• 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 >Physical and metallurgical considerations of failures of soldered bars in bar attachment systems for implant overdentures: a review of the literature.
【24h】

Physical and metallurgical considerations of failures of soldered bars in bar attachment systems for implant overdentures: a review of the literature.

机译：植入物覆盖义齿的棒连接系统中焊条失效的物理和冶金考虑：文献综述。

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 purpose of this literature review was to identify the etiological factors of failure of soldered bars in bar attachment systems for removable implant overdentures. A search of MEDLINE using the key words "bar attachment systems" was performed of English language peer-reviewed journals published between 1975 and 2005. Clinical studies of implant overdentures with prosthodontic maintenance complications of bar attachment systems were identified to establish the perceived etiology of failure. A further search of MEDLINE using the key words "solder joint" was also performed of the fixed prosthodontic literature to identify specific factors affecting the strength, fatigue resistance, and quality of gold solder joints used for bar attachment systems. The first search on bar attachment systems produced evidence of low failure rates of interabutment bars, but higher failure rates of bars where distal cantilever extensions were used. There were no explanations or descriptions of the nature of those failuresin the clinical studies reviewed. The second search on fixed prosthodontic literature identified multiple factors that could potentially relate to the failed solder joints with bar attachments. Two potential sites of failure in bar attachments with distal cantilevers were identified, and a simple estimate of the tensile stresses at the solder joints was performed. The values found are comparable to the fatigue failure stresses reported in the searched literature.
机译：这篇文献综述的目的是确定可去除植入物覆盖义齿的棒连接系统中的焊条失效的病因。在1975年至2005年间对英语同行评审期刊进行关键词检索，搜索了MEDLINE，并使用关键词“附着物系统”进行了研究。确定了带有附着物义齿修复并发症的种植义齿的临床研究，以建立公认的失败病因。还使用关键词“焊点”对MEDLINE进行了进一步搜索，以查找固定修复体文献，以确定影响棒连接系统的金焊点强度，耐疲劳性和质量的特定因素。首次对钢筋连接系统进行搜索时，发现了基台间钢筋的失败率较低，但使用远端悬臂延伸的钢筋的失败率较高。在所审查的临床研究中，没有关于这些失败的性质的解释或描述。对固定修复牙齿文献的第二次搜索确定了多个因素，这些因素可能与带有条形附件的焊点失效有关。确定了带有远端悬臂的钢筋连接中两个潜在的失效部位，并对焊点处的拉应力进行了简单估算。所发现的值可与所搜索文献中报道的疲劳破坏应力相媲美。

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