TITLE:
Surface preparation and isotropic shear bond strength properties of superficial bovine dentin
AUTHORS:
Camila Sabatini, Sebastiano Andreana, Zhe Wu
KEYWORDS:
Resin Composite; Dentin Adhesion; Bond Strength; Isotropic; Surface Preparation; Failure Mode
JOURNAL NAME:
Open Journal of Stomatology,
Vol.3 No.4,
July
22,
2013
ABSTRACT: The effect of different types of surface preparation
with SiC abrasive paper on the shear bond strength (SBS) of superficial
bovine dentin obtained from the incisal, middle and cervical thirds were
evaluated. Dentin substrates were obtained with twenty specimens for each
locationgrit combination. Superficial dentin was exposed and prepared to 120-, 320-, or 600-grit SiC; the
dentin surfaces were treated with Optibond Solo Plus (Kerr) and polymerized
for 20 s. The specimens were
placed in a jig, filled with resin composite Z100 (3M-ESPE), polymerized for 40
s according to manufacturer’s
instructions, and stored for 24 h at 37℃ and 100% humidity. After 24 h, SBS was measured using a
loading testing machine (Ul-tradent) and expressed in megapascals. A two-way
ANOVA and Tukey test were used for data analysis. No statistically significant effect of the location (P = 0.254) or interaction
grit-location (P = 0.629) were observed on SBS. Statistically
significant effect of the grit on the SBS was detected (P