Year : 2022

Volume : Volume 13

Issue : Issue 6

Address for correspondence :
Dr. Nilesh D Pardhe,
drpardhenilesh@hotmail.com

Abstract

Aim: The aim of this study was to evaluate the effect of smear layer removal agents 0.2% chitosan, 7% maleic acid, and 0.6% chitosan maleate on the push-out bond strength of AH Plus sealer to root dentin. Materials and Methods: Thirty single-rooted mandibular premolar teeth were decapitated and enlarged using Gates Glidden drills up to #3. Three slices with 2-mm thickness were obtained from the middle third of each root. After standardized irrigation using 5.25% sodium hypochlorite, the roots slices were randomly divided into three groups (n = 10) Group 1: 0.2% chitosan, Group 2: 7% maleic acid, and Group 3: 0.6% chitosan maleate. Final irrigation regimen was carried out and the root slices were, then, dried and AH plus sealer applied. Each root section was, then, subjected to a compressive load through a universal testing machine until sealer dislocation occurred. Bonded interface area was calculated. Results: The data were collected and statistically analyzed. Conclusion: Removal of smear layer with 0.6% chitosan maleate as a final rinse enhanced the adhesive ability of AH plus sealer, followed by 0.2% chitosan and 7% maleic acid. The new chelating solution 0.6% chitosan maleate gave highest push-out bond strength values when compared to 0.2% chitosan and 7% maleic acid. Keywords:  Chitosan, Maleic acid, Chitosan maleate, AH plus sealer, Smear layer removal, Bond strength.