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Erschienen in: Lasers in Medical Science 6/2022

02.06.2022 | Original Article

The effect of Er,Cr:YSGG laser on periodontopathic bacteria elimination: an in vitro study

verfasst von: Pornnutchar Sethasathien, Pornpen Tantivitayakul, Thitiwan Teparat-Burana

Erschienen in: Lasers in Medical Science | Ausgabe 6/2022

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Abstract

In vitro bacterial elimination using the erbium, chromium: yttrium–scandium–gallium–garnet (Er,Cr:YSGG) laser against periodontopathic bacteria was investigated. Bacterial suspensions of Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis were spread on agar plates and the Er,Cr:YSGG laser was applied at 40 mJ pulse energy for durations of 30 s, 60 s, and 90 s. The agar plates were incubated, and growth inhibition zones were assessed. Optimal laser irradiation durations to achieve maximal bacterial elimination were evaluated using laser ablation on the bacterial colonies. The remaining viable bacteria were determined by the colony-forming unit (CFU) counting method. Growth inhibition zones were observed at all irradiation durations for both A. actinomycetemcomitans and P. gingivalis. Mean logarithmic values of CFU/ml after bacterial colony irradiation for 0 s (control), 12 s × 1 lap, 24 s × 1 lap, 48 s × 1 lap, and 24 s × 2 laps were 8.82 ± 0.35, 7.31 ± 0.94, 6.32 ± 0.61, 3.17 ± 2.90, and 0.00, respectively, for A. actinomycetemcomitans and 9.83 ± 0.50, 9.42 ± 0.11, 6.90 ± 1.60, 2.33 ± 3.19, and 0.00 for P. gingivalis. Significant differences were found between the control group and the two irradiated groups 48 s × 1 lap and 24 s × 2 laps (p < 0.05), and also between irradiated groups 12 s × 1 lap and 24 s × 2 laps (p < 0.05). An Er,Cr:YSGG laser with power setting 1.5 W and 30 Hz frequency showed potential for bacterial elimination against A. actinomycetemcomitans and P. gingivalis in vitro. Significant bacterial elimination (> 99.99%) was observed after 48 s of irradiation.
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Metadaten
Titel
The effect of Er,Cr:YSGG laser on periodontopathic bacteria elimination: an in vitro study
verfasst von
Pornnutchar Sethasathien
Pornpen Tantivitayakul
Thitiwan Teparat-Burana
Publikationsdatum
02.06.2022
Verlag
Springer London
Erschienen in
Lasers in Medical Science / Ausgabe 6/2022
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-022-03573-5

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