• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Prosthetic Dentistry >Shear bond strength of self-adhesive resin cements to base metal alloy
【24h】

Shear bond strength of self-adhesive resin cements to base metal alloy

机译：自粘树脂胶粘剂对贱金属合金的剪切粘结强度

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Statement of problem Many self-adhesive cements have been introduced in the past few years, with little or no data regarding their clinical performance. This study investigated the shear bond strength of some recently introduced self-adhesive resin cements. Purpose The purpose of this study was to evaluate the shear bond strength of self-adhesive and conventional resin-based cements to a base metal alloy. Material and methods Four groups (10-12 each) that comprised 3 self-adhesive cements (SmartCem2; RelyX Unicem; seT SDI) and a conventional resin-based cement (RelyX ARC) were tested. Cylindrical cement specimens (diameter, 3 mm; height, 3 mm) were applied to nickel-free base metal alloy (Sheradent) disks with a diameter of 12 mm, and the surface was treated with airborne-particle abrasion of 50 μm aluminum oxide. The metal disks were fixed in brass molds specifically designed for the shear bond test device. Test specimens were incubated at 37°C for 24 hours and then the shear bond was tested with a Zwick Roll testing machine at a 0.8 mm/min cross-head speed. In addition, bond failures were investigated and categorized as adhesive, cohesive, or mixed. Shear bond strengths were calculated by dividing the maximum debonding force over the cross-sectional area of each specimen. One-way ANOVA and the Tukey (honestly significant difference) post hoc test were used to test statistical significant differences among the groups (α=.05). Results Statistical analysis showed significant differences among different resin cements (F=14.34, P<.001). The highest mean shear bond strength was observed for SmartCem2 (14.18 MPa), and the lowest was reported for seT (3.52 MPa). The observed failure mode in all the materials was adhesive in nature, which occurred at the resin-metal interface. Conclusions The early bond strength of self-adhesive resin cements varied significantly among the tested materials. SmartCem2 showed the highest bond strength, which was 4 times the strength observed for seT SDI.
机译：问题陈述在过去的几年中，已经引入了许多自粘型水泥，关于其临床性能的数据很少甚至没有。这项研究调查了一些最近推出的自粘树脂水泥的剪切粘结强度。目的本研究的目的是评估自粘和常规树脂基水泥对贱金属合金的剪切粘结强度。材料和方法测试了4组（每组10-12个），其中包括3种自粘水泥（SmartCem2; RelyX Unicem; seT SDI）和常规的树脂基水泥（RelyX ARC）。将圆柱形水泥样品（直径3 mm;高度3 mm）施加到直径12 mm的无镍贱金属合金（Sheradent）圆盘上，并用50μm氧化铝的气载颗粒磨损处理表面。将金属盘固定在专门为剪切粘合力测试设备设计的黄铜模具中。将测试样品在37°C下孵育24小时，然后使用Zwick Roll测试机以0.8 mm / min的十字头速度测试剪切力。此外，对粘结失败进行了调查，并归类为粘合，内聚或混合。通过将最大剥离力除以每个样品的横截面积来计算剪切粘合强度。单因素方差分析和Tukey（诚实显着差异）事后检验用于检验各组之间的统计学显着差异（α= .05）。结果统计分析表明不同树脂胶结剂之间存在显着差异（F = 14.34，P <.001）。对SmartCem2观察到最高的平均剪切粘结强度（14.18 MPa），对seT观察到的平均剪切粘结强度最低（3.52 MPa）。在所有材料中观察到的破坏模式本质上是粘合剂，发生在树脂-金属界面。结论自粘树脂胶粘剂的早期粘结强度在测试材料之间有很大差异。 SmartCem2显示最高的粘合强度，是seT SDI观察到的强度的4倍。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号