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即刻桩腔预备对三种根管预备方法预备的直根管根尖封闭性的影响 被引量:4

Effect of immediate post space preparation after three different root canal preparation technique on apical sealing ability in straight root canals
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摘要 目的研究三种不同根管预备方法根管预备、根管充填后即刻桩腔预备对直根管根尖封闭性的影响。方法离体直单根管上前牙124个,其中120个随机平均分为3组(n=40),A组:不锈钢根管锉常规法;B组:G型钻根管冠部预处理+不锈钢根管锉常规法;C组:手用ProTaper镍钛根管锉冠向下法,剩余4个随机平均分为阴性对照组和阳性对照组。所有根管均用侧方加压法充填,即刻手持垂直加压器去除部分充填材料,然后P型钻桩腔预备。用染料渗透法评价各组根尖封闭能力。结果B组G型钻根管冠部预处理+不锈钢根管锉常规法预备的根管和C组手用ProTaper镍钛根管锉冠向下法预备的根管即刻桩腔预备后,其根尖微渗漏较A组常规法预备的轻(P<0.05)。结论大锥度根管预备,根管充填后即刻桩腔预备的根尖封闭性较好。 Objective To investigate the effect of immediate post space preparation after root canal obturation with different root canal preparation technique on apical sealing ability in straight root canals. Methods One hundred and twenty four upper anterior teeth with straight root canals were collected, 120 teeth were randomly assigned to 3 groups ( n = 40). Group A: stainless steel file conventional root canal preparation technique; group B: Gate - Glidden drill coronal pre, flaring plus stainless steel file conventional root canal preparation technique; group C : ProTaper for hand crown - down technique. The remained four teeth were equally divided into negative control group and positive control group. All the prepared canals were obturated with cold lateral condensation. A portion of the root canal filling material was removed with vertical plugger, and post space was prepared with Peeso reamer. Dye penetration was used to evaluate the apical sealing ability of different groups. Results The apical mieroleakage of group B and C was less than that of group A( P 〈0.05). Conclusion The apical sealing ability of immediate post space preparation after root canal obturation with large taper root canal preparation was better than conventional root canal preparation.
出处 《现代口腔医学杂志》 CAS CSCD 北大核心 2008年第5期532-534,共3页 Journal of Modern Stomatology
基金 河北省科技厅攻关项目指导课题(052761223) 河北省卫生厅指导项目(2005173)
关键词 桩腔预备 根管充填 根尖封闭性 染料渗透法 Post space preparation Root canal obturation Apical sealing ability Dye penetration
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参考文献10

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共引文献9

同被引文献20

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  • 2肖丹,高燕,黄小兰.Cortisomol根管糊剂根尖封闭能力的实验研究[J].口腔医学研究,2005,21(3):319-320. 被引量:29
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