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作者报道了用美国11种市售可见光引发的复合树脂和8种可见光发射装置(后简称光具)进行聚合的实验研究,并与紫外光固化的复合树脂作比较。在这以前已有几篇关于可见光引发系统的报道。Swartz等发现一些可见光引发的树脂能通过1mm厚的牙釉质而被聚合。Leung等则发现照射时间延长试件的硬度有所增加。所有这些研究除一份临床报告外均在金属或塑料模型上作。作者在440个新拔人牙上制4.5—5mm深的V类洞。用11种充填材料,每种材料填入55个牙洞,各种材料的5个试件用光具照射20秒钟。
The authors report the experimental investigation of the polymerization of 11 commercially available visible light-induced composite resins and eight visible light emitting devices (hereinafter referred to as light fixtures) in the United States and comparison with UV-cured composite resins. There have been several reports on visible light-inducing systems before. Swartz et al. Found that some visible light-induced resins can be polymerized through 1 mm thick enamel. Leung et al. Found that the hardness of the test piece increased with prolonged exposure time. All of these studies are performed on metal or plastic models with the exception of a clinical report. The authors make Class 4.5-5mm deep holes in 440 newly extracted teeth. With 11 kinds of filling materials, each material was filled with 55 tooth holes, and five specimens of various materials were irradiated with light for 20 seconds.