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Published in: Clinical Oral Investigations 5/2018

01-06-2018 | Original Article

Bond strength of adhesive systems to sound and demineralized dentin treated with bioactive glass ceramic suspension

Authors: Renata Costa de Morais, Renata Espíndola Silveira, Michelle Chinelatti, Saulo Geraldeli, Fernanda de Carvalho Panzeri Pires-de-Souza

Published in: Clinical Oral Investigations | Issue 5/2018

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Abstract

Objective

The objective of this study was to evaluate the effect of a Biosilicate®, associated with dentin adhesive system, on microtensile bond strength (μTBS) to sound and demineralized dentin.

Materials and methods

Eighty sound-extracted molars had their middle occlusal dentin exposed. In forty teeth, dentin was artificially demineralized (pH cycling). Sound and demineralized dentin teeth were separated into four groups (n = 10), according to the substrate treatment before restoration: Group 1—total-etching adhesive Adper TM Single bond 2 (ASB) + Biosilicate®, Group 2—ASB (without Biosilicate®), Group 3—AdheSE self-etching adhesive system (AdSE) + Biosilicate®, and Group 4—AdSE (without Biosilicate®). Each tooth was restored with a hybrid composite and stored in water at 37 °C for 6 months. After water aging, teeth were cut in sticks (≈ 1 mm2 cross-sectional area) and all samples were submitted to μTBS test. The fracture modes of the samples were analyzed by stereomicroscopy. The representatively fractured samples were observed by scanning electron microscopy. Representative samples of each group were analyzed on energy dispersive X-ray spectrometry (EDX). The μTBS and Ca-P ratio values were analyzed by 2-way ANOVA, Bonferroni, and Tukey test, respectively, p < .05.

Results

ASB + Biosilicate® presented the highest μTBS values (p < .05), and lowest μTBS values (p < .05) were found in AdSE Group. There was no statistical difference (p < .05) on μTBS when substrates were compared, except for Group 2. The fracture pattern analysis showed prevalence of adhesive fractures in all groups.

Conclusion

Biosilicate® enhanced bond strength of self-etching and etch-and-rinse adhesives to sound and demineralized dentin.

Clinical relevance

Bioactive glass ceramic suspension could be recommended to be used to improve the dentin bond strengths of the total-etching and self-etching adhesives after acid-etching and priming.
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Metadata
Title
Bond strength of adhesive systems to sound and demineralized dentin treated with bioactive glass ceramic suspension
Authors
Renata Costa de Morais
Renata Espíndola Silveira
Michelle Chinelatti
Saulo Geraldeli
Fernanda de Carvalho Panzeri Pires-de-Souza
Publication date
01-06-2018
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 5/2018
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-017-2283-z

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