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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Evaluation of the flexural strength of dual-cure composite resin cements
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Evaluation of the flexural strength of dual-cure composite resin cements

机译：双固化复合树脂水泥的抗弯强度评估

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The aim of this study was to evaluate of flexural strength of some adhesive resin cements. Three dual-cure composite resin cements (Nexus 3; Variolink II, Panavia F) were prepared. The manufacturer's mixing directions for the cements were followed. Adhesive resin cement was mixed, placed in the rectangular portion of the mold. Fifteen specimens were prepared for each cements. The cements were light-activated with light lamp for 40 s on both and top and bottom surfaces. The each cement specimens were divided into three groups according to time of storage and stored in distilled water for 24 h, 15, and 30 days. Total 45 specimens were stored at 37°C (98.6 0F) in distilled water for 24 h, 15, and 30 days prior to tests. The flexural strength was tested wbox drawings light down and leftth a universal testing machine at a crosshead speed of 0.5 mm/min (0.02 in.) The maximum load was recorded as MPa. The results were analyzed by Analysis of Variance and Duncan test. The Panavia F resin cements content Bisphenol A was showed the highest flexural strength (80.80 MPa) (11.71 ksi) for 24 h. The lowest flexural strength was observed in Nexus 3 (51.00 MPa) (7.39 ksi). It was found significant interaction of material and time (p < 0.05). The types of cement and time of storage was statistically significant on the flexural strengths (p < 0.001).
机译：这项研究的目的是评估某些粘合树脂水泥的抗弯强度。制备了三种双固化复合树脂水泥（Nexus 3; Variolink II，Panavia F）。遵循制造商对水泥的混合说明。混合粘合树脂胶粘剂，将其置于模具的矩形部分中。每个水泥准备了15个样品。水泥在顶面和底面都用灯进行光活化40 s。根据保存时间将每个水泥样品分为三组，并在蒸馏水中保存24小时，15天和30天。测试前将总共45个样品在37°C（98.6 0F）的蒸馏水中保存24小时，15天和30天。抗弯强度的测试是在箱体图朝下的情况下进行的，然后以0.5 mm / min（0.02英寸）的十字头速度将其放在通用测试机上。最大载荷记录为MPa。通过方差分析和邓肯检验分析结果。 Panavia F树脂水泥含量双酚A在24小时内显示出最高的抗弯强度（80.80 MPa）（11.71 ksi）。在Nexus 3（51.00 MPa）（7.39 ksi）中观察到最低的弯曲强度。发现材料和时间之间存在显着的相互作用（p <0.05）。水泥的类型和储存时间在抗弯强度上具有统计学意义（p <0.001）。

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