Development of Resin for Crown and Bridge with a Higher Toughness

更高韧性冠桥用树脂的开发

• 批准号: 09470442
• 负责人: NEMOTO Kimiyo
• 金额: $ 7.1万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09470442/
• 关键词: Dimethacylate; Epoxy resin; Toughness; Composite material; Bis-phenol A; Synthesis; Gradient property; エポキシ; 靭性; ウレタンジメタクリレート; 示差熱分析; 前装歯冠硬質レジン

Outline of the study achievements : We tried to develop of the new material comprised of dimethacrylate or epoxy monomer and silica, resists the occulisional force while maintaining aesthetics and an operability as the resin for Crown and Bridge. The characteristic of this study is to develop a material with a higher toughness.Construction of the material with a gradient property : The particle reinforced composite (PRP) resin comprised of the photo-curing dimethacrylate and silica particle, was used for the top surface because the it has an aesthetics and an operability. The fiber reinforced resin (FRP) comprised of the silica fiber and the epoxy resin with toughness was applied for core material.Results :1. The improvement of resin matrix・・・・・・The novel dimethacrylate and epoxy monomers were designed and synthesized. These monomers do not have a bis-phenol A as a main chain in the dimethacrylate and epoxy resin molecule. These polymers had a higher toughness.2. The design of the gradient material in the elastic modulus・・・・・・To make a good adhesion between the PRP and FRP, the photo-polymerization of dimethacrylate monomer and the heat-polymerization of epoxy resin monomer were examined in the presence of both monomers. The process of the polymerization of both two monomers were analyzed by the heat analysis. The epoxy resin was heat-cured at 110-130ﾟC after the dimethacrylate monomer was photo-cured.3. We could develop the crown and bridge resin with a higher toughness.

研究成果概述：我们尝试开发由二甲基丙烯酸酯或环氧单体和二氧化硅组成的新材料，作为冠桥树脂，在保持美学和可操作性的同时抵抗占领力。本研究的特点是开发具有更高韧性的材料。具有梯度性能的材料的构造：由光固化二甲基丙烯酸酯和二氧化硅颗粒组成的颗粒增强复合材料（PRP）树脂用于顶面，因为它具有美观性和可操作性。芯材采用由石英纤维和韧性环氧树脂组成的纤维增强树脂（FRP）。树脂基体的改进······设计合成了新型的二甲基丙烯酸酯和环氧单体。这些单体在二甲基丙烯酸酯和环氧树脂分子中不具有双酚A作为主链。这些聚合物具有较高的韧性.弹性模量梯度材料的设计·····为了使PRP和FRP之间具有良好的粘合性，在两种单体存在下，考察了二甲基丙烯酸酯单体的光聚合和环氧树脂单体的热聚合。通过热分析对两种单体的聚合过程进行了分析。将二甲基丙烯酸酯单体光固化后，在110-130 ℃下对环氧树脂进行热固化。我们可以开发出韧性更高的冠桥树脂。

项目成果

N.Nishiyama, Y.Muramatsu, M.Nomura, K.Nemoto: "Development of Low Viscosity Monomer for Crown and Bridge Resin" The Journal of the Japanese Society for Dental Materials and Devices. 18(3)(Submitting).

N.Nishiyama、Y.Muramatsu、M.Nomura、K.Nemoto：“牙冠和桥梁树脂低粘度单体的开发”日本牙科材料与设备学会杂志。

西山典宏, 村松安盛, 野村充, 根本君也: "硬質レジン用低粘度モノマーの開発" 歯科材料・器械. 18(印刷中). (1999)

Norihiro Nishiyama、Yasumori Muramatsu、Mitsuru Nomura、Kimiya Nemoto：“硬树脂低粘度单体的开发”牙科材料和仪器 18（出版中）。