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Comparison of apical irrigant solution extrusion among conventional and laser-activated endodontic irrigation

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Abstract

The aim of this study was to determine the amount of extruded endodontic irrigant among needle-syringe irrigation (NSI) and laser-activated irrigation (LAI) regimens. Twenty extracted maxillary central incisors were prepared utilizing GT professional rotary files (size 40, taper 0.06). Irrigation was performed with two 27 G irrigation needles (notched open ended (ON) and single side vented (SV)) each at two different irrigant volumetric flow rates (VFR)—0.05 ml/s (3 ml/min) and 0.10 ml/s (6 ml/min). LAI was performed with Er:YAG (erbium-doped yttrium aluminum garnet) using different fiber types (X-Pulse-14/400 cylindrical tip, Preciso- 14/300 flat cylindrical tip, PIPS- 14/400 quartz tapered tip). The Er:YAG laser with a wavelength of 2940 nm (Lightwalker AT, Fotona, Ljubljana, Slovenia) was used according to the following protocol: 10 mJ per pulse, 15 Hz, pulse duration 50 μs. Irrigation time was 60 s for all protocols. Precision syringe pump (PSP) maintained constant irrigant volumetric flow rate. Apically extruded irrigant was collected and net weighed for each protocol (N = 10). Data were analyzed by t tests and Kruskal-Wallis. All LAI regimens had statistically significant lower irrigant extrusion compared with NSI except for the SV 27 G needle used with 0.05 ml/s VFR when compared with the Preciso fiber tip (p = 0,230). The largest amount of extruded irrigant was with the ON 27 G needle at the 0.10 ml/s VFR, while the smallest was after LAI with PIPS fiber tip. The lower quantity of apically extruded irrigant during LAI (X-Pulse and PIPS) points out a safer endodontic irrigation method compared with conventional irrigations.

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Authors and Affiliations

  1. Department of Endodontics and Restaurative Dentistry, School of Dentistry, University of Rijeka, Braće Branchetta 20, 51 000, Rijeka, Croatia

    Jelena Vidas, Damir Snjaric, Alen Braut, Romana Persic Bukmir & Ivana Brekalo Prso

  2. Department of Fluid Mechanics and Computational Engineering, Technical Faculty, University of Rijeka, Vukovarska ul. 58, Rijeka, Croatia

    Zoran Carija

  3. Department of Endodontology, Dental School, Ghent University Hospital, Ghent University, C. Heymanslaan 10/1P8/route 25, 9000, Ghent, Belgium

    Roeland J. G. De Moor

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  1. Jelena Vidas
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Correspondence to Jelena Vidas.

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Vidas, J., Snjaric, D., Braut, A. et al. Comparison of apical irrigant solution extrusion among conventional and laser-activated endodontic irrigation. Lasers Med Sci 35, 205–211 (2020). https://doi.org/10.1007/s10103-019-02846-w

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