声波器械与三种镍钛器械预备根管后牙本质裂纹的体外研究  

Study on the post-root dentin cracks of sonic instruments and three nickel titanium instruments

作　　者：魏晶 董波[1] 杨典凇 王佳琦[1] 李冬梅[1] WEI Jing;DONG Bo;YANG Dian-song;WANG Jia-qi;LI Dong-mei(Jiamusi University,Heilongjiang Jiamusi 154002,China})

机构地区：[1]佳木斯大学

出　　处：《微量元素与健康研究》2020年第1期13-15,共3页Studies of Trace Elements and Health

摘　　要：目的:评价机用镍钛器械与声波手机预备根管后牙本质裂纹产生的情况。方法:选取因正畸治疗需要拔除的单根管离体牙50颗作为研究样本,随机分为5组(每组10颗):A组为Rispisonic,B组为ProTaper NEXT,C组为MTWO,D组为M3-PRO,E组为K锉,分别进行根管预备。将预备完成的离体牙垂直于牙体长轴分别距离根尖3 mm、6 mm、9 mm水平截断,体视显微镜下观察并记录牙本质裂纹产生情况。结果:使用Sonic handpiece预备根管产生的牙本质裂纹情况与其他三组差异并无统计学意义(P>0.05)。结论:声波手机与其配套器械预备根管与其余三组产生的牙本质裂纹无差别。Objective:Evaluation of the cracking of dentin after root canal preparation with nickel-titanium instruments and sonic cell phone.Methods:A total of 50 single-rooted cannulas teeth removed from the Department of Oral and Maxillofacial Surgery at Jiamusi University Stomatological Hospital from August 2017 to December 2017 were randomly selected into 5 groups(10 in each group).Group A was Rispisonic,Group B was ProTaper NEXT,Group C was MTWO,Group D was M3-PRO,and Group E was K file,and root canal preparation was performed separately.Prepare the isolated tooth perpendicularly to the long axis of the tooth and cut it horizontally from the apical 3 mm,6 mm,and 9 mm,observe and record dentin cracks under stereo microscope.Results:There was no statistically significant difference between the other three groups using the Sonic handpiece to prepare the root canal(P>0.05).Conclusion:There is no difference between the number of dentin cracks produced by the sonic mobile phone and its supporting instruments and the other three groups.

关 键 词：声波手机 根管预备 牙本质裂纹 

分 类 号：R781.05[医药卫生—口腔医学]