Keyvan Saati, Sara Valizadeh, Marjan Ayyari, Shahram Amirifar
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引用次数: 0
摘要
目的：本研究比较了生物活性复合材料和增强杂交玻璃离聚体（GI）的抗弯强度。材料与方法：本体外实验研究采用内尺寸为2×2×25mm的不锈钢模具，采用Activa Bioactive复合材料（N=5）和EQUIA Forte Coat GI （N=5）制备10个矩形标本。试件的抗弯强度采用万能试验机进行三点弯曲试验，载荷为50±16N/min，十字速度为0.75±0.25mm/min。数据采用Mann-Whitney U检验（α=0.05）。结果：生物活性复合材料的平均抗弯强度为57.91MPa，增强复合GI的平均抗弯强度为19.20MPa。生物活性复合物的平均抗弯强度显著高于杂交GI （P=0.008）。结论：在体外研究的限制下，结果表明Activa生物活性复合物与EQUIA Forte Coat GI相比具有更高的抗弯强度。
In Vitro Comparison of Flexural Strength of a Bioactive Composite and a Reinforced Hybrid Glass Ionomer.
Objectives: The present study was conducted to compare the flexural strength of a bioactive composite and a reinforced hybrid glass ionomer (GI). Materials and Methods: In this in vitro experimental study, 10 rectangular-shaped specimens were fabricated from Activa Bioactive composite (N=5) and EQUIA Forte Coat GI (N=5) using stainless steel molds with internal dimensions of 2×2×25mm according to the manufacturers' instructions. The flexural strength of the specimens was measured with a universal testing machine with the three-point bending test using a load of 50±16N/min at a crosshead speed of 0.75±0.25mm/min. The data were analyzed using the Mann-Whitney U test (α=0.05). Results: The mean flexural strength was 57.91MPa for the bioactive composite and 19.20MPa for the reinforced hybrid GI. The mean flexural strength of the bioactive composite was significantly higher than that of hybrid GI (P=0.008). Conclusion: Within the limitations of this in vitro study, the results indicate that the Activa Bioactive composite exhibits greater flexural strength compared to EQUIA Forte Coat GI.
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