Effect of oxygen inhibition in two-step self-etch systems on surface free energy and dentin bond strength with a chemically cured resin composite

Ayumi Yamaji; Akimasa Tsujimoto; Tetsui Asaoka; Saki Matsuyoshi; Kenji Tsuchiya; Toshiki Takamizawa; Masashi Miyazaki

doi:10.2334/josnusd.56.201

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Effect of oxygen inhibition in two-step self-etch systems on surface free energy and dentin bond strength with a chemically cured resin composite

Journal article

Open access

Peer reviewed

Effect of oxygen inhibition in two-step self-etch systems on surface free energy and dentin bond strength with a chemically cured resin composite

Ayumi Yamaji, Akimasa Tsujimoto, Tetsui Asaoka, Saki Matsuyoshi, Kenji Tsuchiya, Toshiki Takamizawa and Masashi Miyazaki

Journal of oral science, Vol.56(3), pp.201-207

09/2014

DOI: 10.2334/josnusd.56.201

PMID: 25231146

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https://doi.org/10.2334/josnusd.56.201View

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Abstract

We compared the surface free energies and dentin bond strengths of two-step self-etch systems with and without an oxygen-inhibited layer. The adhesives were applied to self-etching primer-treated dentin surfaces of bovine incisors, after which the teeth were light-irradiated and the oxygen-inhibited layer was left intact or removed with ethanol. We determined surface free energies (γS) and their components by measuring the contact angles of three test liquids placed on the cured adhesives. We also measured the dentin bond strengths of chemically cured resin composite to the adhesives, with and without the oxygen-inhibited layer. For all surfaces, the estimated surface tension component, γS(LW), was relatively constant. The Lewis base (γS(-)) component decreased significantly when the oxygen-inhibited layer was removed, whereas the Lewis acid (γS(+)) component slightly increased. The dentin bond strengths of the two-step self-etch systems did not significantly differ in relation to the presence of the oxygen-inhibited layer. Although the surface free energy of the adhesive was affected by the presence of the oxygen-inhibited layer, no changes in dentin bond strength were detected.

Animals

Cattle

Composite Resins

Dental Etching

Dentin

Microscopy, Electron, Scanning

Oxygen - metabolism

Details

Title: Subtitle: Effect of oxygen inhibition in two-step self-etch systems on surface free energy and dentin bond strength with a chemically cured resin composite
Creators: Ayumi Yamaji - Nihon University
Akimasa Tsujimoto - Nihon University
Tetsui Asaoka - Nihon University
Saki Matsuyoshi - Nihon University
Kenji Tsuchiya - Nihon University
Toshiki Takamizawa - Nihon University
Masashi Miyazaki - Nihon University
Resource Type: Journal article
Publication Details: Journal of oral science, Vol.56(3), pp.201-207
DOI: 10.2334/josnusd.56.201
PMID: 25231146
ISSN: 1343-4934
eISSN: 1880-4926
Language: English
Date published: 09/2014
Academic Unit: Operative Dentistry
Record Identifier: 9984177253302771

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