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New concept of resin‐dentin interfacial adhesion: The nanointeraction zone
Author(s) -
Koshiro Kenichi,
Sidhu Sharanbir K.,
Inoue Satoshi,
Ikeda Takatsumi,
Sano Hidehiko
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30450
Subject(s) - adhesive , dentin , materials science , adhesion , composite material , single bond , etching (microfabrication) , one step , bond strength , layer (electronics) , chemistry , chemical engineering , organic chemistry , group (periodic table) , engineering
The purpose of this study was to evaluate the morphological appearance of resin‐dentin interface produced by 1‐step adhesive systems in order to classify them, using TEM. It was hypothesized that all interfaces produced by each 1‐step adhesive show characteristics similar to that produced by the conventional self‐etching system rather than that produced by etch‐and‐rinse system. The flattened dentin surfaces were subjected to bonding treatment using either a 2‐step adhesive: single bond, mega bond, unifil bond; or a 1‐step adhesive: Prompt L‐Pop, absolute, xeno CF, AQ bond, one‐up bond F, G bond, and SSB‐200. A flowable resin was then applied to these surfaces. The results revealed that resin‐dentin interfaces produced by 1‐step systems were classified into three categories. Additionally, the interface produced by G bond and SSB‐200 showed a different morphological appearance from that of the others. The interface produced by these adhesives was thinner and less demineralized, with the presence of hydroxyapatite‐coated collagen fibrils . It is proposed that “Nanointeraction Zone (NIZ)” is a new complementary classification for partially demineralized resin‐dentin interdiffusion zones. Thus, one‐step self‐etching adhesive systems can be classified into three categories, etch‐and‐rinse type, mild self‐etching type, and NIZ type, by their morphological appearance of the interface. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006