Influence of photoirradiation conditions on dentin bond durability and interfacial characteristics of universal adhesives

Kazutaka Hirai, Akimasa Tsujimoto, Kie Nojiri, Hirofumi Ueta, Toshiki Takamizawa, Wayne W. Barkmeier, Mark A. Latta, Masashi Miyazaki

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The influence of photoirradiation conditions on dentin bond durability and interfacial characteristics of universal adhesives was investigated. Universal adhesives were applied to the dentin surfaces and photoirradiated with 100 mW/cm2 for 40 s, 200 mW/cm2 for 20 s, and 400mW/cm2 for 10 s. A resin composite was bonded to dentin to determine shear bond strength after 24 h water storage and 30,000 thermal cycles, and water contact angle of cured adhesive were measured by the sessile drop method. Greater dentin bond strengths after 24 h water storage and 30,000 thermal cycles were achieved under these conditions at light intensity exceeding 200 mW/cm2. Universal adhesives photoirradiated above 200 mW/cm2 exhibited significantly higher water contact angles than those at 100 mW/cm2. The results of this study suggested that the photoirradiation conditions affect the dentin bond durability and interfacial characteristics of universal adhesives even at the same total energy.

Original languageEnglish (US)
Article numberJST.JSTAGE/dmj/2016-019
Pages (from-to)747-754
Number of pages8
JournalDental Materials Journal
Volume36
Issue number6
DOIs
StatePublished - Jan 1 2017

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Dentistry(all)

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