Effect of peracetic acid used as single irrigant on the smear layer, adhesion, and penetrability of AH Plus

Author(s)

Keine, Katia Cristina ; Kuga, Milton Carlos ; Cunha Tormin, Fernanda Borges ; Vencao, Ana Carolina ; Hungaro Duarte, Marco Antonio ; Chavez-Andrade, Gisselle Moraima ; Faria, Gisele

• Document type: Journal article
• Source: BRAZILIAN ORAL RESEARCH; v. 33, p. 11-pg., 2019-01-01.

Abstract

The aim of this study was to evaluate the effect of peracetic acid (PAA) as a single irrigant on the smear layer, on the intraradicular dentinal bond strength, and on the penetrability of an epoxy-based resin sealer into the dentinal tubules. A total of 120 roots were distributed into 4 groups according to the irrigant used in root canal preparation: 1% PAA (FAA); 2.5% NaOCl followed by final irrigation with 17% EDTA and 2.5% NaOCl (NaOCl-EDTA-NaOCl); 2.5% NaOCl (NaOCl); and saline solution (SS). The smear layer was evaluated using scanning electron microscopy. The bond strength of an epoxy-based resin sealer (AH Plus) to root dentin was evaluated by the push-out test and penetrability of the sealer into dentinal tubules was observed by confocal laser microscopy. The results were analyzed by the Kruskal-Wallis and the Dunn post-test (alpha = 0.05). The use of 1% PAA as single root canal irrigant provided smear layer removal and improved the penetrability and bond strength of AH Plus to root dentin in a manner similar to that of the NaOCl-EDTA-NaOCl group (p > 0.05). The NaOCl and SS groups had higher values of smear layer and lower values of sealer penetrability and dentin bond strength than the PAA and NaOCl-EDTA-NaOCl groups (p < 0.05). Thus, 1% PAA has the potential to be used as a single irrigant in root canals. (AU)

• FAPESP's process: 14/22549-7 - Effect of peracetic acid, used as irrigating solution, on the smear layer and on the penetration and bond strength of endodontic sealer to root dentin
• Grantee: Fernanda Borges Cunha Tormin
• Support Opportunities: Scholarships in Brazil - Scientific Initiation