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。
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.
出处
《口腔医学研究》
CAS
CSCD
2008年第1期29-31,共3页
Journal of Oral Science Research
基金
国家自然科学基金资助项目(编号:10472028)
黑龙江省教育厅科学技术研究项目(编号:10531104)
关键词
钛合金
疲劳强度
卡环
Titanitun alloy Fatigue strength Clasp
