracket design modification can improve bonding abilities and simultaneously reduce enamel damage while debonding. These facts may be used in bringing about the new innovative bracket designs for clinical use. Dental Press International 2015 /pmc/articles/PMC4445229/ /pubmed/25992991 http://dx.doi.org/10.1590/2176-9451.20.2.076-082.oar Text en http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Articles
Shyagali, Tarulatha R.
Bhayya, Deepak P.
Urs, Chandralekha B.
Subramaniam, Shashikala
Finite element study on modification of bracket base and its effects on bond strength
title Finite element study on modification of bracket base and its effects on bond strength
title_full Finite element study on modification of bracket base and its effects on bond strength
title_fullStr Finite element study on modification of bracket base and its effects on bond strength
title_full_unstemmed Finite element study on modification of bracket base and its effects on bond strength
title_short Finite element study on modification of bracket base and its effects on bond strength
title_sort finite element study on modification of bracket base and its effects on bond strength
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445229/
https://www.ncbi.nlm.nih.gov/pubmed/25992991
http://dx.doi.org/10.1590/2176-9451.20.2.076-082.oar
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