OBJECTIVE The aim of our study is to develop amine-free photoinitiating systems (PISs) for the polymerization of representative dental methacrylate resins under blue light irradiation. PISs based on camphorquinone (CQ)/sulfinate and CQ/sulfonate, eventually in combination with an iodonium salt, are proposed and compared to the well-established CQ/amine system. The polymerization performances of thick (1.4 mm) samples of different methacrylate blends upon exposure to a commercial blue LED centered at 477 nm under air are described. Finally, the performances of the new developed PISs are evaluated for dental composites application. METHODS FTIR is used to monitor the photopolymerization profiles. ESR spectroscopy and electrochemical experiments are used to identify the radicals generated. Mechanical properties measurements and color stability measurements are carried out to determine the key properties of the dental composites prepared. RESULTS AND SIGNIFICIANCE The performances of the new proposed PISs for the photopolymerization of thick (1.4 mm) samples of methacrylate upon exposure to a blue dental LED under air are excellent. Similar or better performances and bleaching properties are obtained with the new proposed amine-free systems compared to those reached with the CQ/amine reference system. Dental composites with excellent mechanical properties and exceptional color stability are obtained. The involved chemical mechanisms for the initiation step were also established.

中文翻译：

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亚磺酸盐和磺酸盐作为基于CQ的系统中的高性能共引发剂：面向牙科修复材料的无芳族胺系统。

目的我们的研究目的是开发无胺光引发体系（PIS），用于在蓝光照射下聚合代表性的牙科用甲基丙烯酸酯树脂。提出了基于樟脑醌（CQ）/亚磺酸盐和CQ /磺酸盐的PIS，最终与碘鎓盐组合，并将其与完善的CQ /胺系统进行了比较。描述了在空气中暴露于以477 nm为中心的商用蓝色LED时，不同甲基丙烯酸酯共混物的厚样品（1.4 mm）的聚合性能。最后，对牙科复合材料应用中新开发的PIS的性能进行了评估。方法FTIR用于监测光聚合曲线。ESR光谱学和电化学实验可用于识别产生的自由基。进行机械性能测量和颜色稳定性测量以确定所制备的牙科复合材料的关键性能。结果与意义新提议的PIS在空气中暴露于蓝色牙科LED时，用于厚（1.4毫米）厚的甲基丙烯酸酯样品的光聚合的性能非常好。与新提出的无胺体系相比，与CQ /胺参考体系所获得的性能和漂白性能相似或更好。获得具有优异的机械性能和优异的颜色稳定性的牙科复合材料。还建立了引发步骤所涉及的化学机理。结果与意义新提议的PIS在空气中暴露于蓝色牙科LED时，用于厚（1.4毫米）厚的甲基丙烯酸酯样品的光聚合的性能非常好。与新提出的无胺体系相比，与CQ /胺参考体系所获得的性能和漂白性能相似或更好。获得具有优异的机械性能和优异的颜色稳定性的牙科复合材料。还建立了引发步骤所涉及的化学机理。结果与意义新提议的PIS在空气中暴露于蓝色牙科LED时，用于厚（1.4毫米）厚的甲基丙烯酸酯样品的光聚合的性能非常好。与新提出的无胺体系相比，与CQ /胺参考体系所获得的性能和漂白性能相似或更好。获得具有优异的机械性能和优异的颜色稳定性的牙科复合材料。还建立了引发步骤所涉及的化学机理。获得具有优异的机械性能和优异的颜色稳定性的牙科复合材料。还建立了引发步骤所涉及的化学机理。获得具有优异的机械性能和优异的颜色稳定性的牙科复合材料。还建立了引发步骤所涉及的化学机理。