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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Effects of water and carboxylic acid monomer on polymerization of HEMA in the presence of N-phenylglycine.

OBJECTIVES. This research was designed to study the effect of water or carboxylic acid monomer on the polymerization of 2-hydroxyethyl methacrylate (HEMA) in order to understand the bonding mechanism of dentin bonding systems using N-phenylglycine (NPG). METHODS. The polymerization of HEMA in the presence of NPG was studied by adding various amounts of water and/or 4-(2-methacryloyloxyethoxycarbonyl) phthalic acid (4-MET) and evaluated using differential scanning calorimetry (DSC). RESULTS: The addition of water promoted the polymerization of HEMA. Polymerization was further promoted through the addition of 4-MET as a carboxylic acid monomer. Polymerization was promoted at the molar ratio of 4-MET to NPG of 1.0-7. 0. SIGNIFICANCE. Moisture on the dentin surface could contribute to improving bond strength in dentin bonding systems using NPG by promoting polymerization at the dentin interface.[1]


  1. Effects of water and carboxylic acid monomer on polymerization of HEMA in the presence of N-phenylglycine. Imai, Y., Suzuki, A. Dental materials : official publication of the Academy of Dental Materials. (1994) [Pubmed]
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