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Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods

OBJECTIVE: The aim of this study was to compare the effects of three enamel etching modes - laser-etch, self-etch and acid-etch (5, 10 and 15 s) - on bracket bonding, using a universal adhesive. METHODS: Eighty-four maxillary premolars were randomly divided into seven groups (n=12) based on the etch...

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Autores principales: Shafiei, Fereshteh, Sardarian, Ahmadreza, Fekrazad, Reza, Farjood, Amin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dental Press International 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6733226/
https://www.ncbi.nlm.nih.gov/pubmed/31508704
http://dx.doi.org/10.1590/2177-6709.24.4.33.e1-8.onl
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author Shafiei, Fereshteh
Sardarian, Ahmadreza
Fekrazad, Reza
Farjood, Amin
author_facet Shafiei, Fereshteh
Sardarian, Ahmadreza
Fekrazad, Reza
Farjood, Amin
author_sort Shafiei, Fereshteh
collection PubMed
description OBJECTIVE: The aim of this study was to compare the effects of three enamel etching modes - laser-etch, self-etch and acid-etch (5, 10 and 15 s) - on bracket bonding, using a universal adhesive. METHODS: Eighty-four maxillary premolars were randomly divided into seven groups (n=12) based on the etching method and the adhesive used for bracket bonding. After water storage and thermocycling, shear bond strength was measured, and adhesive remnant index scores on debonded enamel were determined. RESULTS: There were significant differences between the seven groups regarding bond strength values (p< 0.001). The highest values were observed in universal adhesive with laser etching group, while Transbond XT with acid or laser etching, and universal adhesive used in self-etch mode demonstrated the lowest bond strength. The universal adhesive with the three different etching times presented with statistically similar results, all showing an improvement in bond strength, compared with Scotchbond universal (SBU)/SE. CONCLUSIONS: The universal adhesive evaluated in the present study demonstrated statistically similar bond strengths to conventional orthodontic adhesive in self-etch mode. The bond strength can be improved by adding an initial acid etching or laser conditioning step, although enamel damage was observed in some cases.
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spelling pubmed-67332262019-09-13 Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods Shafiei, Fereshteh Sardarian, Ahmadreza Fekrazad, Reza Farjood, Amin Dental Press J Orthod Online Articles OBJECTIVE: The aim of this study was to compare the effects of three enamel etching modes - laser-etch, self-etch and acid-etch (5, 10 and 15 s) - on bracket bonding, using a universal adhesive. METHODS: Eighty-four maxillary premolars were randomly divided into seven groups (n=12) based on the etching method and the adhesive used for bracket bonding. After water storage and thermocycling, shear bond strength was measured, and adhesive remnant index scores on debonded enamel were determined. RESULTS: There were significant differences between the seven groups regarding bond strength values (p< 0.001). The highest values were observed in universal adhesive with laser etching group, while Transbond XT with acid or laser etching, and universal adhesive used in self-etch mode demonstrated the lowest bond strength. The universal adhesive with the three different etching times presented with statistically similar results, all showing an improvement in bond strength, compared with Scotchbond universal (SBU)/SE. CONCLUSIONS: The universal adhesive evaluated in the present study demonstrated statistically similar bond strengths to conventional orthodontic adhesive in self-etch mode. The bond strength can be improved by adding an initial acid etching or laser conditioning step, although enamel damage was observed in some cases. Dental Press International 2019 /pmc/articles/PMC6733226/ /pubmed/31508704 http://dx.doi.org/10.1590/2177-6709.24.4.33.e1-8.onl Text en https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License
spellingShingle Online Articles
Shafiei, Fereshteh
Sardarian, Ahmadreza
Fekrazad, Reza
Farjood, Amin
Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title_full Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title_fullStr Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title_full_unstemmed Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title_short Comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
title_sort comparison of shear bond strength of orthodontic brackets bonded with a universal adhesive using different etching methods
topic Online Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6733226/
https://www.ncbi.nlm.nih.gov/pubmed/31508704
http://dx.doi.org/10.1590/2177-6709.24.4.33.e1-8.onl
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