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首页> 外文期刊>British Biotechnology Journal >Effect of Argon Laser Curing on the ShearBond Strength of Composite Resin RestorativeMaterial
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Effect of Argon Laser Curing on the ShearBond Strength of Composite Resin RestorativeMaterial

机译：氩激光固化对复合树脂修复材料的剪切键强度的影响

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Aim: The aim of this in vitro study was to analyze the shear bond strength of composite resin using two different curing light sources: halogen light (control group) for 20 or 40s, and Argon laser (test group) for 10 or 15s.Study Design: This study was carried in the Department of Dental Biomaterials, Faculty of Dentistry and Ophalmolgy Hospital, Mansura University between January 2011 and August 2012.Methodology: Sixty freshly extracted human molars were prepared to receive composite resin samples in four groups "n=15". The teeth were centrally horizontally mounted in plastic molds with cold cure acrylic resin. Flat occlusal surfaces were prepared and smoothed. One-step self-etching dental adhesive (Xeno?111) was applied to the dentine surface and cured. Composite resin (Spectrum universal composite) was inserted into standardized Perspex mold and polymerized with a halogen light and an argon laser curing units. Specimens were stored in deionized water at 37oC for 48 hours. The specimens were stressed under shear force at a crosshead speed of 0.5 mm/min using Lloyd testing machine. The shear bond strength was calculated to the four groups and statistical analysis performed (One-way ANOVA and LSD tests) at the level of significance at p<0.05. Results: LSD tests indicated that there was significantly higher shear bond strength for the composite cured with argon laser compared with the halogen light curing method. There was no statistical significant difference between curing times of the same light source. Conclusions: The argon laser is a promising source for optimal initiation of polymerization of composite resins. The use of argon laser has been suggested as a new alternative for polymerization of restorative materials. The shear bond strength of composite resin cured with argon laser was superior to that was cured with halogen light even with short curing times.
机译：目的：这项体外研究的目的是使用两种不同的固化光源来分析复合树脂的剪切粘结强度：卤素灯（对照组）持续20或40s，氩激光（测试组）持续10或15s。设计：这项研究是在2011年1月至2012年8月之间在曼苏拉大学牙科与眼科医院牙科生物材料系进行的。方法：准备了60个新鲜提取的人类臼齿，以4组“ n = 15”的方式接收复合树脂样品。 ”。牙齿在中央水平放置在装有冷固化丙烯酸树脂的塑料模具中。制备平坦的咬合面并使其光滑。将一步骤的自蚀刻牙科用胶粘剂（Xeno？111）涂在牙本质表面并固化。将复合树脂（Spectrum通用复合材料）插入标准的有机玻璃模具中，并用卤素灯和氩气激光固化装置进行聚合。将标本在37oC的去离子水中保存48小时。使用劳埃德测试机以0.5 mm / min的十字头速度在剪切力下对样品施加应力。计算四组的剪切粘结强度，并以p <0.05的显着性水平进行统计分析（单向方差分析和LSD测试）。结果：LSD测试表明，与卤素光固化方法相比，氩气激光固化的复合材料的剪切粘结强度明显更高。同一光源的固化时间之间没有统计学上的显着差异。结论：氩激光是最佳引发复合树脂聚合的有前途的光源。有人建议使用氩激光作为修复材料聚合的新选择。即使在较短的固化时间下，用氩激光固化的复合树脂的剪切粘结强度也比用卤素光固化的剪切树脂强。

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