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Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin
OBJECTIVES: This study investigated whether increasing the concentration of acidic monomers in one-step adhesives would allow reducing their application time without interfering with the bonding ability to primary enamel and dentin. MATERIAL AND METHODS: Experimental one-step self-etch adhesives wer...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Faculdade De Odontologia De Bauru - USP
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804389/ https://www.ncbi.nlm.nih.gov/pubmed/29069150 http://dx.doi.org/10.1590/1678-7757-2016-0627 |
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author | Botelho, Maria Paula Jacobucci Isolan, Cristina Pereira Schwantz, Júlia Kaster Lopes, Murilo Baena de Moraes, Rafael Ratto |
author_facet | Botelho, Maria Paula Jacobucci Isolan, Cristina Pereira Schwantz, Júlia Kaster Lopes, Murilo Baena de Moraes, Rafael Ratto |
author_sort | Botelho, Maria Paula Jacobucci |
collection | PubMed |
description | OBJECTIVES: This study investigated whether increasing the concentration of acidic monomers in one-step adhesives would allow reducing their application time without interfering with the bonding ability to primary enamel and dentin. MATERIAL AND METHODS: Experimental one-step self-etch adhesives were formulated with 5 wt% (AD5), 20 wt% (AD20), or 35 wt% (AD35) acidic monomer. The adhesives were applied using rubbing motion for 5, 10, or 20 s. Bond strengths to primary enamel and dentin were tested under shear stress. A commercial etch-and-rinse adhesive (Single Bond 2; 3M ESPE) served as reference. Scanning electron microscopy was used to observe the morphology of bonded interfaces. Data were analysed at p<0.05. RESULTS: In enamel, AD35 had higher bond strength when rubbed for at least 10 s, while application for 5 s generated lower bond strength. In dentin, increased acidic monomer improved bonding only for 20 s rubbing time. The etch-and-rinse adhesive yielded higher bond strength to enamel and similar bonding to dentin as compared with the self-etch adhesives. The adhesive layer was thicker and more irregular for the etch-and-rinse material, with no appreciable differences among the self-etch systems. CONCLUSION: Overall, increasing the acidic monomer concentration only led to an increase in bond strength to enamel when the rubbing time was at least 10 s. In dentin, despite the increase in bond strength with longer rubbing times, the results favoured the experimental adhesives compared to the conventional adhesive. Reduced rubbing time of self-etch adhesives should be avoided in the clinical setup. |
format | Online Article Text |
id | pubmed-5804389 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Faculdade De Odontologia De Bauru - USP |
record_format | MEDLINE/PubMed |
spelling | pubmed-58043892018-02-14 Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin Botelho, Maria Paula Jacobucci Isolan, Cristina Pereira Schwantz, Júlia Kaster Lopes, Murilo Baena de Moraes, Rafael Ratto J Appl Oral Sci Original Article OBJECTIVES: This study investigated whether increasing the concentration of acidic monomers in one-step adhesives would allow reducing their application time without interfering with the bonding ability to primary enamel and dentin. MATERIAL AND METHODS: Experimental one-step self-etch adhesives were formulated with 5 wt% (AD5), 20 wt% (AD20), or 35 wt% (AD35) acidic monomer. The adhesives were applied using rubbing motion for 5, 10, or 20 s. Bond strengths to primary enamel and dentin were tested under shear stress. A commercial etch-and-rinse adhesive (Single Bond 2; 3M ESPE) served as reference. Scanning electron microscopy was used to observe the morphology of bonded interfaces. Data were analysed at p<0.05. RESULTS: In enamel, AD35 had higher bond strength when rubbed for at least 10 s, while application for 5 s generated lower bond strength. In dentin, increased acidic monomer improved bonding only for 20 s rubbing time. The etch-and-rinse adhesive yielded higher bond strength to enamel and similar bonding to dentin as compared with the self-etch adhesives. The adhesive layer was thicker and more irregular for the etch-and-rinse material, with no appreciable differences among the self-etch systems. CONCLUSION: Overall, increasing the acidic monomer concentration only led to an increase in bond strength to enamel when the rubbing time was at least 10 s. In dentin, despite the increase in bond strength with longer rubbing times, the results favoured the experimental adhesives compared to the conventional adhesive. Reduced rubbing time of self-etch adhesives should be avoided in the clinical setup. Faculdade De Odontologia De Bauru - USP 2017 /pmc/articles/PMC5804389/ /pubmed/29069150 http://dx.doi.org/10.1590/1678-7757-2016-0627 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, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Botelho, Maria Paula Jacobucci Isolan, Cristina Pereira Schwantz, Júlia Kaster Lopes, Murilo Baena de Moraes, Rafael Ratto Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title | Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title_full | Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title_fullStr | Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title_full_unstemmed | Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title_short | Rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
title_sort | rubbing time and bonding performance of one-step adhesives to primary enamel and dentin |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804389/ https://www.ncbi.nlm.nih.gov/pubmed/29069150 http://dx.doi.org/10.1590/1678-7757-2016-0627 |
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