Marovic Danijela, Par Matej, Macan Matea, Klarić Nikolina, Plazonić Iva, Tarle Zrinka
Department of Endodontics and Restorative Dental Medicine, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia.
Private Dental Practice, 10000 Zagreb, Croatia.
Materials (Basel). 2022 Jan 25;15(3):902. doi: 10.3390/ma15030902.
This study evaluated the behavior of a new generation of bulk-fill resin composites after prolonged exposure to an aqueous environment and accelerated aging in ethanol. Six bulk-fill materials were tested (Tetric PowerFill, Filtek One Bulk Fill Restorative, Tetric EvoCeram Bulk Fill, Fill-Up!, Tetric PowerFlow, SDR Plus Bulk Fill Flowable) and compared to two conventional reference materials (Tetric EvoCeram and Tetric EvoFlow). Flexural strength, modulus, and Weibull parameters were examined at three time points: 1 day, 30 days, and 30 days followed by ethanol immersion. Degree of conversion after 30 days, water sorption, and solubility up to 90 days were also investigated. Filtek One Bulk Fill had the highest flexural strength and modulus among the tested materials, followed by Tetric PowerFill and SDR plus. Flexural strength and modulus of high-viscosity bulk-fill materials showed higher stability after accelerated aging in ethanol compared to their low-viscosity counterparts and reference materials. After 30 days, the degree of conversion was above 80% for all tested materials. Dual-cure material Fill-Up! was the best-cured material. The water sorption was highest for Fill-Up!, Filtek One Bulk Fill Restorative, and Tetric EvoFlow, while solubility was highest for Tetric EvoCeram. After aging in water and ethanol, new generation high-viscosity bulk-fill materials showed better mechanical properties than low-viscosity bulk-fill and conventional composites under extended light curing conditions.
本研究评估了新一代大体积填充树脂复合材料在长时间暴露于水环境及在乙醇中加速老化后的性能。测试了六种大体积填充材料（Tetric PowerFill、Filtek One Bulk Fill Restorative、Tetric EvoCeram Bulk Fill、Fill-Up!、Tetric PowerFlow、SDR Plus Bulk Fill Flowable），并与两种传统对照材料（Tetric EvoCeram和Tetric EvoFlow）进行比较。在三个时间点检测弯曲强度、模量和威布尔参数：1天、30天以及30天后进行乙醇浸泡。还研究了30天后的转化率、长达90天的吸水率和溶解度。在测试材料中，Filtek One Bulk Fill的弯曲强度和模量最高，其次是Tetric PowerFill和SDR plus。与低粘度同类材料和对照材料相比，高粘度大体积填充材料在乙醇中加速老化后的弯曲强度和模量表现出更高的稳定性。30天后，所有测试材料的转化率均高于80%。双固化材料Fill-Up!是固化效果最好的材料。Fill-Up!、Filtek One Bulk Fill Restorative和Tetric EvoFlow的吸水率最高，而Tetric EvoCeram的溶解度最高。在水和乙醇中老化后，新一代高粘度大体积填充材料在延长光固化条件下比低粘度大体积填充材料和传统复合材料表现出更好的机械性能。
