Influence of degradation conditions on dentin bonding durability of three universal adhesives

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• 作者：Keiichi Sai^a ; Yutaka Shimamura^a ; Toshiki Takamizawa^a ; ^{Dr.takamizawa.toshiki@nihon-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Akimasa Tsujimoto^a ; Arisa Imai^a ; Hajime Endo^a ; Wayne W. Barkmeier^b ; Mark A. Latta^b ; Masashi Miyazaki^a
• 关键词：Universal adhesive ; Dentin bonding durability ; Thermal cycling ; Long-term water storage
• 刊名：Journal of Dentistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：54
• 期：Complete
• 页码：56-61
• 全文大小：2265 K

文摘

This study aims to determine dentin bonding durability of universal adhesives using shear bond strength (SBS) tests under various degradation conditions.

Methods

G-Premio Bond (GP, GC), Scotchbond Universal (SU, 3 M ESPE) and All Bond Universal (AB, Bisco) were compared with conventional two-step self-etch adhesive Clearfil SE Bond (SE, Kuraray Noritake Dental). Bonded specimens were divided into three groups of ten, and SBSs with bovine dentin were determined after the following treatments: 1) Storage in distilled water at 37 °C for 24 h followed by 3000, 10,000, 20,000 or 30,000 thermal cycles (TC group), 2) Storage in distilled water at 37 °C for 3 months, 6 months or 1 year (water storage, WS group) and 3) Storage in distilled water at 37 °C for 24 h (control).

Results

SE bonded specimens showed significantly higher SBSs than universal adhesives, regardless of TC or storage periods, although AB specimens showed significantly increased SBSs after 30,000 thermal cycles. In comparisons of universal adhesives under control and degradation conditions, SBS was only reduced in SU after 1 year of WS.

Conclusion

Following exposure of various adhesive systems to degradation conditions of thermal cycling and long term storage, SBS values of adhesive systems varied primarily with degradation period.

Clinical significance

Although universal adhesives have lower SBSs than the two-step self-etch adhesive SE, the present data indicate that the dentin bonding durability of universal adhesives in self-etch mode is sufficient for clinical use.