Accessibility Tools

Efficacy of Two Irrigants Used with Self-Adjusting File System on Smear Layer: A Scanning Electron Microscopy Study

Ö.G. Şen, S. Kaya, Ö. Er, T. Alaçam

International Scholarly Research Notices. 2014 Sep 23;2014:289164



Mechanical instrumentation of root canals produces a smear layer that adversely affects the root canal seal. The aim of this study was to evaluate efficacy of MTAD and citric acid solutions used with self-adjusting file (SAF) system on smear layer. Twenty-three single-rooted human teeth were used for the study. Canals were instrumented manually up to a number 20 K file size. SAF was used to prepare the root canals. The following groups were studied: Group 1: MTAD + 5.25% NaOCl, Group 2: 20% citric acid + 5.25% NaOCl, and Group 3: Control (5.25% NaOCl). All roots were split longitudinally and subjected to scanning electron microscopy. The presence of smear layer in the coronal, middle, and apical thirds was evaluated using a five-score evaluation system. Kruskal-Wallis and Mann-Whitney U tests were used for statistical analysis. In the coronal third, Group 2 exhibited the best results and was statistically different froms the other groups (P<0.05). There was not a significant difference among the three thirds of groups according to in-group comparisons (P>0.05). The solutions used in Group 1 and 2 could effectively remove smear layer in most of the specimens. However, citric acid was more effective than MTAD in the three thirds of the canal.


The full article is available online: International Scholarly Research Notices

Sen irrigation 2014


Sign up to get the latest news
Subscribe To Our Newsletter
Invalid Input

ReDent Nova GmbH & Co. Kg.

Am Borsigturm 70
13507 Berlin, Germany