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Article

Effect of Sodium Hypochlorite Concentration in Continuous Chelation on Dislodgement Resistance of an Epoxy Resin and Hydraulic Calcium Silicate Sealer

1
Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal 576104, India
2
Clinic of Conservative and Preventive Dentistry, University of Zurich, 8032 Zurich, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Hsiuying Wang
Polymers 2021, 13(20), 3482; https://doi.org/10.3390/polym13203482
Received: 6 September 2021 / Revised: 5 October 2021 / Accepted: 7 October 2021 / Published: 11 October 2021
(This article belongs to the Special Issue Biomaterials in Medical Applications)
The conditioning of the root canal wall during chemo-mechanical root canal treatment differentially affects the adhesion of root canal sealers. This investigation evaluated the impact of sodium hypochlorite (NaOCl) concentration as used in a root canal irrigation concept called continuous chelation, with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) contained in the NaOCl solution that is applied. Fourier-transform infrared spectra of the dentinal wall were gathered. The consequential effects on push-out bond strength of an epoxy resin (AH Plus) versus a hydraulic CaSi sealer (BioRoot RCS) were assessed. Single-rooted extracted human teeth were used and irrigated with pure NaOCl at a concentration of 0% (physiological saline), 2.5%, or 5.25%. Dual Rinse HEDP (9%) was added to the solutions, or not added for further control. Pure NaOCl solutions caused a decrease in the amide III: phosphate ratios, which was counter-acted by the addition of HEDP. It was observed that the adhesion of the epoxy resin sealer under investigation was negatively affected by this NaOCl deproteinization of the canal wall in a dose-dependent manner, while the opposite was observed with the CaSi sealer. HEDP when used in conjunction with NaOCl was beneficial for the adhesion of both sealers. View Full-Text
Keywords: root canal irrigants; root canal obturation; root canal filling materials root canal irrigants; root canal obturation; root canal filling materials
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MDPI and ACS Style

Ballal, N.V.; Roy, A.; Zehnder, M. Effect of Sodium Hypochlorite Concentration in Continuous Chelation on Dislodgement Resistance of an Epoxy Resin and Hydraulic Calcium Silicate Sealer. Polymers 2021, 13, 3482. https://doi.org/10.3390/polym13203482

AMA Style

Ballal NV, Roy A, Zehnder M. Effect of Sodium Hypochlorite Concentration in Continuous Chelation on Dislodgement Resistance of an Epoxy Resin and Hydraulic Calcium Silicate Sealer. Polymers. 2021; 13(20):3482. https://doi.org/10.3390/polym13203482

Chicago/Turabian Style

Ballal, Nidambur V., Amal Roy, and Matthias Zehnder. 2021. "Effect of Sodium Hypochlorite Concentration in Continuous Chelation on Dislodgement Resistance of an Epoxy Resin and Hydraulic Calcium Silicate Sealer" Polymers 13, no. 20: 3482. https://doi.org/10.3390/polym13203482

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