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首页> 外文期刊>Australian Dental Journal >A SEM evaluation of debris removal from endodontic files after cleaning and steam sterilization procedures.
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A SEM evaluation of debris removal from endodontic files after cleaning and steam sterilization procedures.

机译：清洁和蒸汽灭菌程序后从牙髓锉去除杂物的SEM评估。

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BACKGROUND: In recent times, it has been proposed to classify endodontic files as single-use items due to a perceived inability to adequately clean the instruments. The purpose of the present study was to quantify the surface debris on files removed from the manufacturer's packaging, and after cleaning using an ultrasonic bath or a thermal disinfector. METHODS: Stainless steel and rotary nickel-titanium files were examined after removal from the manufacturer's packaging, after instrumentation in broth-contaminated human teeth, and after various cleaning procedures. The cleaning procedures consisted of either a thermal disinfector cycle, ultrasonication with the files placed in a perforated container or ultrasonication with the files loosely placed in a beaker. The presence of manufacturing debris and biological debris was evaluated using scanning electron microscopy and quantified using image analysis software. RESULTS: The effectiveness of cleaning was not affected by variation in the size or taper ofthe files when an effective cleaning procedure was used. Cleaning the files in a thermal disinfector or by ultrasonication within a container did not consistently achieve complete removal of biological debris. Placing the files loosely in the ultrasonic bath achieved the most effective cleaning, an average of 98.33 per cent of the file surface area was freed of any biological debris. CONCLUSIONS: A conventional cleaning method is capable of effectively removing biological debris from endodontic files. The efficacy of ultrasonic cleaning was impaired when the files were placed within a perforated container.
机译：背景技术：最近，由于认为无法充分清洁器械，已提议将牙髓锉归类为一次性物品。本研究的目的是对从制造商的包装中取出的文件以及使用超声波浴或热消毒器进行清洁后的文件上的表面碎片进行量化。方法：从制造商的包装中取出不锈钢器械和镍钛合金旋转锉后，在受肉汤污染的人类牙齿中进行器械检查以及各种清洁程序后，都要进行检查。清洁程序包括热消毒循环，将锉刀放在穿孔容器中的超声波处理或将锉刀松散地放置在烧杯中的超声波处理。使用扫描电子显微镜评估制造碎片和生物碎片的存在，并使用图像分析软件进行量化。结果：使用有效的清洁程序时，清洁效果不受文件大小或锥度变化的影响。在热消毒器中清洁文件或在容器内通过超声处理无法始终完全清除生物碎片。将锉刀松散地放置在超声波浴中可获得最有效的清洁效果，平均98.33％的锉刀表面积没有任何生物碎片。结论：常规清洁方法能够有效地清除牙髓锉中的生物碎片。将锉刀放在带孔的容器中时，超声波清洁的功效会降低。

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