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Applied Sciences
Volume 11
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10.3390/app11167331
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Article

Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study

by
Matthias Widbiller
1,*,
Lukas Keim
1,
Ralf Schlichting
2,
Birgit Striegl
3,
Karl-Anton Hiller
1,
Rebecca Jungbauer
4,
Wolfgang Buchalla
1 and
Kerstin M. Galler
1
1
Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, 93053 Regensburg, Germany
2
Independent Researcher, 94032 Passau, Germany
3
Department of Biomedical Engineering, Technical University of Applied Sciences (OTH), 15745 Regensburg, Germany
4
Department of Orthodontics, University Hospital Regensburg, 93053 Regensburg, Germany
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(16), 7331; https://doi.org/10.3390/app11167331
Submission received: 8 July 2021 / Revised: 29 July 2021 / Accepted: 6 August 2021 / Published: 9 August 2021
(This article belongs to the Special Issue Innovative Techniques in Endodontics)
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Abstract

Aim of the study was to develop a standardized model system to investigate endodontic irrigation techniques and assess the efficiency of different activation methods on the removal of hard tissue debris in complex root canal systems. Mesial roots of mandibular molars were firstly scanned by micro-computed tomography (µCT) and allocated to three groups of irrigant activation: sonic activation (EDDY, VDW, Munich, Germany), laser activation (AutoSWEEPS, FOTONA, Ljubljana, Slovenia) and conventional needle irrigation (control). Roots were fixed in individual 3D-printed holders to facilitate root canal enlargement under constant irrigation with NaOCl (5%). To enable standardized quantification of remaining debris, BaSO4-enriched dentine powder was compacted into the canals, followed by another µCT-scan. The final irrigation was performed using 17% ethylenediaminetetraacetic acid (EDTA) and 5% sodium hypochlorite (NaOCl) with the respective activation method, and the volume of remaining artificial debris was quantified after a final µCT-scan. The newly developed model system allowed for reliable, reproducible and standardized assessment of irrigation methods. Activation of the irrigant proved to be significantly more effective than conventional needle irrigation regarding the removal of debris, which persisted particularly in the apical third of the root canal in the control group. The efficiency of irrigation was significantly enhanced with laser- and sonic-based activation, especially in the apical third.
Keywords: disinfection; sodium hypochlorite; ethylenediaminetetraacetic acid; lasers; computed tomography disinfection; sodium hypochlorite; ethylenediaminetetraacetic acid; lasers; computed tomography

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MDPI and ACS Style

Widbiller, M.; Keim, L.; Schlichting, R.; Striegl, B.; Hiller, K.-A.; Jungbauer, R.; Buchalla, W.; Galler, K.M. Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study. Appl. Sci. 2021, 11, 7331. https://doi.org/10.3390/app11167331

AMA Style

Widbiller M, Keim L, Schlichting R, Striegl B, Hiller K-A, Jungbauer R, Buchalla W, Galler KM. Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study. Applied Sciences. 2021; 11(16):7331. https://doi.org/10.3390/app11167331

Chicago/Turabian Style

Widbiller, Matthias, Lukas Keim, Ralf Schlichting, Birgit Striegl, Karl-Anton Hiller, Rebecca Jungbauer, Wolfgang Buchalla, and Kerstin M. Galler. 2021. "Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study" Applied Sciences 11, no. 16: 7331. https://doi.org/10.3390/app11167331

APA Style

Widbiller, M., Keim, L., Schlichting, R., Striegl, B., Hiller, K.-A., Jungbauer, R., Buchalla, W., & Galler, K. M. (2021). Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study. Applied Sciences, 11(16), 7331. https://doi.org/10.3390/app11167331

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