Author/Authors :
Mirseifinejad, Rahele Operative Dentistry Department - Dental School, University of Shahid Sadughi, Yazd , Tabrizizade, Mehdi Department of Endodontics - Dental School, University of Shahid Sadughi, Yazd , Davari, Abdolrahim Operative Dentistry Department - Dental School, University of Shahid Sadughi, Yazd , Mehravar, Fateme Student - Dental School, University of Shahid Sadughi Yazd, Yazd
Abstract :
Introduction: Effective durable adhesion between post material and dentine using resin
cements is essential for longevity of restoration. The aim of this in vitro study was to compare
the effect of different irrigants on smear layer removal after post space preparation. Methods
and Materials: A total of 75 extracted anterior human teeth were selected. The canals were
instrumented by rotary system and then were filled. After preparing the post space, teeth
were divided into 5 groups according to irrigants: 17% EDTA; 17% EDTA+2% CHX; 5.25%
NaOCl; 17% EDTA+5.25% NaOCl; and saline. The canals were irrigated with 5 cc of each
irrigants for 1 min. Specimens were examined with scanning electron microscopy (SEM).
Hulsmann’s score was used for marking of smear layer removal at coronal, middle and apical
thirds of post space. The data were analyzed using the Kruskal-Wallis and Mann-Whitney
U tests. Results: The results revealed that subsequent use of 17% EDTA+5.25% NaOCl was
more effective than the other groups in smear layer removal. No statistical difference was
found among different levels of root canal within each group. Conclusion: It can be
concluded that 17% EDTA+5.25% NaOCl could be an effective irrigant for smear layer
removal after post space preparation.
Keywords :
Post Space , Root Canal Irrigant , Scanning Electron Microscopy , Smear Layer
