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Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite

Background: The newly introduced self-adhering flowable resin-composites decrease the required time for application by incorporation of an acidic adhesive monomer, thus reducing the number of steps, but its bonding is still uncertain. The aim of this study was to evaluate the interfacial microscopic...

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Autor principal: Hamdy, Tamer M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: F1000 Research Limited 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5649117/
https://www.ncbi.nlm.nih.gov/pubmed/29118975
http://dx.doi.org/10.12688/f1000research.12306.4
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author Hamdy, Tamer M.
author_facet Hamdy, Tamer M.
author_sort Hamdy, Tamer M.
collection PubMed
description Background: The newly introduced self-adhering flowable resin-composites decrease the required time for application by incorporation of an acidic adhesive monomer, thus reducing the number of steps, but its bonding is still uncertain. The aim of this study was to evaluate the interfacial microscopic examination and chemical analysis at the resin-dentin interface of a self-adhering flowable resin composite (Vertise™Flow Self-Adhering Flowable Composite, Kerr Dental, USA) versus a total-etch (Te-Econom Plus) resin composite, using an etching agent (Eco-Etch gel) and bonding agent (Single Bond Universal). Methods: Sixteen freshly extracted sound human posterior teeth were used. The teeth were randomly divided into two groups: 8 specimens per type of composite. Standard-shaped class V cavities were prepared on the buccal surface. One group was restored by Te-Econom Plus resin composite by total-etch technique using Eco-Etch gel, which was applied to dentine for 15 seconds, followed by rinsing, drying and bonding agent application (Single Bond Universal). The other group restored directly with self-adhering resin composite (Vertise-Flow) without application of etch or bond. Curing was done for 20 seconds using a light emitting diode light curing unit. Evaluation of the resin-dentin interface was done microscopically by examination of marginal gap distance in μm using scanning electron microscope (SEM), and chemical analysis of silver particles was observed using SEM with energy-dispersive X-ray spectrometry after 24 hours of specimen storage in ammoniacal silver nitrate. Results: Regarding marginal gap distance (µm) and silver atomic % mean values, teeth restored with self-adhering resin composite (Vertise-Flow) showed significantly higher mean values than the multi-step etch and rinse resin composite group (5.2 vs 0; 12.2 vs 8.2, respectively). Conclusions: Resin-dentin bonding using total-etch resin composite technique was more effective than self-adhering flowable resin composite (Vertise-Flow) regarding marginal gap formation and penetration of silver particles. Further studies for bond strength could be performed.
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spelling pubmed-56491172017-11-07 Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite Hamdy, Tamer M. F1000Res Research Article Background: The newly introduced self-adhering flowable resin-composites decrease the required time for application by incorporation of an acidic adhesive monomer, thus reducing the number of steps, but its bonding is still uncertain. The aim of this study was to evaluate the interfacial microscopic examination and chemical analysis at the resin-dentin interface of a self-adhering flowable resin composite (Vertise™Flow Self-Adhering Flowable Composite, Kerr Dental, USA) versus a total-etch (Te-Econom Plus) resin composite, using an etching agent (Eco-Etch gel) and bonding agent (Single Bond Universal). Methods: Sixteen freshly extracted sound human posterior teeth were used. The teeth were randomly divided into two groups: 8 specimens per type of composite. Standard-shaped class V cavities were prepared on the buccal surface. One group was restored by Te-Econom Plus resin composite by total-etch technique using Eco-Etch gel, which was applied to dentine for 15 seconds, followed by rinsing, drying and bonding agent application (Single Bond Universal). The other group restored directly with self-adhering resin composite (Vertise-Flow) without application of etch or bond. Curing was done for 20 seconds using a light emitting diode light curing unit. Evaluation of the resin-dentin interface was done microscopically by examination of marginal gap distance in μm using scanning electron microscope (SEM), and chemical analysis of silver particles was observed using SEM with energy-dispersive X-ray spectrometry after 24 hours of specimen storage in ammoniacal silver nitrate. Results: Regarding marginal gap distance (µm) and silver atomic % mean values, teeth restored with self-adhering resin composite (Vertise-Flow) showed significantly higher mean values than the multi-step etch and rinse resin composite group (5.2 vs 0; 12.2 vs 8.2, respectively). Conclusions: Resin-dentin bonding using total-etch resin composite technique was more effective than self-adhering flowable resin composite (Vertise-Flow) regarding marginal gap formation and penetration of silver particles. Further studies for bond strength could be performed. F1000 Research Limited 2018-10-23 /pmc/articles/PMC5649117/ /pubmed/29118975 http://dx.doi.org/10.12688/f1000research.12306.4 Text en Copyright: © 2018 Hamdy TM http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Hamdy, Tamer M.
Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title_full Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title_fullStr Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title_full_unstemmed Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title_short Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
title_sort interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5649117/
https://www.ncbi.nlm.nih.gov/pubmed/29118975
http://dx.doi.org/10.12688/f1000research.12306.4
work_keys_str_mv AT hamdytamerm interfacialmicroscopicexaminationandchemicalanalysisofresindentininterfaceofselfadheringflowableresincomposite