1Department of Esthetic and Conservative Dentistry, College of Dentistry, Almustansyria University, Baghdad, Iraq
2Department of Esthetic and Conservative Dentistry, College of Dentistry, University of Baghdad, Baghdad, Iraq
3Department of Basic Science, College of Dentistry, Almustansyria University, Baghdad, Iraq
The use of chitosan nanoparticles (CNPs) will improve anti-microbial efficacy, mechanical integrity of diseased dentin matrix and tissue regeneration. Mechanical preparation in root canal treatment leads to the formation of smear layer. The aim of this study was to evaluate the effectiveness of chitosan nanoparticles in combination with Glyde gel in removing of smear layer. Twenty-five extracted maxillary single-rooted premolars were selected, and divided into five groups according to irrigation material used, (GI=Glyde gel, GII=2: 1 (Glyde-CNPs) gel, GIII=NaOCl gel 5.25%, GIV=NaOCl gel 2%, GV=Saline only). The teeth were instrumented using ProTaper Next System (X1-X4) when one of five irrigant materials used as a lubricant during instrumentation. A scoring system was used to conduct the SEM assessment in coronal, middle and apical part. The statistical analysis was done with Chi square test at (P<0.05). The smear layer was significantly reduced in all groups except the control and NaOCl groups (P>0.05). Chitosan nanoparticles could enhance the activity of Glyde gel in removing the smear layer.
Chitosan, Nanoparticles, SEM, smear layer, chelation
