• 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 >Influence of different adhesive resin cements on the fracture strength of aluminum oxide ceramic posterior crowns.
【24h】

Influence of different adhesive resin cements on the fracture strength of aluminum oxide ceramic posterior crowns.

机译：不同粘合树脂胶粘剂对氧化铝陶瓷后牙冠断裂强度的影响。

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: The influence of different types of adhesive resin cements on the long-term prognosis of aluminum oxide ceramic posterior crowns is unclear. PURPOSE: The purpose of this study was to evaluate the fracture resistance of aluminum oxide ceramic on maxillary posterior crowns cemented with different resin luting agents before and after cyclic thermomechanical loading. Material and methods Forty-eight maxillary first molars were prepared and restored with standardized aluminum oxide ceramic (In-Ceram Alumina) crowns. The test specimens were randomly divided into 3 groups (n=16). The crowns were luted with an acrylic resin cement (Super-Bond C&B, control, Group SB) and 2 composite luting agents (Panavia F, Group PV; and Rely X Unicem, Group RX). Half of the specimens were exposed to thermomechanical fatigue in a masticatory simulator. All specimens were tested for fracture strength (N) using quasistatic loading. The Wilcoxon rank sum test was used to compare the fracture strength (alpha=.05). RESULTS: All specimens survived the exposure to the simulator. The following median fracture strength values were obtained without/with thermomechanical fatigue loading: Group SB, 2726 N/2673 N; Group PV, 2520 N/2083 N; and Group RX, 2036 N/2369 N. The fracture strength in Group PV after thermomechanical fatigue loading was significantly lower compared to the fracture strength in Group PV without artificial aging (P =.016), as well as significantly lower compared to Group SB with artificial aging (P =.003). CONCLUSION: Within the limitations of this study, all tested cements are capable of successfully luting aluminum oxide ceramic crowns. The fracture strength of Group PV after artificial aging was comparatively low.
机译：问题陈述：目前尚不清楚不同类型的粘性树脂胶粘剂对氧化铝陶瓷后牙冠的长期预后的影响。目的：本研究的目的是评估在循环热机械载荷之前和之后，用不同的树脂浸润剂粘结的上颌后牙冠上氧化铝陶瓷的抗断裂性能。材料和方法制备了48个上颌第一磨牙，并用标准化的氧化铝陶瓷（In-Ceram Alumina）牙冠修复。将测试样本随机分为3组（n = 16）。用丙烯酸树脂胶泥（Super-Bond C＆B，对照，SB组）和2种复合浸润剂（Panavia F，PV组;和Rely X Unicem，RX组）对冠进行浸润。一半的标本在咀嚼模拟器中暴露于热机械疲劳。使用准静态载荷测试所有样品的断裂强度（N）。使用Wilcoxon秩和检验比较断裂强度（α＝ .05）。结果：所有标本均幸免于暴露于模拟器中。在没有/有热机械疲劳载荷的情况下，获得以下中值断裂强度值：SB组，2726 N / 2673 N; PV组2520 N / 2083 N;和RX组，2036 N / 2369N。与没有人工老化的PV组相比，热机械疲劳载荷后PV组的断裂强度显着降低（P = .016），而与SB组相比则显着降低人工老化（P = .003）。结论：在本研究的范围内，所有经过测试的水泥均能够成功地将氧化铝陶瓷冠冕掉。人工时效后，PV组的断裂强度较低。

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