Shear bond strength of a titanium reinforced core material after using multistep and single-step bonding agents.
BACKGROUND
Recently introduced single-step bonding agents reduce the number of steps involved in the bonding process. Nevertheless, there are few studies on the bond strengths obtained with these new systems.


OBJECTIVE
This in vitro study evaluated the shear bond strength of a titanium-reinforced cores bonded with 5 multistep bonding systems (ScotchBond Multi-Purpose, OptiBond, All Bond-2, Tenure, and ProBond) and 5 single-step bonding systems (Single-Bond, OptiBond Solo, One-Step, Tenure Quik, and Prime & Bond 2.1).


METHODS
The experiment was divided into 10 groups with 10 specimens per group. The shear bond strengths were evaluated after 24 hours on an MTS universal testing machine with a crosshead speed of 6.35 mm/minute.


RESULTS
A 2-way ANOVA showed that All Bond-2 and One-Step recorded the highest means and differed significantly from the Den-Mat systems (Tenure A&B and Tenure Quik), the Kerr systems (OptiBond and Opti-Solo), and the Caulk systems (ProBond and Prime & Bond 2.1). ProBond and Prime & Bond 2.1 bonding systems had the lowest mean and differed from the 3 other brands. Tenure A&B and Tenure Quik bonding systems and OptiBond and Opti-Solo bonding systems did not differ from one another.


CONCLUSIONS
The single-step bonding agents did not produce an improvement in shear bond strengths. The wide range of shear bond strength reported for the single-step systems appeared to indicate that these bonding systems are technique sensitive.
Cohen
B I
BI
Essential Dental Laboratories, S. Hackensack, NJ, USA.
Pagnillo
M K
MK
Musikant
B L
BL
Deutsch
A S
AS
D000704:Analysis of Variance; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D011176:Post and Core Technique; D013718:Tensile Strength; D014025:Titanium
D003738:Dental Cements; D014025:Titanium