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Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets

BACKGROUND: The aim of the present study is to evaluate the effects of a fluoride-releasing composite resin bonding material on reducing enamel demineralization underneath and around orthodontic brackets and compare that with a conventional adhesive system. MATERIALS AND METHODS: Buccal surfaces of...

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Autores principales: Raji, Seyed Hamid, Banimostafaee, Hamed, Hajizadeh, Fatemeh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3955318/
https://www.ncbi.nlm.nih.gov/pubmed/24688563
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author Raji, Seyed Hamid
Banimostafaee, Hamed
Hajizadeh, Fatemeh
author_facet Raji, Seyed Hamid
Banimostafaee, Hamed
Hajizadeh, Fatemeh
author_sort Raji, Seyed Hamid
collection PubMed
description BACKGROUND: The aim of the present study is to evaluate the effects of a fluoride-releasing composite resin bonding material on reducing enamel demineralization underneath and around orthodontic brackets and compare that with a conventional adhesive system. MATERIALS AND METHODS: Buccal surfaces of 10 intact extracted premolar teeth were divided into two parts with nail varnish and stainless steel brackets were randomly bonded by two resin composite systems: (Transbond XT) and (Transbond XT plus Color Change) (3M, Unitek, Monrovia, CA, USA) on two sides of the teeth and then samples were placed in a demineralization solution. It is claimed that the second system has the ability of fluoride release. Elastic modulus and hardness of enamel were measured with nanoindentation test in 6 depths in 1-36 μm from the enamel surface and in 7 regions: Control (intact enamel surface), underneath the brackets and also 50 and 100 μm from the brackets edge. These nanomechanical features were evaluated in different regions and depths using analysis of variance and paired t-test (P < 0.05). RESULTS: Considerable difference can be seen in different depths and regions in terms of hardness and elastic modulus. The region under the bracket with fluoridated adhesive shows similar results with intact enamel, whereas these parameters in fluoride less side show a significant reduction (P < 0.05). CONCLUSION: Results show that use of resin composite bonding system with the ability of fluoride release for bracket bonding, may reduce demineralization of enamel around brackets during orthodontic treatment.
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spelling pubmed-39553182014-03-31 Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets Raji, Seyed Hamid Banimostafaee, Hamed Hajizadeh, Fatemeh Dent Res J (Isfahan) Original Article BACKGROUND: The aim of the present study is to evaluate the effects of a fluoride-releasing composite resin bonding material on reducing enamel demineralization underneath and around orthodontic brackets and compare that with a conventional adhesive system. MATERIALS AND METHODS: Buccal surfaces of 10 intact extracted premolar teeth were divided into two parts with nail varnish and stainless steel brackets were randomly bonded by two resin composite systems: (Transbond XT) and (Transbond XT plus Color Change) (3M, Unitek, Monrovia, CA, USA) on two sides of the teeth and then samples were placed in a demineralization solution. It is claimed that the second system has the ability of fluoride release. Elastic modulus and hardness of enamel were measured with nanoindentation test in 6 depths in 1-36 μm from the enamel surface and in 7 regions: Control (intact enamel surface), underneath the brackets and also 50 and 100 μm from the brackets edge. These nanomechanical features were evaluated in different regions and depths using analysis of variance and paired t-test (P < 0.05). RESULTS: Considerable difference can be seen in different depths and regions in terms of hardness and elastic modulus. The region under the bracket with fluoridated adhesive shows similar results with intact enamel, whereas these parameters in fluoride less side show a significant reduction (P < 0.05). CONCLUSION: Results show that use of resin composite bonding system with the ability of fluoride release for bracket bonding, may reduce demineralization of enamel around brackets during orthodontic treatment. Medknow Publications & Media Pvt Ltd 2014 /pmc/articles/PMC3955318/ /pubmed/24688563 Text en Copyright: © Dental Research Journal http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Raji, Seyed Hamid
Banimostafaee, Hamed
Hajizadeh, Fatemeh
Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title_full Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title_fullStr Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title_full_unstemmed Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title_short Effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
title_sort effects of fluoride release from orthodontic bonding materials on nanomechanical properties of the enamel around orthodontic brackets
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3955318/
https://www.ncbi.nlm.nih.gov/pubmed/24688563
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