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新型口腔修复用钛锆铌锡合金的摩擦性能 预览 被引量:18

Wear resistance properties of Ti-Zr-Nb-Sn alloy for dental restoration
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摘要 背景:目前用于牙科修复体制作的钛合金特别是纯钛因其表面硬度较低、耐磨性较差,尤其在固定义齿修复时与天然牙不匹配,限制了其在口腔修复领域的应用。目的:探索新型口腔修复用钛锆铌锡合金的耐磨损性能。方法:使用MMV-1立式万能摩擦磨损试验机,以天然牙釉质为对照,滑石瓷为对磨物,在人工唾液,37℃试验工况下,对口腔修复用Ti-Zr-Nb-Sn、纯钛(TA2)进行二体摩擦磨损试验。采用扫描电镜观察表面磨损形貌,X射线衍射能谱仪分析磨屑成分,显微硬度仪测试表面硬度,电子天平得出磨损量。结果与结论:Ti-Zr-Nb-Sn合金、天然牙釉质的磨损体积量、显微硬度〉纯钛(TA2)(P〈0.05)。Ti-Zr-Nb-Sn合金磨损机制主要为磨粒磨损;纯钛磨损机制主要为黏着磨损,同时伴有磨粒磨损;牙釉质磨损主要为黏着磨损和磨粒磨损。磨屑成分分析Ti-Zr-Nb-Sn合金磨屑元素成分为Ti、Zr、Sn元素,未见Nb元素;纯钛磨损后磨屑成分主要为Ti元素。结果表明Ti-Zr-Nb-Sn合金较纯钛(TA2)具有更好耐磨损性性能,可以初步认为Ti-Zr-Nb-Sn合金是一种理想口腔修复用金属材料。 BACKGROUND:Ti alloy,in particular pure titanium,was limited by poor surface firmness and wear resistance as well as mismatch to natural teeth for the application of fixed denture.OBJECTIVE:To test and compare the wear resistance of a new Ti-Zr-Nb-Sn alloy for dental restoration.METHODS:A loading wear test was done under an artificial saliva environment at 37 ℃ by MMV-1 Vertical universal friction and wear testing machine.Dental metal materials including pure Ti(TA2)and Ti-Zr-Nb-Sn alloy were two-body wear tested in vitro.While the natural enamel was used as control,the steatite ceramic was used as counter sample.Wear surface morphology was observed with electron microscope,debris element analysis was carried out using X-ray diffraction energy spectrometer,the rigidity value was got by micro-rigidity test device,and volume wear loss was detected using electronic balance.RESULTS AND CONCLUSION:Volume wear loss and rigidity value of Ti-Zr-Nb-Sn alloy and natural enamel were higher than that of TA2(P 0.05).The main wear mechanism of Ti-Zr-Nb-Sn alloy was abrasive wear,and enamel and TA2 were adhesion and abrasive wear.Debris element analysis demonstrated that the major component of Ti-Zr-Nb-Sn alloy was Ti,Zr,and Sn,but no Nb;while,the major component of pure TA2 was Ti.Based on the current results,it was proposed that the Ti-Zr-Nb-Sn alloy had good surface wear resistance and were suitable for dental restoration application.
作者 胡欣 魏强 李长义 邓嘉胤 刘霜 张连云 Hu Xin1,Wei Qiang2,Li Chang-yi1,Deng Jia-yin1,Liu Shuang1,Zhang Lian-yun1 1School of Stomatology,Tianjin Medical University,Tianjin 300070,China;2Tianjin Key Laboratory of Composite and Functional Materials,School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China
出处 《中国组织工程研究与临床康复》 CAS CSCD 北大核心 2010年第12期 2159-2163,共5页 Journal of Clinical Rehabilitative Tissue Engineering Research
基金 天津市应用基础研究计划重点项目:齿科修复用钛-锆-铌-锡合金研制及临床应用研究(07JCZDJC07100) 中国博士后科学基金特别资助:(200801215) 高等学校博士学科点专项科研基金:齿科修复用钛合金研制及性能研究(200800620006)
作者简介 胡欣,男,1971年生,天津市人,汉族,2006年天津医科大学毕业,硕士,主治医师,主要从事口腔生物材料研究。huxin90@126.com 通讯作者:张连云,教授,主任医师,天津医科本学口腔医院,天津市300070
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