• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Lasers in Dentistry IX Jan 26-27, 2003 San Jose, California, USA >Quality improvement of photopolimerizable-cement root canal obturation
【24h】

Quality improvement of photopolimerizable-cement root canal obturation

机译：光致硬化水泥根管充填的质量改善

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

The sealing cements used in endodontics are of the type cured through chemical reactions. During the polymerization process, mechanical contractions are not uncommon, leading to non-perfect sealing. Photopolymerizable cements usually presents superior performance as compared to those chemically activated. However, difficulties in carrying the light to difficult-to-reach regions like the dental apex preclude those material of being accepted in the dental office routine. This work reports on a novel technique which allow the light curing of photopolymerizable cements in endodontic applications. A special light guide had been developed to allow the curing light to reach and polymerize the sealing cement in the apex region. The technique was tested by using single-root human teeth with normal canal morphology. The Ultradent EndoREZ root canal sealer and a resin-based photopolymerizable filler specially developed for the current application had been used. The cone-shaped light guide was introduced into treated canals filled with the photopolymerizable material, up to the apical region. Light from an argon laser was launched onto the light guide for polymerization. All test samples were immersed in methylene-blue solution for microleakage testing. All samples treated with the self-polymerizable material presented dye penetration to some extent. No sample within the group which had the filling material polymerized by using the light guide presented dye penetration through the canal wall.
机译：牙髓治疗中使用的密封胶是通过化学反应固化的类型。在聚合过程中，机械收缩并不少见，导致密封效果不佳。与化学活化的水泥相比，可光聚合的水泥通常表现出优越的性能。然而，将光携带到难以到达的区域例如牙科顶点的困难排除了那些材料在牙科诊所的日常工作中被接受。这项工作报告了一种新技术，该技术可以在牙髓应用中使光聚合性水泥光固化。已经开发了一种特殊的光导，以允许固化光到达并聚合顶点区域中的密封胶。通过使用具有正常牙根形态的单根人牙来测试该技术。使用了Ultradent EndoREZ根管封闭剂和专为当前应用开发的树脂基可光聚合填料。将锥形光导引入到充满光可聚合材料的经处理的根管中，直至根尖区域。来自氩激光器的光被发射到光导上以进行聚合。将所有测试样品浸入亚甲基蓝溶液中以进行微渗漏测试。用可自聚合材料处理的所有样品均在一定程度上呈现出染料渗透性。使用光导使填充材料聚合的组中的任何样品都不会出现染料穿透管壁的现象。

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