EDTA润滑剂在减缓机用镍钛锉疲劳方面的临床研究  

Clinical analysis of EDTA effect on reducing the fracture of ProTaper Nickel titanium mechanical files during root canal preparation

作　　者：陈慧[1] 杜毅[1] 李纾[2] 

机构地区：[1]山东省济南市口腔医院口腔内科,济南250001 [2]山东大学口腔医院山东省口腔生物医学重点实验室,济南250012

出　　处：《口腔医学》2011年第7期413-415,共3页Stomatology

摘　　要：目的通过记录根管预备操作中ProTaper机用镍钛锉折断前使用次数,探讨乙二胺四乙酸(EDTA)在根管预备中减缓机用镍钛器械疲劳方面的的应用价值。方法收集大量离体磨牙和新ProTaper机用镍钛锉40套(S1-F2)共200支,Pro-Taper机用镍钛锉随机分为两组,对照组使用ProTaper机用镍钛锉+双氧水预备根管,实验组用EDTA+ProTaper机用镍钛锉根管预备,比较两组器械折断前不同使用次数情况。结果实验组折断前使用次数均高于对照组,两组折断前使用次数差异具有统计学意义(P<0.05)。结论在熟练掌握正确的使用技术后,在根管预备中应用EDTA润滑剂可减缓机用镍钛器械疲劳程度,从而减少断针的机率。Objective To study the effect of EDTA on reducing the fracture of ProTaper Nickel titanium mechanical files during root canal preparation by recording the times of application.Methods 40 sets of new ProTaper Nickel titanium mechanical files（S1-F2,totally 200 files） were collected,20 sets of the new ProTaper Nickel titanium mechanical files and EDTA in test group were used during root canal preparation,and the other 20 sets took routine preparation in control group.To observe the difference of times of application before they were broken during root canal preparation.Results The times of application of ProTaper Nickel titanium mechanical files before they were broken during root canal preparation in control group were less than those in the test group,the difference of times of application before they were broken during root canal preparation between two groups was significant（P0.05）.Conclusions The application of EDTA has good clinical effect on reducing the fracture of ProTaper Nickel titanium mechanical files during root canal preparation and should be adopted in root canal preparation.

关 键 词：乙二胺四乙酸 根管预备 PROTAPER机用镍钛锉 器械折断 

分 类 号：R783.1[医药卫生—口腔医学]