S形根管经往复运动单支锉系统预备后的形态对冲洗效果的影响

发布时间：2018-10-19 16:40

【摘要】：目的:比较S形根管经Reciproc和Mtwo两种机用镍钛器械预备后的形态对根管冲洗效果的影响。方法:40个S形树脂模拟根管,随机分为2组(n=20),分别使用Reciproc和Mtwo完成根管预备;使用30G侧方开口冲洗针头结合注射器,定速定量将蓝黑色墨汁注入预备后根管内,记录针头与根尖孔距离和气锁长度;使用25#/0.04锥度牙胶尖扰动方法排除气锁,记录气锁去除时间;抽取生理盐水对完全充盈后根管内的墨汁进行冲洗,记录冲洗后死水区长度。结果:Reciproc组针头与根尖孔距离为(4.276±0.221)mm,显著长于Mtwo组的(3.459±0.205)mm(P0.05);Reciproc组气锁长度为(4.472±0.230)mm,显著长于Mtwo组的(3.668±0.217)mm(P0.05)。Reciproc组气锁去除时间显著短于Mtwo组[(10.13±1.79)s对比(15.29±2.15)s,P0.05]。Reciproc组冲洗后死水区长度亦显著小于Mtwo组[(1.351±0.142)mm对比(2.245±0.206)mm,P0.05]。结论:Reciproc与Mtwo对S形根管预备后,根管形态上的差异影响根管冲洗的效果,Reciproc预备后的冲洗效果优于Mtwo。
[Abstract]:Objective: to compare the effects of the shape of S shaped root canal prepared by Reciproc and Mtwo on the washing effect of root canal. Methods: forty S-shaped resin simulated root canals were randomly divided into two groups (n ~ (20), Reciproc and Mtwo were used to prepare root canal, 30G lateral flushing needle and syringe were used to inject blue-black ink into the prepared root canal at a constant speed. The distance between the needle and the apical hole and the length of the air lock were recorded. The air lock was eliminated by using 25 #R / 0.04 taper gum tip disturbance method and the time of air lock removal was recorded. The ink in the root canal after complete filling was washed with normal saline and the length of the dead water area after washing was recorded. 缁撴灉:Reciproc缁勯拡澶翠笌鏍瑰皷瀛旇窛绂讳负(4.276卤0.221)mm,鏄捐憲闀夸簬Mtwo缁勭殑(3.459卤0.205)mm(P0.05);Reciproc缁勬皵閿侀暱搴︿负(4.472卤0.230)mm,鏄捐憲闀夸簬Mtwo缁勭殑(3.668卤0.217)mm(P0.05).Reciproc缁勬皵閿佸幓闄ゆ椂闂存樉钁楃煭浜嶮two缁刐(10.13卤1.79)s瀵规瘮(15.29卤2.15)s,P0.05].Reciproc缁勫啿娲楀悗姝绘按鍖洪暱搴︿害鏄捐憲灏忎簬Mtwo缁刐(1.351卤0.142)mm瀵规瘮(2.245卤0.206)mm,P0.05]. Conclusion: the difference of root canal morphology between Reciproc and Mtwo affects the effect of root canal washing after preparation of S-shaped root canal, and the effect of Reciproc preparation is better than that of Mtwo..
【作者单位】：首都医科大学附属北京口腔医院牙体牙髓科;中南大学湘雅医院口腔医学中心;
【基金】：国家自然科学基金(81200826)~~
【分类号】：R781.05

【共引文献】