合金材料铸造卡环的循环疲劳  

Cycle fatigue of the alloy casting clasp

作　　者：贾爽 王德芳 叶荣荣 

机构地区：[1]上海市口腔病防治院总院口腔修复科,上海市200001

出　　处：《中国组织工程研究》2012年第16期3005-3008,共4页Chinese Journal of Tissue Engineering Research

摘　　要：背景:不同合金材料制作的铸造卡环在临床可摘局部义齿摘戴过程中会发生卡环的循环疲劳现象。目的:就铸造卡环的循环疲劳产生的原因、影响因素、测试方法等的研究状况作一综述。方法:应用计算机检索Medline数据库(1996-01/2011-01),以"castingclasp,cyclefatigue,effectingfactors,testmethods"为检索词;应用计算机检索中国知网数据库(1996-01/2011-01)、万方数据库(1996-01/2011-01),以"铸造卡环、循环疲劳、影响因素、测试方法"为检索词。结果与结论:目前已有许多不同合金材料制作的铸造卡环应用于临床中,如钴铬合金、钛合金以及近几年逐渐投入临床使用的高钴铬钼合金等,均取得了很好的效果。在可摘局部义齿摘戴过程中,卡环需反复进出基牙倒凹区,会出现卡环的循环疲劳。目前大量学者对卡环的循环疲劳进行研究,包括其产生的原因,有关影响因素,具体测试方法等,但如何有效减少卡环的循环疲劳尚有待于进一步的深入分析。BACKGROUND： The cycle fatigue of clasps casted by different alloys may occur when the denture is token off and worn in clinical practice. OBJECTIVE： To summarize the research conditions on the causes, effecting factors and test methods of cycle fatigue of casting clasp. METHODS： A computer-based online search of papers published between January 1996 to January 2011 was performed in Medline database, CNKI database and Wanfang database using the key words of ＂casting clasp, cycle fatigue, effecting factors, test methods＂ in English and in Chinese. RESULTS AND CONCLUSION： Currently, there are many casting clasp made of different alloy materials used in clinical work and satisfactory clinical effect have been already acquired. For instants, the cobalt-chromium alloy, titanium alloy and the high-cobalt-chromium-molybdenum alloy which is gradually used in clinical work. In the use of removable partial denture, the phenomenon of cycle fatigue of the casting clasp will come out because of access repeatedly to the undercut abutment area. There are many studies on the causes, effecting factors and test methods of cycle fatigue of casting clasp. But how to decrease the cycle fatigue effectively is still unclear.

关 键 词：铸造卡环 循环疲劳 影响因素 测试方法 综述文献 

分 类 号：R318[医药卫生—生物医学工程]