Analysis of root canal organic tissue dissolution capacity according to the type of irrigation solution and agitation technique

Abstract

Aim: To analyze the root canal organic tissue dissolution capacity promoted by irrigating solutions, with or without the use of different agitation techniques. Methods: Bovine pulp tissue fragments were initially weighed. The following irrigating solutions were tested: 2.5% sodium hypochlorite, 2% chlorhexidine digluconate solution, and distilled water. The irrigating protocols were: immersion, mechanical agitation with endodontic files, and ultrasonic or sonic systems (Endoactivactor® and Easy Clean®). At the end of the protocols, the pulps were weighed to determine their final weight. For comparison, the average percentage of tissue dissolution in relation to the groups was analyzed using the Kruskal-Wallis nonparametric test complemented by multiple comparisons test. The significance level was set at 5%. Results: Among the irrigation solutions, 2.5% sodium hypochlorite showed a higher dissolving power than 2% chlorhexidine digluconate and distilled water. Furthermore, ultrasonic and sonic systems were more effective irrigating protocols than immersion and mechanical agitation with endodontic files. Conclusions: The combination of sodium hypochlorite with an agitation system promotes a greater degree of tissue degradation.

Apical extrusion of sodium hypochlorite in immature teeth: comparison of three different cleaning protocols

“…Several studies have evaluated EC effectiveness in the dissolution of organic tissues (20) and debris (5,9,21–23), intracanal medication (24) and removal of filling materials (25). However, its potential for apical extrusion has not been previously investigated.…”

Sucesso no tratamento endodôntico em incisivo lateral superior com reabsorção radicular interna inflamatória não perfurante: relato de caso

“…Com a finalidade de aumentar a eficiência da limpeza do canal e área reabsorvida radicular, foi realizado protocolo com o Easy Clean preconizado por outros estudos, os quais adotaram o protocolo segundo o fabricante. Os autores ainda afirmam que o auxílio de instrumentos de agitação ultrassônica associados a 3 ativações de irrigação e agitação das substâncias de irrigação do canal radicular promovem eficiente limpeza e remoção de detritos dentinários (Kato, et al, 2016;Nunes, et al, 2016;Duque, et al, 2017).…”

Análise da remoção do hidróxido de cálcio de canais radiculares bovinos com diferentes técnicas através da microscopia eletrônica de varredura

“…A lima Easy Clean é um instrumento flexível que melhora a ação da solução irrigadora em áreas de difícil acesso ao canal radicular (19). Em um estudo realizado por Kato et al (14), a lima Easy Clean em movimento recíproco mostrou-se mais efetiva na remoção de debris no terço apical quando comparada com a IUP.…”