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首页> 美国卫生研究院文献>Acta Biomaterialia Odontologica Scandinavica >Visible light cure characteristics of a cycloaliphatic polyester dimethacrylate alternative oligomer to bisGMA
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Visible light cure characteristics of a cycloaliphatic polyester dimethacrylate alternative oligomer to bisGMA

机译：bisGMA的脂环族聚酯二甲基丙烯酸酯替代低聚物的可见光固化特性

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Objective: The goal of this study was to characterize the light curing characteristics of a new oligomer PEM-665 designed to be used as an alternative monomer to BisGMA. Materials and methods: PEM-665 (P) and BisGMA (B) solutions were prepared with triethylene glycol dimethacrylate (T) diluent in different weight proportions (70/30 and 50/50). Solutions containing 70% P and 30% T were designated as 70PT, 70%B and 30%T as 70BT, 50%P and 50%T as 50PT and 50%B and 50%T as 50BT. The initiators were CQ (EDMAB was used as amine accelerator for CQ) and DPO in 1% concentration. Eight solutions were prepared in a factorial design: 70PT/DPO; 70PT/CQ; 50PT/DPO; 50PT/CQ; 70BT/DPO; 70BT/CQ; 50BT/DPO; 50BT/CQ. BISCO VIP visible light was used to cure the monomer solutions using 30 s exposure time and 400 W power setting. TA Instruments Differential Scanning Calorimeter (DSC 2910) was used to determine the heat of cure (J/g) during polymerization at 37 °C, from which molar heat of cure (kJ/mole) and %Conversion values were estimated. Results: Range of mean values as a function monomer selections were: heat of cure (J/g): 161.7 for 70PT/DPO system to 198.6 for 50BT/CQ system; molar heat of cure (kJ/mole): 67.3 for 70BT/DPO to 78.86 for 50PT/CQ; % conversion: 59.9 for 70BT/DPO to 70.3 for 50PT/CQ. Analysis of variance and Tukey HSD pairwise contrast showed statistically significant differences between % conversion means of PEM and BisGMA mixtures, with PEM mixtures showing significantly higher mean values. Conclusions: The results suggest that PEM-665 is a promising candidate material for dental polymer applications.
机译：目的：本研究的目的是表征新型低聚物PEM-665的光固化特性，该低聚物旨在用作BisGMA的替代单体。材料和方法：用不同重量比（70/30和50/50）的三乙二醇二甲基丙烯酸酯（T）稀释剂制备PEM-665（P）和BisGMA（B）溶液。将包含70％P和30％T的溶液命名为70PT，将70％B和30％T命名为70BT，将50％P和50％T命名为50PT，将50％B和50％T命名为50BT。引发剂为浓度为1％的CQ（EDMAB用作CQ的胺促进剂）和DPO。在析因设计中准备了八种溶液：70PT / DPO； 70PT / CQ; 50PT / DPO; 50PT / CQ; 70BT / DPO； 70BT / CQ； 50BT / DPO； 50BT / CQ。使用BISCO VIP可见光以30 s的曝光时间和400 W的功率设置来固化单体溶液。使用TA Instruments差示扫描量热仪（DSC 2910）确定聚合在37°C期间的固化热（J / g），由此估算固化的摩尔热（kJ / mole）和％转化率值。结果：作为单体选择函数的平均值范围为：固化热（J / g）：70PT / DPO系统为161.7，50BT / CQ系统为198.6；固化摩尔热（kJ / mol）：70BT / DPO为67.3至50PT / CQ为78.86；转化率百分比：70BT / DPO为59.9，50PT / CQ为70.3。方差分析和Tukey HSD成对对比显示，PEM和BisGMA混合物的％转化平均值之间存在统计学上的显着差异，PEM混合物的平均值明显更高。结论：结果表明，PEM-665是用于牙科聚合​​物应用的有前途的候选材料。

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