Dorterler Ozgul Carti, Yilmaz Fatma, Tokul Olmez Ozge
Department of Pediatric Dentistry, Faculty of Dentistry, Mugla Sitki Kocman University, Mugla 48000, Turkey.
Department of Restorative Dentistry, Faculty of Dentistry, Mugla Sitki Kocman University, Mugla 48000, Turkey.
Polymers (Basel). 2025 Aug 6;17(15):2155. doi: 10.3390/polym17152155.
This study investigated the effects of color shade and curing time on the degree of conversion (DC) and microhardness of colored compomers. A total of 162 samples (81 for DC, 81 for microhardness) were prepared, with nine samples per color group (gold, blackberry, green, pink, orange, lemon, blue, silver) and for the control. Samples were subdivided into three polymerization subgroups (3 s/3200 mW/cm, 10 s/1000 mW/cm, 20 s/1000 mW/cm). The DC was analyzed via fourier transform infrared spectroscopy (FTIR) and microhardness was measured using Vickers testing. Statistical analysis included two-way ANOVA and Spearman correlation (α = 0.05). The colored compomers demonstrated a significantly lower DC compared to the control group ( ≤ 0.001). Among the tested colors, green exhibited the lowest DC (33.3%), while orange showed the highest (51.0%). A significant difference in DC was observed across curing times ( = 0.005), with the 3 s and 20 s groups exhibiting significantly higher conversion rates than the 10 s group. Microhardness values exhibited significant variation depending on the color ( < 0.001). Gold compomers demonstrated the lowest microhardness, whereas silver compomers showed comparable performance with the control group ( = 0.154). A moderate correlation between DC and microhardness was observed overall (ρ = 0.42, = 0.003). However, the observed relationships were color-dependent: orange displayed a strong positive correlation (ρ = 0.78), whereas pink revealed no meaningful association (ρ = -0.15). Color and curing time critically influence compomer performance. High-intensity short curing is viable for lighter colors, while darker colors require extended curing. Customized protocols are essential to optimize clinical outcomes in pediatric dentistry.
本研究调查了颜色深浅和固化时间对彩色复合树脂的转化率（DC）和显微硬度的影响。共制备了162个样本（81个用于DC，81个用于显微硬度），每个颜色组（金色、黑莓色、绿色、粉色、橙色、柠檬色、蓝色、银色）和对照组各有9个样本。样本被细分为三个聚合亚组（3秒/3200毫瓦/平方厘米、10秒/1000毫瓦/平方厘米、20秒/1000毫瓦/平方厘米）。通过傅里叶变换红外光谱（FTIR）分析DC，并使用维氏测试测量显微硬度。统计分析包括双向方差分析和斯皮尔曼相关性分析（α = 0.05）。与对照组相比，彩色复合树脂的DC显著更低（≤0.001）。在测试的颜色中，绿色的DC最低（33.3%），而橙色最高（51.0%）。在不同固化时间下观察到DC有显著差异（=0.005），3秒和20秒组的转化率显著高于10秒组。显微硬度值因颜色而异（<0.001）。金色复合树脂的显微硬度最低，而银色复合树脂与对照组表现相当（=0.154）。总体上观察到DC和显微硬度之间存在中等相关性（ρ = 0.42，= 0.003）。然而，观察到的关系因颜色而异：橙色显示出强正相关（ρ = 0.78），而粉色没有有意义的关联（ρ = -0.15）。颜色和固化时间对复合树脂性能有至关重要的影响。高强度短时间固化适用于较浅颜色，而较深颜色需要延长固化时间。定制方案对于优化儿童牙科的临床结果至关重要。
