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01-01-2009 | Original Article

Decontamination of deep dentin by means of erbium, chromium:yttrium-scandium-gallium-garnet laser irradiation

Authors: René Franzen, Marcella Esteves-Oliveira, Jörg Meister, Anja Wallerang, Leon Vanweersch, Friedrich Lampert, Norbert Gutknecht

Published in: Lasers in Medical Science | Issue 1/2009

Abstract

The aim of this in vitro study was to evaluate the depth of effectiveness of erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser irradiation on microorganism reduction. From human roots, dentin slices of 100 μm to 1,000 μm thickness were prepared. These specimens were sterilized and then inoculated with 1 μl of Enterococcus faecalis suspension. The backs of the specimens were then irradiated with Er,Cr:YSGG radiation at a pulse energy of 3.13 mJ, delivered at an incidence angle of 5° to the dentin slice surface. A control group was left without irradiation. The remaining bacteria were collected in 1 ml sterilized NaCl solution, serially diluted and seeded in Columbia-Agar plates. Despite the low pulse energy of 3.13 mJ, the Er,Cr:YSGG laser irradiation resulted in significant bacterial reduction up to a dentin thickness of 500 μm (P < 0.05). Scanning electron microscopy (SEM) micrographs of the contaminated and irradiated surfaces showed the absence of a smear layer and opened dentinal tubules.

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Title: Decontamination of deep dentin by means of erbium, chromium:yttrium-scandium-gallium-garnet laser irradiation
Authors: René Franzen
Marcella Esteves-Oliveira
Jörg Meister
Anja Wallerang
Leon Vanweersch
Friedrich Lampert
Norbert Gutknecht
Publication date: 01-01-2009
Publisher: Springer-Verlag
Published in: Lasers in Medical Science / Issue 1/2009
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-007-0522-2

2024 ASCO Annual Meeting

Springer Medicine

Decontamination of deep dentin by means of erbium, chromium:yttrium-scandium-gallium-garnet laser irradiation

Abstract

2024 ASCO Annual Meeting

Springer Medicine

Abstract

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