title: Efficacy of self-etching primers containing carboxylic acid monomers on the adhesion between composite resin and dentin.
abstract: A study was conducted to examine the efficacy of carboxylic acid monomers as self-etching primers by measuring the tensile bond strengths between composite resin and dentin. Several kinds of carboxylic acid monomers, such as o-(N-methacryloyl amino)benzoic acid (o-MABA), m-(N-methacryloyl amino)benzoic acid (m-MABA), p-(N-methacryloyl amino)benzoic acid (p-MABA), 4-methacryloxy phthalic acid (4-MPA), 2-(N-methacryloyl amino) terephthalic acid (2-MATPA), and 5-(N-methacryloyl) amino)isophthalic acid (5-MAIPA), were prepared. 4-methacryloxyethyl trimellitic anhydride (4-META) was also used as a component of the self-etching primer. The DMSO solutions of these monomers were used as self-etching primers. The tensile bond strengths between composite resin and dentin were measured after 24 h immersion in water at 37 degrees C. When DMSO was used as a self-etching primer, the bond strengths were below 5 MPa. Among the monocarboxylic acid monomers, m-MABA gave the highest mean bond strength at 60 s application, and 5MAIPA gave the highest mean bond strength at 30 s application among the dicarboxylic acid monomers, although the differences among the values were not always significant. The smear layer was partially dissolved by treatment with the self-etching primer.
authors.affiliation: Department of Dental Materials, Nihon University School of Dentistry, Chiba, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hayakawa
authors.forename: K
authors.initials: K
authors.lastname: Kikutake
authors.forename: K
authors.initials: K
authors.lastname: Nemoto
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D002264:Carboxylic Acids / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003804:Dentin; D003806:Dentin Permeability; D004121:Dimethyl Sulfoxide; D008422:Materials Testing; D008689:Methacrylates; D019279:Resin Cements / Q000737:chemistry*; D012995:Solubility; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: D002264:Carboxylic Acids; D003188:Composite Resins; D008689:Methacrylates; D019279:Resin Cements; C034139:4-methacryloxyethyltrimellitic acid anhydride; D004121:Dimethyl Sulfoxide