• 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 >Resistance to fracture of endodontically treated teeth restored with different post systems.
【24h】

Resistance to fracture of endodontically treated teeth restored with different post systems.

机译：用不同的牙后系统恢复对牙髓治疗牙齿的骨折的抵抗力。

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. Very little is known about the resistance to fracture of endodontically treated teeth restored with newly developed esthetic post systems. Purpose. This in vitro study compared the effect of 1 titanium and 3 esthetic post systems on the fracture resistance and fracture patterns of crowned, endodontically treated teeth. Material and Methods. A total of 40 recently extracted human maxillary canines with their crowns removed were endodontically treated. Four groups of 10 specimens were formed. Teeth were restored with titanium, quartz fiber, glass fiber, and zirconia posts and numbered as groups 1, 2, 3, and 4, respectively. All posts were cemented with Single Bond dental adhesive system and dual-polymerizing RelyX ARC adhesive resin cement. All teeth were restored with composite cores, and metal crowns were fabricated and cemented with glass ionomer cement. Each specimen was embedded in acrylic resin and then secured in a universal load-testing machine. A compressive load was applied at a 130-degree angle to the long axis of the tooth until fracture, at a crosshead speed of 1 mm/min. One-way analysis of variance and a Tukey test were used to determine the significance of the failure loads between groups (P<.001). A non-parametric chi(2) test was conducted for evaluation of the mode of failure (P<.001). Results. The mean failure loads (kg) were 66.95, 91.20, 75.90, and 78.91 for groups 1 to 4, respectively. Teeth restored with quartz fiber posts (group 2) exhibited significantly higher resistance to fracture (P<.001) than the other 3 groups. Teeth restored with glass fiber and zirconia posts (groups 3 and 4) were statistically similar (P>.05). Fractures that would allow repair of the tooth were observed in groups 2 and 3, whereas unrestorable, catastropic fractures were observed in groups 1 and 4 (P<.001). Conclusion. Within the limitations of this study, significantly higher failure loads were recorded for root canal treated teeth restored with quartz fiber posts. Fractures that would allow repeated repair were observed in teeth restored with quartz fiber and glass fiber posts. J Prosthet Dent 2002; 87:431-7.
机译：问题陈述。对于用新开发的美学牙柱系统修复的牙髓治疗牙齿的抗断裂性了解甚少。目的。这项体外研究比较了1种钛合金和3种美学牙柱系统对加冠，经牙髓治疗的牙齿的抗断裂性和骨折模式的影响。材料与方法。总共对40个最近拔除的人类上颌犬的冠进行了牙髓治疗。形成四组，每组10个标本。用钛，石英纤维，玻璃纤维和氧化锆柱修复牙齿，分别编号为1、2、3和4组。所有桩都用单键牙科胶粘剂系统和双聚合RelyX ARC胶粘剂树脂胶粘剂粘合。所有牙齿均用复合材料核修复，并制造了金属冠，并用玻璃离聚物粘合剂粘合。每个样本都嵌入丙烯酸树脂中，然后固定在通用负载测试机中。以1mm / min的十字头速度以130度角对牙齿的长轴施加压缩负载直至破裂。方差的单向分析和Tukey检验用于确定组之间的破坏载荷的显着性（P <.001）。进行了非参数chi（2）测试以评估故障模式（P <.001）。结果。第1组至第4组的平均故障载荷（kg）分别为66.95、91.20、75.90和78.91。用石英纤维桩修复的牙齿（第2组）显示出比其他3组明显更高的抗断裂性（P <.001）。玻璃纤维和氧化锆桩（第3组和第4组）修复的牙齿在统计学上相似（P> 0.05）。在第2组和第3组中观察到可以修复牙齿的骨折，而在第1组和第4组中观察到不可修复的催化性骨折（P <.001）。结论。在本研究的范围内，记录了用石英纤维桩修复的根管治疗牙齿的破坏载荷明显更高。在用石英纤维和玻璃纤维桩修复的牙齿中观察到可以重复修复的骨折。 J Prosthet Dent 2002; 87：431-7。

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