Microperoxidase primer promotes adhesion of butylborane-polymerized resin to dentin

✍ Scribed by Yohsuke Taira; Kohyoh Soeno; Mitsuru Atsuta

• Book ID: 102296746
• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 187 KB
• Volume: 81B
• Category: Article
• ISSN: 1552-4973
• DOI: 10.1002/jbm.b.30643

✦ Synopsis

Abstract

The purpose of this study was to investigate the effect of dentin primers containing microperoxidase (MP‐11) with 2‐hydroxyethyl methacrylate (HEMA) on the bond strength between a tri‐n‐butylborane‐initiated self‐polymerizing resin and dentin. Bovine dentin surfaces were etched with 10 wt % phosphoric acid, primed, and then bonded with stainless steel rods. Tensile bond strength after 24 h of storage in water was significantly influenced by both MP‐11 and HEMA. Groups with no MP‐11 showed the lowest values. Without HEMA, the bond strengths of groups using 0.01, 0.1, and 1.0 μmol/g MP‐11 were statistically identical, and also greater than that of the no MP‐11 control. In the presence of HEMA, the bond strength was significantly enhanced with an increasing concentration of MP‐11. The highest bond strength of 29.0 MPa was obtained with aqueous HEMA primer, containing 1.0 μmol/g MP‐11. Microscopic observation showed the formation of a hybrid layer at the bonded interface. Polymerization of the resin was significantly accelerated with the MP‐11 primer. In conclusion, MP‐11 has a potential for adhesive bonding promoter between the resin and the demineralized dentin surface. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006