Influence of water storage on fatigue strength of self-etch adhesives

Toshiki Takamizawa; Wayne W Barkmeier; Akimasa Tsujimoto; Donal D Scheidel; Hidehiko Watanabe; Robert L Erickson; Mark A Latta; Masashi Miyazaki

doi:10.1016/j.jdent.2015.10.018

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Influence of water storage on fatigue strength of self-etch adhesives

Journal article

Peer reviewed

Influence of water storage on fatigue strength of self-etch adhesives

Toshiki Takamizawa, Wayne W Barkmeier, Akimasa Tsujimoto, Donal D Scheidel, Hidehiko Watanabe, Robert L Erickson, Mark A Latta and Masashi Miyazaki

Journal of dentistry, Vol.43(12), pp.1416-1427

12/2015

DOI: 10.1016/j.jdent.2015.10.018

PMID: 26520580

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Abstract

The purpose of this study was to determine enamel and dentin bond durability after long-term water storage using self-etch adhesives. Two single step self-etch adhesives (SU, Scotchbond Universal and GB, G-ӕnial Bond) and a two-step self-etch adhesive (OX, OptiBond XTR) were used. The shear bond strength (SBS) and shear fatigue strength (FS) of the enamel and dentin were obtained with and without phosphoric acid pre-etching prior to application of the adhesives. The specimens were stored in distilled water at 37°C for 24h, 6 months, and one year. A staircase method was used to determine the FS using a frequency of 10Hz for 50,000 cycles or until failure occurred. The SBS and FS of enamel bonds were significantly higher with pre-etching, when compared to no pre-etching for the same water storage period. The FS of dentin bonds with pre-etching tended to decrease relative to no pre-etching at the same storage period. For the one year storage period, SU and GB with pre-etching showed significantly lower FS values than the groups without pre-etching. The influence of water storage on FS of the self-etch adhesives was dependent on the adhesive material, storage period and phosphoric acid pre-etching of the bonding site. Phosphoric acid pre-etching of enamel improves the effectiveness of self-etch adhesive systems. Inadvertent contact of phosphoric acid on dentin appears to reduce the ability of self-etch adhesives to effectively bond resin composite materials.

Fatigue strength

Long-term water storage

Phosphoric acid pre-etching

Self-etch adhesive

Details

Title: Subtitle: Influence of water storage on fatigue strength of self-etch adhesives
Creators: Toshiki Takamizawa - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
Wayne W Barkmeier - Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
Akimasa Tsujimoto - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
Donal D Scheidel - Department of Diagnostic Sciences, Creighton University School of Dentistry, USA
Hidehiko Watanabe - Section of Operative Dentistry, University of Nebraska, Lincoln, Nebraska, USA
Robert L Erickson - Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
Mark A Latta - Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
Masashi Miyazaki - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
Resource Type: Journal article
Publication Details: Journal of dentistry, Vol.43(12), pp.1416-1427
DOI: 10.1016/j.jdent.2015.10.018
PMID: 26520580
NLM abbreviation: J Dent
ISSN: 0300-5712
eISSN: 1879-176X
Publisher: Elsevier Ltd
Language: English
Date published: 12/2015
Academic Unit: Operative Dentistry
Record Identifier: 9984176689102771

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