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01-11-2007 | Original article

The importance of coherence length in laser phototherapy of gingival inflammation—a pilot study

Authors: T. Qadri, P. Bohdanecka, J. Tunér, L. Miranda, M. Altamash, A. Gustafsson

Published in: Lasers in Medical Science | Issue 4/2007

Abstract

The aim of this study was to investigate if coherence length is of importance in laser phototherapy. Twenty patients with moderate periodontitis were selected. After oral hygiene instructions, scaling and root planing (SRP), one side of the upper jaw was randomly selected for HeNe (632.8 nm, 3 mW) or InGaAlP (650 nm, 3 mW) laser irradiation. One week after SRP, the following parameters were measured: pocket depth, gingival index, plaque index, gingival crevicular fluid volume, matrix metalloproteinase (MMP-8), interleukin (IL-8) and subgingival microflora. The irradiation (180 s per point, energy 0.54 J) was then performed once a week for 6 weeks. At the follow up examination, all clinical parameters had improved significantly in both groups. A more pronounced decrease of clinical inflammation was observed after HeNe treatment. MMP-8 levels were considerably reduced on the HeNe side, while there was no difference for IL-8 or microflora. Coherence length appears to be an important factor in laser phototherapy.

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Title: The importance of coherence length in laser phototherapy of gingival inflammation—a pilot study
Authors: T. Qadri
P. Bohdanecka
J. Tunér
L. Miranda
M. Altamash
A. Gustafsson
Publication date: 01-11-2007
Publisher: Springer-Verlag
Published in: Lasers in Medical Science / Issue 4/2007
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-006-0439-1

At a glance: The STEP trials

Springer Medicine

The importance of coherence length in laser phototherapy of gingival inflammation—a pilot study

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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