Comparative Analysis of Dentinal Erosion after Passive Ultrasonic Irrigation versus Irrigation with Reciprocating Activation: An Environmental Scanning Electron Study

Simezo, Ana Paula; Bueno, Carlos Eduardo da Silveira; Cunha, Rodrigo Sanches; Pelegrine, Rina Andréa; Rocha, Daniel Guimarães Pedro; Martin, Alexandre Sigrist De; Kato, Augusto Shoji

doi:10.1016/j.joen.2016.09.016

Cited by 23 publications

(31 citation statements)

References 34 publications

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“…This finding is in contrast with those of most studies on the subject [8,9,16]. Corroborating the results reported by Schimidt et al [10], the present study also found a larger number of samples showing dentin erosion in the groups where different forms of activation were applied [10,36]. According to these authors, the eroded dentin surface showed significant irregularities, making it harder to identify dentinal tubules.…”

Section: Discussioncontrasting

confidence: 75%

Smear layer removal by passive ultrasonic irrigation and 2 new mechanical methods for activation of the chelating solution

et al. 2021

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Objectives The aim of this study was to compare smear layer removal by conventional application (CA), passive ultrasonic irrigation (PUI), EasyClean (EC), and XP-Endo Finisher (XPF), using 17% ethylenediaminetetraacetic acid (EDTA) after chemomechanical preparation, as evaluated with scanning electron microscopy (SEM). Materials and Methods Forty-five single-rooted human mandibular premolars were selected for this study. After chemomechanical preparation, the teeth were randomly divided into 5 groups according to the protocol for smear layer removal, as follows: G1 (control): CA of distilled water; G2 (CA): CA of 17% EDTA; G3 (PUI): 17% EDTA activated by PUI; G4 (EC): 17% EDTA activated by EC; and G5 (XPF): 17% EDTA activated by XPF. SEM images (×1,000) were obtained from each root third and scored by 3 examiners. Data were evaluated using the Kruskal-Wallis and Dunn tests ( p < 0.05). Results In the apical third, there were no statistically significant differences among the groups ( p > 0.05). In the cervical and middle thirds, the experimental groups performed better than the control group ( p < 0.05); however, G2 presented better results than G3, G4, and G5 ( p < 0.05), which showed no differences among one another ( p > 0.05). Conclusions No irrigation method was able to completely remove the smear layer, especially in the apical third. Using CA for the chelating solution performed better than any form of activation.

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Section: Discussioncontrasting

confidence: 75%

Smear layer removal by passive ultrasonic irrigation and 2 new mechanical methods for activation of the chelating solution

et al. 2021

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“…Duque et al 29 compared the efficacy of EA, EC, and PUI for the removal of isthmus debris from mesial roots of lower molars by scanning electron microscopy and concluded that rotational EC promoted better cleaning of the canal and isthmus. The positive results with the use of the EC device can be explained by the fact that it has been used in the rotational movement and its blades act on the walls of the root canals, releasing debris and microorganisms, as shown by the study by Simezo et al 30 Huffaker et al 31 compared the EA and the conventional syringe irrigation system to evaluate the microbial reduction in root canals associated with the use of intracanal medication with calcium hydroxide. There was no significant difference between the groups.…”

Section: Discussionmentioning

confidence: 99%

The Effectiveness of Three Irrigation Systems in the Enterococcus faecalis Reduction after Instrumentation with a Reciprocating Instrument

et al. 2020

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Objective This study aimed to analyze the effectiveness of three irrigation systems: EndoActivator, passive ultrasonic irrigation (PUI), and Easy Clean in the reduction of Enterococcus faecalis, after instrumentation with the reciprocating system, through microbiological collection and culture method. Materials and Methods A total of 60 extracted human lower premolars were used and standardized at 16 mm in length. The teeth were accessed, contaminated with E. faecalis, and incubated for 21 days at 37°C. Initial collections (S1) were made with an absorbent paper cone to confirm the contamination; subsequently, instrumentation was performed with WaveOne Primary. The teeth were divided into four groups according to the final irrigation protocol (n = 15): group 1. EndoActivator; group 2, PUI; group 3, Easy Clean; and group 4, control group irrigated with saline solution sterile and without agitation. In the final irrigation, the agitation of the 17% ethylene amine tetra-acetic acid (EDTA) solutions was used, then 2.5% sodium hypochlorite (NaOCl); in both for this, three cycles of 20 seconds each. After the chemical–mechanical preparation and agitation of the irrigating solutions, the final collections (S2) for counting the colony-forming units (CFU/mL) occurred. Results The Kruskal–Wallis test revealed that all the agitation systems reduced by 100% and the control group by 65.7%. Conclusion The control group presented a significantly higher amount of CFU/mL after the chemical–mechanical preparation than the other groups, which were similar to each other (p > 0.05).

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“…The EC system promotes cleaning using mechanical agitation of the irrigation solution and mechanical drag of the debris adhered to the canal walls. [21] This system has already been evaluated in previous studies regarding the potential to cause dentin erosion,[21] ability to clean canals and isthmus, and ability to penetrate the irrigating solution in lateral canals. [22] The efficacy of the EC system in bringing the irrigant to the problematic access sites of the RCS, represented in this study by the simulated lateral canals, was proven when compared to the ultrasonic irrigations (CUI and PUI).…”

Section: Discussionmentioning

confidence: 99%

Efficacy of passive ultrasonic irrigation, continuous ultrasonic irrigation versus irrigation with reciprocating activation device in penetration into main and simulated lateral canals

et al. 2019

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Context: The use of chemicals solutions and means of activation is of utmost importance in endodontic treatment. Aims: This study compared three activation techniques used in the final irrigation of the endodontic treatment. Subjects and Methods: Eighty uniradicular teeth were instrumented with the Protaper Universal system up to F4 file. After decalcification, the teeth had artificial lateral canals created at 2, 4.5 and 6 mm from working length (WL). The groups were randomly divided into four groups ( n = 20): control group (C), passive ultrasonic irrigation (PUI) group, continuous ultrasonic irrigation (CUI) group, and easy clean (EC) group. The penetration of the irrigant into the samples was evaluated using image observation using the Image J program. Statistical Analysis Used: The level of agreement among the observers was determined by the Cronbach's alpha test. The likelihood ratio test was used to evaluate possible differences between the groups and the Kendall's W statistic test to verify possible differences between the irrigant penetration levels in the lateral canals. The Fisher's exact test was applied to verify differences by the studied group considering the WL variables and lateral canals. Results: The results showed no statistical difference in the penetration of the irrigator in the main canal when compared to the C, PUI, CUI, and EC groups ( P > 0.05). Conclusions: The method using a positive syringe and needle pressure was not able to effectively carry the irrigator to the artificially made lateral canals, whereas PUI, CUI, and EC were equally efficient in this regard ( P < 0.01).

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Comparative Analysis of Dentinal Erosion after Passive Ultrasonic Irrigation versus Irrigation with Reciprocating Activation: An Environmental Scanning Electron Study

Cited by 23 publications

References 34 publications

Smear layer removal by passive ultrasonic irrigation and 2 new mechanical methods for activation of the chelating solution

Smear layer removal by passive ultrasonic irrigation and 2 new mechanical methods for activation of the chelating solution

The Effectiveness of Three Irrigation Systems in the Enterococcus faecalis Reduction after Instrumentation with a Reciprocating Instrument

Efficacy of passive ultrasonic irrigation, continuous ultrasonic irrigation versus irrigation with reciprocating activation device in penetration into main and simulated lateral canals

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