Jassé Fernanda Ferreira, de Campos Edson Alves, Lefever Dorien, Di Bella Enrico, Salomon Jean Pierre, Krejci Ivo, Ardu Stefano
Department of Restorative Dentistry, Araraquara School of Dentistry, UNESP Univ Estadual Paulista, Araraquara, Brazil.
J Dent. 2013 Nov;41 Suppl 5:e41-4. doi: 10.1016/j.jdent.2013.04.011. Epub 2013 May 3.
This study evaluated the gloss behaviour of experimental resin composites loaded with different filler percentages, immediately after polishing and after toothbrushing simulation.
Sixteen disc-shaped specimens were fabricated for each different-charged composite (40%, 50%, 60%, 70% and 75%) and polished with SiC abrasive papers. Gloss measurements were made prior to simulated toothbrushing. The specimens were subjected to the simulation for 5, 15, 30 and 60 min using an electrical toothbrush with a standardized pressure while being immersed in a toothpaste/artificial saliva slurry.
Baseline composite gloss values ranged from 69.7 (40%) to 81.3 (75%) GU (gloss units) and from 18.1 (40%) to 32.3 (75%) GU after 1h of brushing. Highest gloss values were obtained by 75%-charged resin, while the lowest values were obtained by the 40%-charged one.
All tested materials showed a gloss decrease. However, the higher filler load a composite resin has, the higher gloss it can achieve.
Gloss of resin composite materials is an important factor in determining aesthetic success of anterior restorations, and this property may vary according to the filler charge of the restorative material. Higher filler load of a composite resin results in higher gloss values.
本研究评估了不同填料百分比的实验性树脂复合材料在抛光后及模拟刷牙后的光泽行为。
为每种不同填料含量的复合材料（40%、50%、60%、70%和75%）制作16个圆盘形试件，并用碳化硅砂纸进行抛光。在模拟刷牙前进行光泽度测量。使用电动牙刷在标准化压力下，将试件浸入牙膏/人工唾液浆液中分别模拟刷牙5、15、30和60分钟。
复合材料的基线光泽值范围为69.7（40%）至81.3（75%）光泽单位（GU），刷牙1小时后为18.1（40%）至32.3（75%）GU。填料含量为75%的树脂获得的光泽值最高，而填料含量为40%的树脂获得的光泽值最低。
所有测试材料的光泽度均下降。然而，复合树脂的填料含量越高，其所能达到的光泽度越高。
树脂复合材料的光泽度是决定前牙修复美学效果的重要因素，并且该性能可能会因修复材料的填料含量而异。复合树脂的填料含量越高，光泽值越高。
