The Effectiveness of Chelating Property of Chitosan Nanoparticles on Dentin Al-timan Jamal A. Abu1, Al-Huwaizi Hussain F.2, Abed Hayder H.3 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 Online published on 13 November, 2019. Abstract 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. Top Keywords Chitosan, Nanoparticles, SEM, smear layer, chelation. Top |