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In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems

This study aimed to compare the shear bond strength (SBS) and adhesive remaining index (ARI) using one conventional and two novel adhesive systems with clinical step reduction and direct and indirect bonding. A sample of 72 human premolars were divided into six groups of 12 samples. The first three...

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Autores principales: Iglesias, Angelica, Flores, Teresa, Moyano, Javier, Artés, Montserrat, Gil, Francisco Javier, Puigdollers, Andreu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7321563/
https://www.ncbi.nlm.nih.gov/pubmed/32531966
http://dx.doi.org/10.3390/ma13112644
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author Iglesias, Angelica
Flores, Teresa
Moyano, Javier
Artés, Montserrat
Gil, Francisco Javier
Puigdollers, Andreu
author_facet Iglesias, Angelica
Flores, Teresa
Moyano, Javier
Artés, Montserrat
Gil, Francisco Javier
Puigdollers, Andreu
author_sort Iglesias, Angelica
collection PubMed
description This study aimed to compare the shear bond strength (SBS) and adhesive remaining index (ARI) using one conventional and two novel adhesive systems with clinical step reduction and direct and indirect bonding. A sample of 72 human premolars were divided into six groups of 12 samples. The first three groups (G1, G2, G3) were bonded with a direct technique, while the remaining groups (G4, G5, G6) were bonded by the indirect technique. Groups G1 and G4 used conventional acid-etching primer composite (XT); groups G2 and G5 used self-etching bonding (BO), and groups G3 and G6 had an acid-etching treatment followed by a self-adhesive composite (OC). All groups were exposed to thermocycling. Shear bond strength was analyzed with a universal test machine, and the ARI was examined with 4× magnification. The results showed statistically significant differences between the three adhesive systems. The highest strength values were observed in the XT group G1 (13.54 ± 4 MPa), while the lowest were shown in the BO G2 samples (5.05 ± 2 MPa). There was no significant difference between the direct or indirect bonding techniques on the three compared groups. The type of primer and bonding material significantly influenced the SBS. Values with self-etching bonding were below the minimum recommended for clinical use (5.9–7.8 MPa). There was no difference between indirect and direct bonding techniques. The lowest ARI scores (0–1) were observed in both self-etching and BO groups. Further clinical studies are needed to compare in vivo results.
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spelling pubmed-73215632020-06-29 In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems Iglesias, Angelica Flores, Teresa Moyano, Javier Artés, Montserrat Gil, Francisco Javier Puigdollers, Andreu Materials (Basel) Article This study aimed to compare the shear bond strength (SBS) and adhesive remaining index (ARI) using one conventional and two novel adhesive systems with clinical step reduction and direct and indirect bonding. A sample of 72 human premolars were divided into six groups of 12 samples. The first three groups (G1, G2, G3) were bonded with a direct technique, while the remaining groups (G4, G5, G6) were bonded by the indirect technique. Groups G1 and G4 used conventional acid-etching primer composite (XT); groups G2 and G5 used self-etching bonding (BO), and groups G3 and G6 had an acid-etching treatment followed by a self-adhesive composite (OC). All groups were exposed to thermocycling. Shear bond strength was analyzed with a universal test machine, and the ARI was examined with 4× magnification. The results showed statistically significant differences between the three adhesive systems. The highest strength values were observed in the XT group G1 (13.54 ± 4 MPa), while the lowest were shown in the BO G2 samples (5.05 ± 2 MPa). There was no significant difference between the direct or indirect bonding techniques on the three compared groups. The type of primer and bonding material significantly influenced the SBS. Values with self-etching bonding were below the minimum recommended for clinical use (5.9–7.8 MPa). There was no difference between indirect and direct bonding techniques. The lowest ARI scores (0–1) were observed in both self-etching and BO groups. Further clinical studies are needed to compare in vivo results. MDPI 2020-06-10 /pmc/articles/PMC7321563/ /pubmed/32531966 http://dx.doi.org/10.3390/ma13112644 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Iglesias, Angelica
Flores, Teresa
Moyano, Javier
Artés, Montserrat
Gil, Francisco Javier
Puigdollers, Andreu
In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title_full In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title_fullStr In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title_full_unstemmed In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title_short In Vitro Study of Shear Bond Strength in Direct and Indirect Bonding with Three Types of Adhesive Systems
title_sort in vitro study of shear bond strength in direct and indirect bonding with three types of adhesive systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7321563/
https://www.ncbi.nlm.nih.gov/pubmed/32531966
http://dx.doi.org/10.3390/ma13112644
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