Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

Koji Oyama; Akimasa Tsujimoto; Eiichiro Otsuka; Yusuke Shimizu; Koji Shiratsuchi; Keishi Tsubota; Toshiki Takamizawa; Masashi Miyazaki

doi:10.4012/dmj.2011-162

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Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

Journal article

Open access

Peer reviewed

Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

Koji Oyama, Akimasa Tsujimoto, Eiichiro Otsuka, Yusuke Shimizu, Koji Shiratsuchi, Keishi Tsubota, Toshiki Takamizawa and Masashi Miyazaki

Dental materials journal, Vol.31(1), pp.26-31

02/03/2012

DOI: 10.4012/dmj.2011-162

PMID: 22277602

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Abstract

We compared the surface free energies and enamel bond strengths of single-step self-etch adhesives with and without an oxygen-inhibited layer. The adhesives were applied to the enamel surfaces of bovine incisors, light irradiated, and the oxygen-inhibited layer was either retained or removed with ethanol. The surface free energies and their components (γ(S)(LW), γ(S)(+), and γ(S)(-)) were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The enamel bond strengths of specimens with and without the oxygen-inhibited layer were measured. For all surfaces, the value of the estimated surface tension component γ(S)(LW) was relatively constant. The value of the γ(S)(+) component increased slightly when the oxygen-inhibited layer was removed, whereas that of the γ(S)(-) component decreased significantly. The enamel bond strengths of the self-etch adhesives were significantly lower in the specimens without an oxygen-inhibited layer. The oxygen-inhibited layer therefore appeared to promote higher enamel bond strength.

Materials Testing

Animals

Bisphenol A-Glycidyl Methacrylate - chemistry

Cattle

Dental Bonding - methods

Dental Cements - chemistry

Dental Enamel - ultrastructure

Ethanol - chemistry

Ethylene Glycol - chemistry

Methacrylates - chemistry

Naphthalenes - chemistry

Oxygen - chemistry

Polyethylene Glycols - chemistry

Polymethacrylic Acids - chemistry

Resin Cements - chemistry

Shear Strength

Solvents - chemistry

Stress, Mechanical

Surface Properties

Surface Tension

Water - chemistry

Wettability

Details

Title: Subtitle: Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives
Creators: Koji Oyama - Nihon University
Akimasa Tsujimoto - Nihon University
Eiichiro Otsuka - Nihon University
Yusuke Shimizu - Nihon University
Koji Shiratsuchi - Nihon University
Keishi Tsubota - Nihon University
Toshiki Takamizawa - Nihon University
Masashi Miyazaki - Nihon University
Resource Type: Journal article
Publication Details: Dental materials journal, Vol.31(1), pp.26-31
DOI: 10.4012/dmj.2011-162
PMID: 22277602
NLM abbreviation: Dent Mater J
ISSN: 0287-4547
eISSN: 1881-1361
Publisher: Japanese Soc Dental Materials Devices
Language: English
Date published: 02/03/2012
Academic Unit: Operative Dentistry
Record Identifier: 9984177005902771

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