SCANNING ELECTRON-MICROSCOPE OBSERVATION OF CANAL CLEANLINESS
SCANNING ELECTRON-MICROSCOPE OBSERVATION OF CANAL CLEANLINESS
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DOI：
10.1016/s0099-2399(06)81630-4
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发表时间：
1990-06-01
影响因子：
4.2
通讯作者：
FRIEDMAN, S
中科院分区：
文献类型：
--
作者：
MANDEL, E;MACHTOU, P;FRIEDMAN, S
本研究的目的是评价三种根管预备方法的清洁效果。下颌磨牙的远端根管，分为三组，每组四颗牙齿，准备根据以下技术：手动（串行），超声波（Cavi-Endo），和自动化（Canal Endo）。在扫描电子显微镜下在三个水平上检查管壁表面。未发现制备技术导致任何区别于其他技术的特征性显微特征。缺乏这种差异使得不可能建立客观的标准来比较这些技术在根管清洁度方面的差异。已经确定，即使看起来清洁的根管也包括涂有玷污层的区域和具有未器械化区域甚至牙髓组织碎片的区域。
The aim of this study was to evaluate the cleansingefficiency of three root canal preparation techniques. The distal root canals of mandibular molars, divided into three groups of four teeth each, were prepared according to the following techniques: manual (serial), ultrasonic (Cavi-Endo), and automated (Canal Finder). The canal wall surfaces were examined under a scanning electron microscope at three levels. No preparation technique was found to result in any characteristic microscopic features that distinguished it from the other techniques. The lack of such differences makes it impossible to establish objective criteria for comparing these techniques in terms of root canal cleanliness. It was established that even canals that appeared to be clean included areas coated with smear layer and having uninstrumented areas and even pulpal tissue debris.