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Comparison of apical extrusion of sodium hypochlorite in immature teeth after needle irrigation, ultrasonic irrigation, EDDY, Er:YAG, and diode lasers

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Abstract

This study aimed to assess the apical extrusion of sodium hypochlorite in immature teeth caused by needle irrigation, ultrasonic irrigation, EDDY, Er:YAG, and diode lasers. Seventy-five human maxillary anterior teeth were selected. After the apical 3 mm of the roots was resected, the canal lumen was enlarged with #2 to #5 Gates-Glidden burs. The teeth were fixed to the lid of a flat-sided clear plastic container, and the plastic containers were filled with 0.2% agarose gel containing 1 mL of 0.1% m-cresol purple. Then, the specimens were allocated into five groups according to the irrigation activation techniques: needle irrigation, ultrasonic irrigation, EDDY, Er:YAG laser, and diode laser. The apical extrusion of sodium hypochlorite caused the color change in the gel. The containers were digitally photographed, and the percentage of pixels of irrigant extrusion (the color change) in each photograph was calculated. The diode laser group showed a significantly lower percentage of pixels than needle irrigation, EDDY, and Er:YAG laser (p < 0.05). The irrigant extrusion value of the ultrasonic irrigation group was significantly lower than that of the EDDY and Er:YAG laser groups (p < 0.05). There was no significant difference between the other groups (p > 0.05). All the groups caused irrigant extrusion in the immature teeth. The diode laser and ultrasonic irrigation caused less sodium hypochlorite extrusion than EDDY and Er:YAG laser. The needle irrigation showed more irrigant extrusion than the only diode laser group.

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Data Availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Authors and Affiliations

  1. Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul, Turkey

    Alparslan Eren Karasu, Selin Goker Kamalı & Dilek Turkaydın

Authors
  1. Alparslan Eren Karasu
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  2. Selin Goker Kamalı
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  3. Dilek Turkaydın
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Contributions

All the authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Alparslan Eren Karasu, Selin Goker Kamali, and Dilek Turkaydin. The first draft of the manuscript was written by Selin Goker Kamali, and all the authors commented on previous versions of the manuscript. All the authors read and approved the final version of the manuscript. Conceptualization: Alparslan Eren Karasu, Selin Goker Kamali, and Dilek Turkaydin; methodology: Alparslan Eren Karasu, Selin Goker Kamali, and Dilek Turkaydin; formal analysis and investigation: Alparslan Eren Karasu and Selin Goker Kamali; writing (original draft preparation): Selin Goker Kamali; writing (review and editing): Alparslan Eren Karasu, Selin Goker Kamali, and Dilek Turkaydin; funding acquisition: Alparslan Eren Karasu; resources: Alparslan Eren Karasu; supervision: Dilek Turkaydin.

Corresponding author

Correspondence to Selin Goker Kamalı.

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Ethics approval

This study was approved by the Marmara University Health Sciences Ethics Committee (protocol no: 57–19.04.2021).

Consent to participate

This study was done on teeth that were selected from a random collection of human teeth, which were extracted for various reasons, not related to this study. Thus, for this type of study, formal consent is not required.

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The authors declare no competing interests.

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Karasu, A.E., Goker Kamalı, S. & Turkaydın, D. Comparison of apical extrusion of sodium hypochlorite in immature teeth after needle irrigation, ultrasonic irrigation, EDDY, Er:YAG, and diode lasers. Lasers Med Sci 38, 8 (2023). https://doi.org/10.1007/s10103-022-03683-0

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