手动或旋转根管锉结合超声波对C型根管清洗率的影响

发布时间：2018-04-14 15:13

本文选题：K型根管锉 + ProTaper系统　；参考：《上海口腔医学》2014年04期

【摘要】：目的:观察和评价手动不锈钢K型锉、ProTaper系统镍-钛旋转根管锉及是否联合使用超声波洗牙机冲洗C形根管的清洁效果,探索C形根管的最佳清洁方案。方法:选取50颗离体的下颌第二磨牙,随机分配至单纯K型锉清洁组、K型锉+超声波冲洗组、单纯ProTaper系统镍-钛旋转根管锉清洁组、ProTaper+超声波冲洗组和对照组,各10颗。经初步修形、清洁并经甲醛浸泡后染色。显微镜下观察和计算根管内坏死组织清洁率和削切面积,采用SPSS17.0软件包对数据进行统计学分析。结果:处理组的根管清洁率显著高于对照组(P0.05);各处理组中,根尖部的清洁率显著低于冠部和中部(P0.05);E组(ProTaper+超声)的削切分数低于其他处理组;根管锉+超声波冲洗组的削切分数显著低于单纯根管锉组(P0.05);管壁削切分数和清洁率存在负相关关系(r=-0.712,P=0.000)。经线性拟合,两者的依存关系为清洁率=98.325-4.325×管壁削切分数(R2=0.454,P0.05)。结论:C形根管修形和清洁过程中,建议主根管处优先考虑选择ProTaper镍-钛旋转根管锉冲洗,联合超声波冲洗,效果更佳。
[Abstract]:Objective: to observe and evaluate the cleaning effect of manual stainless steel K type file ProTaper system and whether to use ultrasonic washing machine to wash C shape root canal, and to explore the best cleaning scheme of C shape root canal.Methods: fifty mandibular second molars in vitro were randomly assigned to the ultrasonic washing group with K-type file cleaning, the control group with ProTaper ultrasonic washing group and the ProTaper system with pure nickel-titanium rotary canal file cleaning group, each with 10 teeth in the control group, 10 in the control group, 10 in the control group, 10 in the control group, 10 in the control group, 10 in the control group and 10 in the control group.After preliminary modification, clean and stained by formaldehyde immersion.The cleaning rate and cutting area of necrotic tissue in root canal were observed and calculated under microscope. The data were analyzed statistically by SPSS17.0 software package.Results: the cleaning rate of root canal in the treatment group was significantly higher than that in the control group (P 0.05), and the cleanness rate of the root tip in each treatment group was significantly lower than that in the crown and the middle group (P 0.05), and the cutting fraction of the treated group was lower than that of the other treatment groups.The cutting fraction of the root canal file group was significantly lower than that of the pure root canal file group (P 0.05), and there was a negative correlation between the cutting fraction of the canal wall and the cleaning rate.By linear fitting, the relationship between them is that the cleaning rate is 98.325-4.325 脳 the cut fraction of the pipe wall is R2O0.454U P0.05.Conclusion in the process of revision and cleaning, it is suggested that the primary root canal should be flushed with ProTaper nickel-titanium rotary root canal file, combined with ultrasonic wave, and the effect is better.
【作者单位】：山东省滨州医学院附属医院口腔内科;山东省滨州医学院卫生管理学院卫生统计学教研室;
【分类号】：R781.05

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