Department of Dental Materials, Manipal College of Dental Sciences, Mangalore, Karnataka, India.
Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, India.
Indian J Dent Res. 2024 Jan 1;35(1):76-79. doi: 10.4103/ijdr.ijdr_195_23. Epub 2024 Jun 20.
Wet oral environment may have deleterious effects on performance of the composites due to influences of water sorption and solubility. The study evaluated the hydrolytic degradation caused because of water sorption and solubility of silorane and methacrylate-based dental composites.
Ten disc samples (2 mm × 10 mm) were prepared. Samples were analyzed for water solubility and sorption according to ISO 4049:2000 regulations and tested for mass gain or loss following immersion in water or in artificial saliva at 1 day, 15 days, and 30 days period. Student's 't' test, repeated measures analysis of variance (ANOVA), and Tukey's post-hoc tests determined statistical significance of the experimental results with global significance set at P = 0.05.
Considerable sorption and solubility was observed with time in both materials on immersion. Silorane composites showed lower water sorption and solubility than methacrylate-based composite (MBC). Artificial saliva demonstrated higher sorption and solubility compared to distilled water.
Silorane composites display enhanced hydrolytic stability even after a month of immersion in contrast to conventional methacrylate-based composites (MBCs), making it a better alternative to MBC resins clinically.
由于吸水和溶胀的影响，湿润的口腔环境可能会对复合材料的性能产生有害影响。本研究评估了硅烷和甲基丙烯酸酯基牙科复合材料由于吸水和溶胀而引起的水解降解。
制备了 10 个（2mm×10mm）圆盘样品。根据 ISO 4049：2000 规定对样品的水溶性和吸湿性进行分析，并在水或人工唾液中浸泡 1 天、15 天和 30 天，测试质量增加或损失。采用学生 t 检验、重复测量方差分析（ANOVA）和 Tukey 事后检验，以 P=0.05 为总体显著性水平，确定实验结果的统计学意义。
两种材料在浸泡时均随时间表现出显著的吸水和溶胀。硅烷复合材料的吸水率和溶解度均低于甲基丙烯酸酯基复合材料（MBC）。与蒸馏水相比，人工唾液显示出更高的吸湿性和溶解度。
与传统的甲基丙烯酸酯基复合材料（MBC）相比，即使在浸泡一个月后，硅烷复合材料也表现出增强的水解稳定性，使其成为临床上替代 MBC 树脂的更好选择。
