Publications by authors named "Zhewen Zhu"

Purpose: Restoring the esthetics of anterior teeth with implants is challenging. This study aimed to evaluate the esthetic outcome of interproximal papilla between implant-restored unilateral and bilateral maxillary central incisors.

Materials And Methods: A total of 56 adults with implant restorations in the maxillary central incisors were enrolled, including 40 cases of unilateral incisors and 16 cases of bilateral incisors.

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A high hydroxyl content waterborne polyester-acrylate emulsion was successfully synthesized in two steps. Firstly, the carboxyl terminated unsaturated polyester was synthesized, then it was reacted as a monomer with acrylate monomer by emulsion polymerization using the semi-continuous seeded method. The effects of the amount of hydroxyethyl methacrylate (HEMA), the ratio of polyester/acrylic, the ratio of soft/hard monomer, and the content of chain transfer agent to the properties of the composite emulsion were investigated.

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High solid content waterborne polyurethane-acrylate (WPUA) emulsions have been successfully synthesized in two steps. Firstly, we prepared a waterborne polyurethane emulsion, then reacted it with acrylate monomer by emulsion polymerization using the semi-continuous seeded method. The effects of the type and amount of emulsifier, the amount of dimethylolpropionic acid (DMPA), the choice of capping group, the ratio of PU/PA, and the method of adding a water-soluble monomer to the properties of the composite emulsion were investigated.

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