The Effect of Addition of Titanium Oxide Nanofillers on The Water Sorption and Solubility of Resin Based Composite (An In Vitro Study)

Iraqi Dental Journal Pub Date : 2014-09-15 DOI:10.26477/IDJ.V36I3.28

S. Saleem, D. Bakr, Dara H. Saeed

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Abstract

Background and Objectives: The aim of this study was to measure the water sorption (Wsp) and water solubility (Wsl) of modified microhybrid composite resins by adding Titanium oxide nanofillers in four concentration 0.5% , 1%, 3% and 5% and comparing them to unmodified microhybrid composite resins and to nanofilled composite resin. Methods: For water sorption (Wsp) and solubility (Wsl), ten disk-shaped specimens of each resin composite were made for each group and stored in desiccators until constant mass was achieved. Specimens were then stored in water for 7 days, and the mass of each specimen was measured. The specimens were dried again and weighed. The Wsp and Wsl were calculated from these measurements. Data analyzed by one-way ANOVA. Results: The results showed there were significant differences among the groups in the Wsp mean values which ranged from 20.2120 to 28.4680 μg/ mm³, while the Wsl mean values were ranged from 1.1060 to 5.6800 μg/ mm³. Conclusion: The addition of TiO2 nanofillers to microhybrid composite increased the Wsp and Wsl values compared to the control group but still lower than the value established by the ISO 4049 standard

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纳米二氧化钛填料的加入对树脂基复合材料吸水性和溶解度的影响(体外研究)

背景与目的:本研究通过添加纳米二氧化钛在0.5%、1%、3%和5%的浓度下对改性微杂化复合树脂的吸水性(Wsp)和水溶性(Wsl)进行测定，并与未改性微杂化复合树脂和纳米填充复合树脂进行比较。方法:每组制作10个圆盘状树脂复合材料的吸水性(Wsp)和溶解度(Wsl)，保存在干燥器中，直到达到恒定质量。然后将标本在水中保存7 d，并测量每个标本的质量。标本再次干燥并称重。Wsp和Wsl由这些测量值计算。数据采用单因素方差分析。结果:各组间Wsp均值在20.2120 ~ 28.4680 μg/ mm³之间，Wsl均值在1.1060 ~ 5.6800 μg/ mm³之间，差异有统计学意义。结论:微杂复合材料中TiO2纳米填料的加入使Wsp和Wsl值较对照组有所提高，但仍低于ISO 4049标准规定的值

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Iraqi Dental Journal

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