Back to the multi-step adhesive system: A next-generation two-step system with hydrophobic bonding agent improves bonding effectiveness

Azusa YAMANAKA; Atsushi MINE; Mariko MATSUMOTO; Ryosuke HAGINO; Masahiro YUMITATE; Shintaro BAN; Masaya ISHIDA; Jiro MIURA; Bart VAN MEERBEEK; Hirofumi YATANI

doi:10.4012/dmj.2020-272

This article has now been updated. Please use the final version.

Back to the multi-step adhesive system: A next-generation two-step system with hydrophobic bonding agent improves bonding effectiveness

Azusa YAMANAKA, Atsushi MINE, Mariko MATSUMOTO, Ryosuke HAGINO, Masahiro YUMITATE, Shintaro BAN, Masaya ISHIDA, Jiro MIURA, Bart VAN MEERBEEK, Hirofumi YATANI

Author information

Azusa YAMANAKA
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Atsushi MINE
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Mariko MATSUMOTO
Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine
KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry
Ryosuke HAGINO
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Masahiro YUMITATE
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Shintaro BAN
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Masaya ISHIDA
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
Jiro MIURA
Division for Interdisciplinary Dentistry, Osaka University Dental Hospital
Bart VAN MEERBEEK
KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry
Hirofumi YATANI
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

Keywords: Dental bonding, Dentin-bonding agents, Microscopy, Electron, Scanning, Hydroxyethyl methacrylate, Hydrophobic and hydrophilic interactions

JOURNAL FREE ACCESS Advance online publication

Article ID: 2020-272

DOI https://doi.org/10.4012/dmj.2020-272

The final version of this article is now available: Vol. 40 (2021), No. 4 pp. 928-933

Details

Abstract

This study evaluated the bonding effectiveness of a newly developed two-step hydrophobic bonding material. Three groups using different bonding systems were compared: BZF group, using the new bonding system (BZF-29; GC, Tokyo, Japan); GPB group, using a one-step bonding system (G-Premio Bond; GC); and SE2 group, using a two-step bonding system (CLEARFIL SE Bond 2; Kuraray Noritake Dental, Tokyo, Japan). Microtensile bond strength (µTBS) was measured after storage in water for 24 h, 3 months and 6

months (n=25/group). Fracture surfaces were observed under scanning electron microscopy. The BZF group showed significantly higher µTBS than the other groups (p<0.001). Dominant failure patterns were cohesive failure for the BZF group (48–84%), mixed failure for the SE2 group (48–60%) and interface failure between adhesive and resin composite for the GPB group (48–52%). The hydrophobicity of the BZF-29 bonding system improves the long-term bonding effectiveness between adhesive and resin composite.

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