Journal article
Influence of oxygen inhibition on the surface free-energy and dentin bond strength of self-etch adhesives
European journal of oral sciences, Vol.119(5), pp.395-400
Accepted for publication June 2011
10/2011
DOI: 10.1111/j.1600-0722.2011.00849.x
PMID: 21896057
Abstract
We compared the surface free-energies and dentin bond strengths of single-step self-etch adhesives with and without an oxygen-inhibited layer. The labial dentin surfaces of bovine mandibular incisors were wet ground with #600-grit silicon carbide paper. The adhesives were applied to the ground dentin, light-irradiated, and the oxygen-inhibited layer was either retained or removed with ethanol. The surface free-energies were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The dentin bond strengths of specimens with and without the oxygen-inhibited layer were measured. For all surfaces, the value of the estimated surface tension component was relatively constant at 35.5-39.8 mJ m(-2) . The value of the , Lewis acid component increased slightly when the oxygen-inhibited layer was removed, whereas that of the , Lewis base component decreased significantly. The bond strengths of the self-etch adhesives were significantly lower in specimens without an oxygen-inhibited layer (13.2-13.6 MPa) than in those with an oxygen-inhibited layer (17.5-18.4 MPa). These results indicate that the presence of an oxygen-inhibited layer in single-step self-etch adhesives with advanced photoinitiators promotes higher dentin bond strength.
Details
- Title: Subtitle
- Influence of oxygen inhibition on the surface free-energy and dentin bond strength of self-etch adhesives
- Creators
- Kensaku Koga - Nihon UniversityAkimasa Tsujimoto - Nihon UniversityRyo Ishii - Nihon UniversityMasayoshi Iino - Nihon UniversityMayumi Kotaku - Nihon UniversityToshiki Takamizawa - Nihon UniversityKeishi Tsubota - Nihon UniversityMasashi Miyazaki - Nihon University
- Resource Type
- Journal article
- Publication Details
- European journal of oral sciences, Vol.119(5), pp.395-400
- Edition
- Accepted for publication June 2011
- Publisher
- Blackwell Publishing Ltd
- DOI
- 10.1111/j.1600-0722.2011.00849.x
- PMID
- 21896057
- ISSN
- 0909-8836
- eISSN
- 1600-0722
- Number of pages
- 6
- Language
- English
- Date published
- 10/2011
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984177255902771
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