三种高速牙科金刚石车针切削效率的观察  

The observation of cutting efficiency of three sorts of high speed dental diamond burs

作　　者：张建波[1] 施生根[1] 卢怡[1] 党平[1] 张震芳[1] 薛春怀 

机构地区：[1]解放军第三零六医院口腔科,主管技师北京100101

出　　处：《口腔颌面修复学杂志》2013年第3期173-176,共4页Chinese Journal of Prosthodontics

摘　　要：目的:比较国产Dimei、德国Heraeus和日本Mani三种高速牙科金刚石车针的切削效率。方法:选用三种同一型号的金刚石车针各10支,对同种铸造钴铬合金杆件进行切削试验,记录每支车针切断杆件所用的时间、称量每支车针切断杆件后金刚石损耗量、计算每秒钟磨除杆件的金属粉末量、观察电镜下三种车针切削前、后的表面形貌。结果:Dimei、Heraeus和Mani车针切断杆件所用的平均时间依次是:57.07s,49.65s,49.53s,Dimei组与其他两组有显著差异(P<0.01),Heraeus组与Mani组无明显差异;Dimei、Heraeus和Mani车针金刚石平均损耗量分别是:0.85mg,0.66mg,0.75mg,三者间差异无统计学意义(P>0.05);Dimei、Heraeus和Mani车针每秒平均磨除杆件金属粉末量分别是:1.29 mg,1.62 mg,1.48 mg;三组车针间均有显著差异(P<0.01);切削前Heraeus和Mani车针的表面形貌基本相同,Dimei车针与前两者存在差异。结论:Heraeus和Mani高速牙科金刚石车针切削效率接近,Dimei车针切削效率低于前两者。Objective： To compare the cutting efficiency of three sorts of high speed dental diamond burs as Dimei, Heraeus and MANI. Methods： Three groups of diamond burs （ten in each group） with the same size were chose to cutting the similar kind of castings with cobalt-chromium alloy. The time for cutting off rods, the amounts of diamonds loss, the amounts of metal powder from grinding rod per second were record. The surface topography of the three burs was observed by environmental scanning electron microscope. Results： ①The average time of Dimei, Heraeus and MANI spending in cutting the same castings was 57.07s, 49.65s, 49.53s respectively. There were significant differences between Dimei and others＇（P〈 0.01）. No significant difference was found between Heraeus and MANI; ② The average diamonds loss of Dimei, Heraeus and MANI was 0.85mg, 0.66rag, 0.75mg, respectively, with no significant difference （P〉0.05）; ③The average amounts of metal powder from grinding rod per second was 1.29mg, 1.62mg, 1.48mg respectively. Significant differences were found among the three groups （P〈0.01）; ④The surface topography of Heraeus and MANI were similar. Some differences were found between Dimei and others. Conclusions： The cutting efficiency of Heraeus and MANI had no significant difference and were higher than of the Dimer group.

关 键 词：金刚石车针 铸造钴铬合金杆件 切削效率 

分 类 号：R783[医药卫生—口腔医学]