钴铬合金、钛合金与高钴铬钼合金铸造卡环循环疲劳的研究  

Cyclic fatigue of casting clasps in cobalt chromium alloy,titanium alloy and high cobalt chromium molybdenum alloy

作　　者：贾爽 王德芳 叶荣荣 包向军 

机构地区：[1]上海市口腔病防治院,上海200001

出　　处：《上海交通大学学报（医学版）》2013年第6期782-785,共4页Journal of Shanghai Jiao tong University:Medical Science

摘　　要：目的研究钴铬合金、钛合金与高钴铬钼合金制作的卡环产生的循环疲劳情况。方法将钴铬合金、钛合金与高钴铬钼合金制作的铸造卡环相应地进入基牙两种倒凹深度(0.25 mm和0.50 mm),进行临床使用5年循环疲劳的模拟测试,对循环疲劳前后卡环脱位力进行测试和比较。结果对三种合金材料制作的铸造卡环循环疲劳前后脱位力的统计学分析结果显示,在倒凹深度相同的情况下,钛合金制作的卡环脱位力最小,高钴铬钼合金制作卡环脱位力最大,三种合金材料制作卡环脱位力比较差异均有统计学意义(P<0.05);在卡环制作合金材料相同的情况下,倒凹深度为0.50 mm的卡环脱位力显著大于倒凹深度为0.25 mm时,差异有统计学意义(P<0.05)。结论高钴铬钼合金的抗疲劳性能优于钴铬合金和钛合金,钛合金的抗疲劳性能最差。Objective To investigate the cyclic fatigue of casting clasps in cobalt chromium alloy, titanium alloy and high cobalt chromium molybdenum alloy. Methods The cyclic fatigue of three kinds of casting clasps in alloy materials of cobalt chromium alloy, titanium alloy and high cobalt chromium molybdenum alloy on the butments with two pour concave depth （0.25 mm and O. 50 mm） for simulation of clinical use for five years was examined, and the enclasp force before and after cyclic fatigue was tested. Results The statistical analysis of enclasp force test before and after cyclic fatigue of three kinds of casting clasps revealed that with the same pour concave depth, the enclasp force of casting clasps in titanium alloy was the lowest, that in high cobalt chromium molybdenum alloy was the highest, and there were significant differences among three kinds of casting clasps （P 〈 0.05）. With the same alloy materials, the enclasp force of pour concave depth of 0.50 mm was significantly higher than that of pour concave depth of 0.25 mm （ P 〈 0.05）. Conclusion The fatigue restraint ability of high cobalt chromium molybdenum alloy is superior to titanium alloy and cobalt chromium alloy, and the fatigue restraint ability of titanium alloy is the lowest.

关 键 词：钴铬合金 钛合金 高钴铬钼合金 卡环脱位力 循环疲劳 

分 类 号：R783.6[医药卫生—口腔医学]