Mansouri Sohaib A, Zidan Ahmed Z
Faculty of Dentistry, Umm AlQura University, Makkah, Kingdom of Saudi Arabia, Phone: +966565874884, e-mail:
Department of Biomaterials, Faculty of Dentistry, University for Modern Sciences and Arts, Cairo, Egypt; Department of Restorative Dentistry, Umm AlQura University, Makkah, Kingdom of Saudi Arabia.
J Contemp Dent Pract. 2018 Sep 1;19(9):1129-1134.
The objective of this study is to compare the bulk-fill resin composite to a conventional one, as regards; water sorption, solubility, and their effect on color stability.
This study was conducted using two types of composites: Bulk-fill composite (Filtek Bulk-Fill) and nanohybrid composite for control (Filtek Z250 XT). Specimens were prepared using a ring mold, 10 from each material. Specimens were desiccated, then weighed in a digital balance until a stable mass was acquired. For water sorption test, specimens were immersed in distilled water and placed in a lightproof incubator at 37 ± 1°C and the mass was measured weekly for 8 weeks. For solubility test, specimens were desiccated again in the desiccator until a stable mass was achieved. A spectropho-tometer was used to record the baseline color measurements prior to water immersion and weekly for 8 weeks.
Bulk-fill composite showed higher water sorption value and lower water solubility values compared with that of the conventional one. No statistically significant difference was found for water sorption (p = 0.104) or water solubility (p = 0.098) between groups. The mean ΔE was lower in bulk-fill than conventional composite, and results showed a statistically significant difference (p = 0.009).
Bulk-fill resin composite yielded better color stability and similar water sorption and solubility values.
Bulk-fill resin composite can be used in esthetically concerned patients.
本研究的目的是比较大块充填树脂复合材料与传统复合材料在吸水性、溶解性及其对颜色稳定性的影响方面的差异。
本研究使用了两种类型的复合材料：大块充填复合材料（Filtek Bulk-Fill）和用于对照的纳米混合复合材料（Filtek Z250 XT）。使用环形模具制备试样，每种材料制备10个。将试样干燥，然后用电子天平称重，直至获得稳定质量。对于吸水性测试，将试样浸入蒸馏水中，置于37±1°C的遮光培养箱中，每周测量质量，共测量8周。对于溶解性测试，将试样再次在干燥器中干燥，直至获得稳定质量。在水浸前及之后每周使用分光光度计记录基线颜色测量值，共记录8周。
与传统复合材料相比，大块充填复合材料显示出更高的吸水值和更低的水溶值。两组之间在吸水性（p = 0.104）或水溶性（p = 0.098）方面未发现统计学上的显著差异。大块充填复合材料的平均ΔE低于传统复合材料，结果显示出统计学上的显著差异（p = 0.009）。
大块充填树脂复合材料具有更好的颜色稳定性以及相似的吸水和溶解值。
大块充填树脂复合材料可用于关注美观的患者。
