Development of the composite resin with less amount of the shrinkage

收缩率较小的复合树脂的开发

• 批准号: 04807139
• 负责人: NEMOTO Kimiya
• 金额: $ 0.96万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04807139/
• 关键词: Composite resin; Shrinkage; Volumetric shrinkage; Linear shrinkage; Curing rate; Filler; Filler content; Shrinkage stress; 収縮; 線収縮率; 硬化速度; 超微粒子シリカ; 重合開始剤; フィラー体積率; 表面形状

In order to obtain information concerning which parameters control the shrinkage of the experimental filled resin during hardening, the volumetric shrinkage and the linear shrinkage of the experimental filled resin were investigated. The correlation between the shrinkage stress and these datas was discussed.The volumetric shrinkage of the filled resin is dependent on the filler content. Contrary, the linear shrinkage is not 1/3 of the volumetric shrinkage even if the filler content was increased. However, when the length become shorter less than 5 mm, the linear shrinkage become larger and it's value become above 3 times, and approximates to 1/3 of the volumetric shrinkage. The magnitude of the linear shrinkage is different by the size and type of the cavity.The shrinkage stress of the filled resin become larger until the filler content is 60 % even if the volumetric shrinkage become smaller. The volumetric shrinkage of the synthesized di-methacrylate monomer which the cyclopolimerization is possible is pretty similar to that of commercial dimethacrylate monomers.Next, the effect of the lining cement on the shrinkage stress of the filled resin was investigated. The shrinkage stress become 1/2 of that obtained without a lining cement. The application of the lining cement, 0.5-1.5mm reduces the shrinkage stress.

为了获得关于哪些参数控制硬化过程中实验填充树脂的收缩的信息，研究了实验填充树脂的体积收缩和线性收缩。讨论了收缩应力与这些数据之间的相关性，填充树脂的体积收缩与填料含量有关。相反，即使增加填料含量，线收缩也不是体积收缩的1/3。当长度小于5 mm时，线收缩率增大，线收缩率增大到体积收缩率的3倍以上，接近体积收缩率的1/3。线收缩的大小因型腔的大小和类型而异，即使体积收缩变小，填充树脂的收缩应力也会变大，直到填料含量为60%。所合成的二甲基丙烯酸酯单体的体积收缩率与市售的二甲基丙烯酸酯单体的体积收缩率相当，可以进行环聚合反应。其次，研究了衬层水泥对填充树脂收缩应力的影响。混凝土衬砌的收缩应力仅为未衬砌时的1/2。采用0.5-1.5mm的衬砌水泥，减小了收缩应力。

项目成果

根本 君也,小松 光一,西山 典宏 堀江 港三,長嶋 正博, 池見 宅司,並木 勇次: "コンポジットレジンの重合収縮 第2報 試験体の長さが線収縮におよぼす影響" 歯科材料・器械. 11. 985-991 (1992)

Kimiya Nemoto、Koichi Komatsu、Norihiro Nishiyama、Kozo Horie、Masahiro Nagashima、Takuji Ikemi、Yuji Namiki：“复合树脂的聚合收缩第 2 部分：测试样本长度对线性收缩的影响”牙科材料和仪器 11 .985-991（ 1992）

池見宅司.他: "コンポジットレジンの重合収縮応力の測定-化学重合と光重合型コンポジットレジンにおける裏層材の影響-" 日本歯科保存学雑誌. 36巻. 800-806 (1993)

Takuji Ikemi 等人：“复合树脂聚合收缩应力的测量 - 背衬材料对化学聚合和光聚合复合树脂的影响”，日本保守牙科杂志，第 36 卷，800-806 (1993)。

神谷直孝 他: "裏層材の収縮応力" 日本歯科保存学雑誌. 36巻. 1641-1648 (1993)

Naotaka Kamiya 等人：“支撑材料的收缩应力”，日本保守牙科杂志，第 36 卷，1641-1648（1993 年）。

Takuji IKEMI: "Measurement of Shrinking Stresses during Composite Resin Hardening -Lining Effects of Chemical and Light Cured Composite Resins-" Japanese Journal of Conservative Dentistry. 800-806 (1993)

Takuji IKEMI：“复合树脂硬化期间收缩应力的测量 - 化学和光固化复合树脂的衬里效应 -” 日本保守牙科杂志。

池見宅司 他: "コンポジットレジンの重合収縮応力の測定-化学重合と光重合型コンポジットレジンにおける裏層材の影響-" 日本歯科保存学雑誌. 36巻. 800-806 (1993)

Takuji Ikemi 等人：“复合树脂聚合收缩应力的测量 - 背衬材料对化学聚合和光聚合复合树脂的影响”，日本保守牙科杂志，第 36 卷，800-806 (1993)。