三种不同品牌牙胶尖标准化的对比研究  

A comparative study of the standardization of three different brands of gutta-percha points

作　　者：邓丽萍 王玉玺 杨歆钰 DENG Li-ping;WANG Yu-xi;YANG Xin-yu(The Affiliated Stomatological Hospital,JiangXi Medical College,Nanchang University Jiangxi Provincial Key Laboratory of Oral Diseases.Jiangxi Provincial Clinical Reasearch Center for Oral Piseases,Nanchang 330000,China)

机构地区：[1]南昌大学附属口腔医院,口腔疾病江西省重点实验室,江西省口腔疾病临床医学研究中心,江西南昌330000

出　　处：《牙体牙髓牙周病学杂志》2024年第12期704-708,共5页Chinese Journal of Conservative Dentistry

基　　金：江西省自然科学基金资助项目(赣科发计字[2023]71号)。

摘　　要：目的:验证三种临床上常用牙胶尖品牌的尖端直径及锥度是否符合ISO标准。方法:使用牙胶尖测量尺评估中国柳苑(A组)、中国星宇(B组)和韩国Sure-endo(C组)2504和3504型号的牙胶尖尖端直径(DO)大小(n=100);再用标准镍钛器械制备的树脂根管模型评估锥度大小。计算各组样本D0偏大、偏小和符合ISO标准的数量百分比以及锥度也符合的样本占比。使用χ2检验分析数据,显著性水平为0.05。结果:51.7%的牙胶尖D0符合ISO标准,40.3%小于预期,8.0%大于预期。在A组中68%符合,12%偏小,20%偏大;B组中36%符合,60%偏小,4%偏大;C组中49%符合,51%偏小,0%偏大。2504型号中,B组D0更符合标准(P=0.0004)。3504型号中,A组D0更符合标准(P<0.0001)。锥度标准的牙胶尖占D0标准数的0%至34.4%,C组中没有DO和锥度同时符合标准的牙胶尖。结论:本实验中三种品牌牙胶尖D0及锥度均不符合ISO标准,但Sure-endo和柳苑品牌分别在2504和3504型号中相对更符合标准。AIM:To verify whether the apical diameters and tapers of three brands of gutta-percha points commonly used in clinical practice meet ISO standards.METHODS:The size of tip diameter(DO)(n=10O)was evaluated using a GUTTA-PERCHA GAUGE or China Liuyuan(Group A),China Sungwoo(Group B),and Korean Sure-endo(Group C)2504 and 3504 models(n=100);the taper size was then assessed using a resin root canal model prepared with standard rotary files.The percentage of the number of samples in each group whose DO was large,small and conformed to the ISO standard and the percentage of samples whose taper also conformed were calculated.Data were analyzed using chi2 test with a significance level of 0.05.RESULTS:51.7%of the gutta-percha points conformity with ISO,40.3%were smaller than expected,and 8.0%were larger than expected.In group A 68%conformity,12%were small and 20%were large,in group B 36%conformity,60%were small and 4%were large,and in group C 49%conformity,51%were small and 0%were large.In 2504,group B more in line with the standard(P=0.0004).In 3504,group A more in line with the standard is(P<0.0001).The taper standardized samples ranged from 0%to 34.4%of the DO standardized number,and there were no samples in Group C that met both DO and taper standards.CONCLUSION:None of the three brands of dental cementum tips in this experiment met the ISO standard for DO and taper,However,Sure-endo and Liuyuan brands were comparatively more compliant in the 2504 and 3504 models,respectively.

关 键 词：牙胶尖 标准化 ISO标准 根管充填 

分 类 号：R780.2[医药卫生—口腔医学]