Alzahrani Bashayer, Alshabib Abdulrahman, Awliya Wedad
Department of Restorative Dentistry, College of Dentistry, King Saud University P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Materials (Basel). 2023 Oct 13;16(20):6673. doi: 10.3390/ma16206673.
This study aimed to examine depth of cure (DoC), mass change, water sorption and solubility of dual-cured bulk-fill restorative materials (Surfil One and Activa) in comparison with a light-cured bulk-fill composite (Filtek One Bulk-Fill) and a resin-modified glass ionomer (Fuji II LC). Twenty specimens were prepared of each material using stainless steel molds designed with a slot (8 × 4 × 2 mm) and irradiated for either 20 or 40 s. The Vickers hardness (VHN) was measured at every 0.5 mm to assess the DoC after 24 h of storage at 37 °C. The depth of cure was reported as the depth corresponding to 80% of the maximum Vickers hardness. Disc-shaped specimens were prepared of each material ( = 5) to investigate mass change, sorption and solubility after 4 months of water storage. The data were analyzed using a two-way and one-way analysis of variance (ANOVA) followed by the Tukey post hoc test ( ≤ 0.05). Fuji II LC had the greatest DoC while Activa had the lowest. The two different irradiation times did not demonstrate a significant difference in DoC for all dual-cured materials ( > 0.05). Fuji II LC had the highest sorption while Filtek One showed the lowest. Surefil One and Fuji II LC had a negative solubility. This study concluded that dual-cured materials showed different depth of cure values despite having the same setting reaction. Both materials exhibited a high water sorption, which might jeopardize their dimensional stability and effect their clinical performance.
本研究旨在检测双固化大块充填修复材料（Surfil One和Activa）的固化深度、质量变化、吸水性和溶解性，并与光固化大块充填复合树脂（Filtek One Bulk-Fill）和树脂改性玻璃离子水门汀（Fuji II LC）进行比较。使用设计有狭槽（8×4×2 mm）的不锈钢模具为每种材料制备20个样本，并分别照射20秒或40秒。在37℃储存24小时后，每隔0.5 mm测量维氏硬度（VHN）以评估固化深度。固化深度报告为对应最大维氏硬度80%的深度。为每种材料制备圆盘形样本（n = 5），以研究在水储存4个月后的质量变化、吸附和溶解性。使用双向和单向方差分析（ANOVA），随后进行Tukey事后检验（p≤0.05）对数据进行分析。Fuji II LC的固化深度最大，而Activa的固化深度最小。对于所有双固化材料，两种不同的照射时间在固化深度上未显示出显著差异（p>0.05）。Fuji II LC的吸水性最高，而Filtek One的吸水性最低。Surefil One和Fuji II LC具有负溶解度。本研究得出结论，尽管双固化材料具有相同的固化反应，但它们的固化深度值不同。两种材料均表现出高吸水性，这可能会损害其尺寸稳定性并影响其临床性能。
