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首页> 外文期刊>Contemporary Clinical Dentistry >Apical extrusion of debris and irrigants using hand and three rotary instrumentation systems– An in vitro study
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Apical extrusion of debris and irrigants using hand and three rotary instrumentation systems– An in vitro study

机译：使用手动和三个旋转仪器系统对碎屑和冲洗液进行尖顶挤压–体外研究

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Introduction:Sterilization of the root canal is a prime aim of successful endodontics. The cleaning and shaping of the canal is directed as achieving this goal. The extrusion of apical debris has a deleterious effect on the prognosis of root canal treatment. Several instrument designs and instrumentation techniques have been developed to prevent this.Materials and Methods:Forty caries free single rooted human mandibular premolar teeth were divided in four groups of ten teeth each. Teeth in each group were instrumented until the working length with rotary ProTaper, K3, Mtwo systems, and hand K-type stainless steel files. Debris and irrigant extruded from the apical foramen were collected into vials and the amounts were quantitatively determined. The data obtained were analyzed using Kruskal-Wallis one-way analysis of variance and Mann-Whitney U tests.Results:The results show that all instrumentation techniques produced significant amount of extruded debris and irrigant. The engine-driven nickel-titanium systems showed less apical extrusion of debris and irrigant than manual technique. No statistically significant difference was found between the groups at [P > 0.05]. Maximum apical debris and irrigant extrusion was seen with K-file group and least in the Mtwo group.Conclusions:The use of rotary files and techniques to perform instrumentation does show less extrusion of the debris and irrigant from the apex. This can contribute to more successful endodontic therapy.
机译：简介：对根管进行灭菌是成功进行牙髓治疗的主要目的。运河的清洁和整形旨在实现这一目标。根尖碎片的挤出对根管治疗的预后具有有害作用。为防止这种情况，人们开发了几种仪器设计和仪器技术。材料与方法：将40颗无龋单根人下颌前磨牙分为四组，每组十颗。使用旋转式ProTaper，K3，Mtwo系统和手动K型不锈钢锉刀对每组中的牙齿进行检测直至工作长度。从根尖孔挤出的碎屑和冲洗液被收集到小瓶中，并进行定量测定。使用Kruskal-Wallis单向方差分析和Mann-Whitney U检验对获得的数据进行分析。结果：结果表明，所有仪器技术均产生大量挤压碎屑和冲洗液。由引擎驱动的镍钛系统比手工技术显示出的顶端碎片和冲洗液更少。两组之间无统计学差异[P> 0.05]。结论：使用K锉刀组的最大根尖杂物和冲洗液挤出量最大，而在Mtwo组中最少。结论：使用旋转锉刀和技术进行器械检查确实显示出从根尖挤出的杂物和冲洗液较少。这可以有助于更成功的牙髓治疗。

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