Miriam Graziele Magro , Joatan Lucas de Sousa Gomes Costa , Antonia Patricia Oliveira Barros , Marcus Vinicius Reis Só , Wilfredo Gustavo Escalante-Otárola , Milton Carlos Kuga
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引用次数: 0
Abstract
Purpose
This study evaluated the effectiveness of 10 % citric acid or 1 % peracetic acid, and their effects on radicular adhesive interface, when used as intermediate irrigation protocol between 2.5 % sodium hypochlorite and 2 % chlorhexidine in comparison with isopropyl alcohol or saline solution.
Materials and methods
One hundred and twenty root canals were chemical-mechanical prepared. The specimens were distributed in 6 groups (n = 20), according irrigation protocol: sodium hypochlorite and EDTA (SHS-EDT); sodium hypochlorite and chlorhexidine (SHS-CHX); sodium hypochlorite, saline solution and chlorhexidine (SAS-CHX); sodium hypochlorite, alcohol and chlorhexidine (IPA-CHX); sodium hypochlorite and citric acid and chlorhexidine (CIA-CHX); sodium hypochlorite, peracetic acid and chlorhexidine (PAA-CHX). Sixty specimens were submitted to scanning electron microscope analysis to residues incidence evaluation. Energy Dispersive X-Ray Spectroscopy analysis was performed only in radicular middle third. Sixty specimens were subjected endodontic obturation and slices were obtained in radicular thirds and submitted to push out bond strength and dentin tags extension evaluations. The data of residues incidence evaluation were submitted to Kruskal-Wallis/Dunn tests, while push-out bond strength and endodontic sealer dentin penetration data were submitted to ANOVA/Tukey tests.
Results
In all root canal thirds, SHS-CHX and SAS-CHX showed the highest. In all root canal thirds, IPA-CHX, CIA-CHX, PAA-CHX and SHS-EDT showed higher push out bond strength values. In all root thirds, IPA-CHX, CIA-CHX and PAA-CHX showed the greatest dentin tags extension.
Conclusion
Acids and isopropyl alcohol used as intermediate solution between sodium hypochlorite and chlorhexidine provides lower residues incidence and the highest bond strength values and tags extension.
期刊介绍:
The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.