三种光固化灯对复合树脂固化效果的比较  

Comparison of the cure depth of composite resin by three kinds of curing lights

作　　者：莫珩[1] 高承志[1] 

机构地区：[1]北京大学人民医院口腔科,北京市100044

出　　处：《中国组织工程研究与临床康复》2007年第18期3587-3589,共3页Journal of Clinical Rehabilitative Tissue Engineering Research

摘　　要：目的:比较新型光固化灯(发光二极管灯、等离子弧光灯)与传统卤素灯对光固化复合树脂固化深度的影响。方法:实验于2006-06/12在北京大学人民医院中心实验室完成。实验材料:RestorativeZ100光固化复合树脂,属混合填料型,颜色选A2。测量仪器:DNX-TW-518型等离子弧光灯(输出功率11kW/m2,波长380～540nm)、StarlightS型发光二极管灯(输出功率8kW/m2,波长440～480nm)、TransluxCL型卤素灯(输出功率5kW/m2,波长400～510nm)。固化深度试件:用聚四氟乙烯制备直径4mm,高8mm两端开放的圆柱体模具,各有15个试件。试验根据标准技术ISO4049:2000进行。采用整体固化方式分别垂直照射每个试件,光导棒接触聚酯薄膜,卤素灯照射时间为40s,发光二极管灯照射时间为10,20s,等离子弧光灯照射时间为3,5,10s。试件只照射正面,取出试件,用手术刀片刮除照射部位背面未固化的材料,直至刮不动为止(和刮表面的感觉相同)。用600#砂纸打磨样品,使表面平整。测量剩余试件的厚度(精确到0.02mm),即光固化深度。结果:①发光二极管灯组照射10s的固化深度低于卤素灯组照射40s[分别为(2.285±0.149),(3.760±0.087)mm],差异有显著性意义(t=19.18,P<0.05),发光二极管灯组照射20s的固化深度与卤素灯组照射40s差异无显著性意义(P>0.05)。②等离子弧光灯组照射3,5s的固化深度均低于卤素灯组照射40s[分别为(1.984±0.248),(2.575±0.129),(3.760±0.087)mm],等离子弧光灯组照射10s的固化深度高于卤素灯照射40s[分别为(4.387±0.145),(3.760±0.087)mm],差异均有显著性意义(t=17.20,11.48,6.07,P<0.05)。结论:在相同条件下,不同光固化灯照射光敏复合树脂的固化深度不同,两种新型光固化灯与传统卤素灯相比具有照射时间短,固化深度大的优点。AIM： To discuss the cure depth of light curing composite resin Z100 cured by new curing lights [Starlight S light-emitting diode （LED） curing light, DNX-TW-518 plasma arc curing light] and traditional halogen curing light. METHODS： The study was conducted in the Central Laboratory of People＇s Hospital, Peking University from June to December in 2006. Material： Restorative light curing composite resin Z100, mixing filling type, A2. color. Measuring instruments： DNX-TW-518 plasma arc curing light （output power 11 kW/m^2, wavelength 380-540 nm）, Stadight S LED curing light （output power 8 kW/m^2, wavelength 440-480 nm） and Translux CL traditional halogen curing light （output power 5 kW/m^2, wavelength 400-510 nm）. Moulds of curing depth： 15 cylinder moulds made of polyterafiuoroethylene with diameter of 4 mm and height of 8 mm, which were open in both ends for each kind. The study was conducted according to ISO 4049：2000 standards. Each mould was lured vertically, wholly and individually, with the light rob contacting with the polyester film. The lighting time of halogen curing light was 40 seconds. The lighting time of LED curing light was 10, 20 s respectively. The lighting time of plasma arc curing light was 3, 5, 10 s respectively. Only the positive side of mould was lighted. The reverse side of the mould was scraped with operating blade until the sense of hardness was the same as that of the positive side. The moulds were polished with 600# sandpaper. The thickness of remained mould was taken as curing depth （minimize to 0.02 mm）. RESULTS： （1）The average cure depth of Zl00 composite resin cured by halogen curing light for 40 s was higher than that cured by LED curing light for 10 seconds [（2.285±0.149）, （3.760±0.087） mm]. There were statistical significances between the two kinds of curing lights （t =19.18, P 〈 0.05）. There was no statistical significance compared with that cured by LED curing light for 20 seconds （P 〉 0.05）.（1）Compared with that

关 键 词：复合树脂 光固化灯 固化深度 生物材料 

分 类 号：R318.08[医药卫生—生物医学工程]