نبذة مختصرة : The purpose of the present study was to investigate the effect of an experimental primer containing a microperoxidase (MP‐11) with 2‐hydroxyethyl methacrylate on adhesive bonding of three different luting systems and dentin. The luting systems prepared were three etch‐and‐rinse systems (10‐3/Super‐Bond, 10‐0/Super‐Bond, 65PA/Super‐Bond), a self‐etching system (PanaviaF2.0), and a self‐adhesive system (SA‐Luting). These luting systems were used in conjunction with the MP‐11 primer, and were designated as 10‐3/MP‐11/Super‐Bond, 10‐0/MP‐11/Super‐Bond, 65PA/MP‐11/Super‐Bond, MP‐11/PanaviaF2.0, MP‐11/SA‐Luting, respectively. The dentin surfaces of human premolar teeth were treated, and then bonded with acrylic rods. Shear bond strengths were determined after 24 h of storage in water. The maximum mean bond strength was obtained with 10‐0/MP‐11/Super‐Bond (48.7 ± 6.6 MPa), followed by 10‐3/MP‐11/Super‐Bond (36.3 ± 10.2 MPa), 65PA/MP‐11/Super‐Bond (32.9 ± 9.2 MPa), 10‐3/Super‐Bond (26.6 ± 6.7 MPa), MP‐11/PanaviaF2.0 (21.4 ± 5.6 MPa), MP‐11/SA‐Luting (17.2 ± 3.5 MPa), PanaviaF2.0 (16.9 ± 5.7 MPa), 65PA/Super‐Bond (12.8 ± 2.0 MPa), SA‐Luting (11.2 ± 5.4 MPa), and 10‐0/Super‐Bond (9.6 ± 3.9 MPa). The additional use of MP‐11 primer significantly improved the bond strengths in the etch‐and‐rinse systems with 4‐META/MMA‐TBB resin. It is suggested that the peroxidase has a potential to improve dentin adhesion in the etch‐and rinse, self‐etching, and self‐adhesive systems.
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