| 人工唾液和乳酸对钛合金卡环疲劳强度影响的研究 |
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| 引用本文： | 王秀梅,谢伟丽,李艳琳,樊久铭,谢天卉. 人工唾液和乳酸对钛合金卡环疲劳强度影响的研究[J]. 口腔医学研究, 2008, 24(1): 29-31 |
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| 作者姓名： | 王秀梅 谢伟丽 李艳琳 樊久铭 谢天卉 |
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| 作者单位： | 哈尔滨医科大学口腔医学院修复科,黑龙江,哈尔滨,150001;哈尔滨工业大学力学实验中心;哈尔滨工业大学环境科学与工程 |
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| 基金项目： | 国家自然科学基金，黑龙江省教育厅科学技术研究项目 |
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| 摘 要： | 目的:探讨人工唾液和乳酸对钛合金卡环疲劳强度的影响.方法:用成品卡环蜡型制作钛合金卡环15个,分为3组,分别在空气中、人工唾液和乳酸溶液中进行测试,初始载荷强度和疲劳失效前的载荷循环次数被自动记录.疲劳裂纹进行扫描电镜分析.结果:钛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:结果表明人工唾液和乳酸溶液均使钛合金卡环的疲劳强度下降.
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| 关 键 词： | 钛合金 疲劳强度 卡环 |
| 文章编号： | 1671-7651（2008）01-0029-03 |
| 收稿时间： | 2007-08-23 |
Effect of Artificial Saliva and Lactic Acid on the Fatigue Strength of Titanium Alloy Clasp. |
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| WANG Xiu - mei, XIE Wei- li, LI Yan- ling.. Effect of Artificial Saliva and Lactic Acid on the Fatigue Strength of Titanium Alloy Clasp.[J]. Journal of Oral Science Research, 2008, 24(1): 29-31 |
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| Authors: | WANG Xiu - mei XIE Wei- li LI Yan- ling. |
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| Abstract: | Objective:To study the effect of artificial saliva and lactic acid solution on the fatigue strength of titanium alloy clasp.Methods:Fifteen casting clasp specimens of titanium alloys made from prefabricated wax were divided into 3 groups.Specimens were tested in air,artificial saliva and in lactic acid solution.Initial loading force and loading cycle before fracture were registered automatically,and fracture flaws were examined with SEM.Results:The initial loading forces of titanium alloy were not different among three test conditions(P>0.05).The tested clasps had the highest loading cycles in air and the lowest ones in lactic acid solution.Fatigue strength analysis 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 titanium alloy. |
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| Keywords: | Titanium alloy Fatigue strength Clasp |
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