Effect of the irrigation protocols on the elimination of dentin debris from simulated lateral canals

Abstract

<p><strong>Objective: </strong>Computed microtomography was used to evaluate the capacity of debris removal from simulated lateral canals, in conventional irrigation, passive ultrasonic irrigation (PUI), continuous passive irrigation (CUI), Endoactivator and EasyClean, for both types of motion (continuous and reciprocating). <strong>Material and Methods</strong>: Sixty acrylic incisors with 3 simulated lateral canals per tooth (cervical, middle and apical third) were instrumented with Reciproc 40/06 and then filled with dentin debris. The teeth were scanned and divided into 6 groups (n = 10) according to the irrigation protocol: G1 - conventional, G2 - PUI, G3 - CUI, G4 - Endoactivator, G5 - EasyClean continuous rotation and G6 - EasyClean reciprocating. After the irrigation protocols, the samples were scanned again. The initial and final volume images were analyzed and the percentage of debris removal were found for each group in all levels. <strong>Results:</strong> There were significant differences between the initial and final volume of debris after the protocols, with the exception of conventional irrigation group in the apical and cervical thirds, EasyClean reciprocating in the middle and cervical thirds, and CUI in the middle third. In the analysis between the groups: in the apical third, Endoactivator and PUI removed more debris than CUI (p < 0.05); in the middle and cervical thirds, PUI was more efficient than conventional irrigation, EasyClean reciprocating and CUI (p < 0.05). <strong>Conclusion:</strong> No method completely removed the debris. PUI was the method that showed greater effectiveness in cleaning the lateral canals.</p><p><strong>Keywords</strong></p><p>Root canal therapy; Microct; Dentin; Ultrasonic therapy.</p>

Efficacy of different irrigant activation devices in removing dentin debris from an artificial isthmus connecting curved canals

“…Despite a different protocol, their results were similar to those from the present study, as they found that EDDY removed more hydrogel than UAI and EA and no differences between the CNI and EA groups. In the present study dentin debris obtained from extracted teeth was used and packed into the artificial isthmus, as previously reported [19, 21, 22, 28, 29].…”

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

“…The amount of extrusion in vitro may be overestimated in comparison with the amount of extrusion in the real clinical setting, and this could be considered a limitation of the present study. Several studies have evaluated EC effectiveness in the dissolution of organic tissues (20) and debris (5,9,(21)(22)(23), intracanal medication (24) and removal of filling materials (25). However, its potential for apical extrusion has not been previously investigated.…”

“…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.…”