摘要
背景:课题设计研发的XH1型自锁托槽是一种新型的直丝弓固定矫治器,目前国内临床上应用的自锁托槽绝大多数是进口的,具有摩擦力低、疗程短、临床操作简便快捷等优点,但其成本非常昂贵,鉴于此自主研发了此托槽。目的:对XH1型自锁托槽槽沟进行扫描电镜观察,并对其托槽行能谱分析,与其他托槽相比较,测试其静、动摩擦力的大小。方法:实验采用4种右上尖牙托槽,即XH1型自锁托槽、2E1托槽、TP直丝弓托槽及AO自锁托槽,将托槽与弓丝分别组合后在XF-1型摩擦力测试仪上进行测试,记录Fluke190型示波器标记出的摩擦力mV-ms变化规律。运用Matlab2007编译软件对图形进行细化处理以去除异常数据,取出最大静摩擦力及动摩擦力时所对应的电压值,并转换为力值,进行统计分析。结果与结论:托槽不同静、动摩擦力不同。TP托槽静、动摩擦力较大,XH1托槽静、动摩擦力较小。2E1托槽与TP托槽无差别,AO托槽与XH1托槽无差别。结果提示,自主研发的XH1型自锁托槽静、动摩擦力小,自锁方式操作简单,成本较进口自锁托槽低,临床上可以进一步推广应用。
BACKGROUND:XH1 type self-ligating bracket is a novel appliance of straight wire appliance.Currently,the majority of clinically applied self-ligating brackets are imported,which has low friction,short course of treatment,simple and efficient clinical practice.However,its cost is also very high.Therefore,we designed and developed the bracket.OBJECTIVE:Through the scanning electron microscopy(SEM) observation of XH1-type self-ligating bracket grooves,to perform the energy spectrum analysis of bracket,compare with the other bracket,and test the static and dynamic friction of this bracket.METHODS:A total of 4 kinds of upper right canine brackets,XH1-type self-ligating brackets,2E1 brackets(Shanghai),TP Straight Wire Bracket(USA),and AO self-ligating bracket(USA) were used.Brackets and arch wire were combined,respectively and tested on the XF-1-type friction tester.The friction mv-ms change marked and saved by Fluke190-type oscilloscope was recorded.The compile software graphics Matlab2007 was used to smooth the graph to remove abnormal data.The maximum static friction and a corresponding voltage(mV) value dynamic friction were obtained,and converted into force values,followed by statistical analysis.RESULTS AND CONCLUSION:Different brackets had different static and dynamic frictions.The static and dynamic friction TP-type bracket was higher than XH1-type bracket's.There was no difference between 2E1 and TP bracket,AO and XH1 bracket.This XH1-type self-ligating brackets is a self-developed product,with small static and dynamic friction,simple sterilization,and low cost,which allow widely clinical application.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2010年第9期1567-1571,共5页
Journal of Clinical Rehabilitative Tissue Engineering Research
基金
黑龙江省攻关项目医药卫生技术领域基金资助
课题名称"仿真模拟正畸矫治过程中托槽与弓丝间摩擦力的研究"~~