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BioMed Research International
Volume 2017, Article ID 2432536, 7 pages
https://doi.org/10.1155/2017/2432536
Research Article

Effect of Airborne Particle Abrasion on Microtensile Bond Strength of Total-Etch Adhesives to Human Dentin

1Unit of Restorative Dentistry, Endodontics and Oral Pathology, Department of Life, Health and Environmental Sciences, Dental Clinic, University of L’Aquila, L’Aquila, Italy
2Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy

Correspondence should be addressed to Maurizio D’Amario; ti.qavinu@oiramad.oiziruam

Received 10 August 2017; Revised 8 October 2017; Accepted 21 November 2017; Published 17 December 2017

Academic Editor: Salvatore Sauro

Copyright © 2017 Maurizio D’Amario et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aim of this study was to investigate a specific airborne particle abrasion pretreatment on dentin and its effects on microtensile bond strengths of four commercial total-etch adhesives. Midcoronal occlusal dentin of extracted human molars was used. Teeth were randomly assigned to 4 groups according to the adhesive system used: OptiBond FL (FL), OptiBond Solo Plus (SO), Prime & Bond (PB), and Riva Bond LC (RB). Specimens from each group were further divided into two subgroups: control specimens were treated with adhesive procedures; abraded specimens were pretreated with airborne particle abrasion using 50 μm Al2O3 before adhesion. After bonding procedures, composite crowns were incrementally built up. Specimens were sectioned perpendicular to adhesive interface to produce multiple beams, which were tested under tension until failure. Data were statistically analysed. Failure mode analysis was performed. Overall comparison showed significant increase in bond strength () between abraded and no-abraded specimens, independently of brand. Intrabrand comparison showed statistical increase when abraded specimens were tested compared to no-abraded ones, with the exception of PB that did not show such difference. Distribution of failure mode was relatively uniform among all subgroups. Surface treatment by airborne particle abrasion with Al2O3 particles can increase the bond strength of total-etch adhesives.