Tam A, Yu D C
Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
Compend Contin Educ Dent. 2000 Nov;21(11):967-72; quiz 974.
This study used scanning electron microscopy to compare the effectiveness of two new canal lubricants in conjunction with sodium hypochlorite irrigation in removing smear layer. Both lubricants completely removed the smear layer in the coronal and middle thirds of the root canals, but only partially removed the smear layer in the apical thirds. An explanation of the findings is presented and the clinical significance of smear layer is discussed.
本研究采用扫描电子显微镜比较两种新型根管润滑剂与次氯酸钠冲洗联合使用在去除玷污层方面的效果。两种润滑剂均能完全去除根管冠部和中部三分之一的玷污层，但仅部分去除根尖三分之一的玷污层。文中给出了研究结果的解释，并讨论了玷污层的临床意义。
