人工唾液和乳酸对Vitallium 2000钴铬钼合金卡环疲劳强度影响的研究

›› 2016, Vol. 36 ›› Issue (1): 34-36.

人工唾液和乳酸对Vitallium 2000钴铬钼合金卡环疲劳强度影响的研究

王秀梅¹,孙鹏¹,张学锋²

1. 大连市第三人民医院
2. 辽宁省大连市第三人民医院口腔科

收稿日期:2014-09-12 修回日期:2014-11-12 出版日期:2016-01-28 发布日期:2016-01-08
通讯作者: 王秀梅 E-mail:wxium2005@163.com

The effect of artificial saliva and lactic acid on fatigue strength of Vitallium 2000 Co-Cr-Mo alloy clasp

Received:2014-09-12 Revised:2014-11-12 Online:2016-01-28 Published:2016-01-08

摘要/Abstract

摘要： 目的探讨人工唾液和乳酸对Vitallium 2000钴铬钼合金卡环疲劳强度的影响。方法用成品卡环蜡型制作Vitallium 2000钴铬钼合金卡环15个，分为3组，分别在空气、人工唾液和乳酸溶液中进行测试。自动记录初始载荷强度和疲劳失效前的载荷循环次数，扫描电镜分析疲劳裂纹。结果 Vitallium 2000钴铬钼合金卡环在不同测试条件下的初始载荷强度无差异（P＞0.05）。在空气中的循环次数最高，在乳酸溶液中的循环次数最低。SPSS软件分析表明3组之间的疲劳强度有显著性差异（P＜0.01）。结论人工唾液和乳酸溶液均使Vitallium 2000钴铬钼合金卡环的疲劳强度下降。

关键词: Vitallium 2000钴铬钼合金, 疲劳强度, 卡环

Abstract: Objective To study the effect of artificial saliva and lactic acid solution on the fatigue strength of Vitallium 2000 Co-Cr-Mo alloy clasps. Methods 15 clasp specimens of Vitallium 2000 Co-Cr-Mo alloy clasps were made from prefabricated clasp wax, and were divided into 3 groups. Specimens were tested in air, artificial saliva and lactic acid solution. Initial loading force and loading cycle numbers before fracture were registered automatically, and fracture flaws were examined with a scanning electron microscope (SEM). Results Initial loading force of Vitallium 2000 Co-Cr-Mo alloy clasps didn’t differ significantly in three test conditions (P>0.05).The tested clasps had the highest loading number cycles in air and the lowest ones in lactic acid solution. Fatigue strength analysis of SPSS software showed a significant difference among three groups (P<0.01). Conclusion The results suggest that both artificial saliva and lactic acid solution reduce the fatigue strength of Vitallium 2000 Co-Cr-Mo alloy clasps.

Key words: Vitallium 2000 Co-Cr-Mo alloy, Fatigue strength, Clasp

中图分类号:

R783.1

王秀梅孙鹏张学锋. 人工唾液和乳酸对Vitallium 2000钴铬钼合金卡环疲劳强度影响的研究[J]. , 2016, 36(1): 34-36.

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