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Nanomechanical properties of biochemically modified dentin bonded interfaces
Author(s) -
Dos SANTOS P. H.,
KAROL S.,
BEDRANRUSSO A. K. B.
Publication year - 2011
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2010.02175.x
Subject(s) - dentin , adhesive , molar , glutaraldehyde , materials science , composite material , composite number , grape seed extract , distilled water , chemistry , dentistry , layer (electronics) , chromatography , medicine , alternative medicine , pathology
Summary The effect of biomodification of dentin matrices using collagen cross‐linkers, glutaraldehyde (GD) and grape seed extract (GSE), on the reduced modulus of elasticity (Er) and nanohardness (H) of the hybrid layer and underlying dentin was investigated at the dentin–resin bonded interface. The coronal dentin of nine molars were exposed and divided into groups: 5% GD, 6·5% GSE and control. Control samples were etched, bonded with Adper Single Bond Plus and Premise composite. GD and GSE were applied for 1 h prior to bonding procedures. After 24 h, samples were sectioned, and resin‐dentin beams were either kept in distilled water or exposed to collagenase treatment for 24 h. Nano‐indentations were performed at the hybrid layer and underlying dentin. GD and GSE treatment increased the Er and H of resin‐dentin interface structures when compared to the control group ( P < 0·05), particularly the hybrid layer, and may be a promising novel approach to strengthen the dentin–resin bonded interface structures when using these adhesive system and resin‐based composite.