Lai Guangyun, Zhao Liya, Wang Jun, Kunzelmann Karl-Heinz
Department of Pediatric Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine.
Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology; National Clinical Research Center of Stomatology.
Dent Mater J. 2018 Sep 30;37(5):717-724. doi: 10.4012/dmj.2017-233. Epub 2018 Jul 12.
This study evaluated surface gloss, roughness and color change of six current flowable composites after simulated toothbrushing, including four traditional flowable composites (i.e. GrandioSO Flow, Arabesk Flow, Kerr Revolution Formula 2 and Gradia Direct LoFlo), one self-adhering flowable composite (Kerr Vertise Flow) and one universal injectable composite (G-ænial Universal Flo). Forty-eight dimensionally standardized specimens (n=8/group) were made from six composites. Before and after 1 h toothbrushing simulation, surface gloss was measured with a glossmeter, and surface roughness was evaluated with a profilometer, and color was measured with a spectrophotometer. In this study, G-ænial Universal Flo, termed as universal injectable composite by the manufacturer, presented excellent surface properties after toothbrush abrasion; Gradia Direct LoFlo showed excellent color stablity after toothbrush abrasion; color alteration of composites caused by toothbrush abrasion was acceptable on the premise that 3.3∆E units were considered as acceptable threshold values.
本研究评估了六种市售可流动复合树脂在模拟刷牙后的表面光泽度、粗糙度和颜色变化，其中包括四种传统可流动复合树脂（即GrandioSO Flow、Arabesk Flow、Kerr Revolution Formula 2和Gradia Direct LoFlo）、一种自粘结可流动复合树脂（Kerr Vertise Flow）和一种通用注射用复合树脂（G-ænial Universal Flo）。用六种复合树脂制作了48个尺寸标准化的样本（每组n = 8）。在模拟刷牙1小时前后，用光泽仪测量表面光泽度，用轮廓仪评估表面粗糙度，并用分光光度计测量颜色。在本研究中，制造商称为通用注射用复合树脂的G-ænial Universal Flo在牙刷磨损后表现出优异的表面性能；Gradia Direct LoFlo在牙刷磨损后表现出优异的颜色稳定性；在将3.3∆E单位视为可接受阈值的前提下，牙刷磨损引起的复合树脂颜色变化是可接受的。
