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Published in: Lasers in Medical Science 1/2010

01-01-2010 | Original Article

Low-level laser irradiation facilitates fibronectin and collagen type I turnover during tooth movement in rats

Authors: Yong-Deok Kim, Seong-Sik Kim, Seok-Jun Kim, Dae-Woo Kwon, Eun-Suk Jeon, Woo-Sung Son

Published in: Lasers in Medical Science | Issue 1/2010

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Abstract

The aim of this study was to investigate the effects of low-level laser (LLL) irradiation on the turnover of fibronectin and collagen type I in periodontal tissue during tooth movement in rats by immunohistochemistry. Thirty male Sprague–Dawley rats aged 15 weeks were assigned to either an experimental group (n = 15) that underwent LLL irradiation during tooth movement, or a control group (n = 15). In the experimental group, the gallium–aluminum–arsenide (Ga-Al-As) diode LLL (wavelength 808 nm; output 96 mW) was used to irradiate three areas on both the palatal side and the labial side of the maxillary incisor. The radiation was administered by the contact method for 10 s at 0.83 J/cm2 energy dose, once a day for 7 days. Total energy dose over the complete schedule was 34.86 J/cm2. The animals were killed on days 1, 3, 7, 14 and 21. There was no difference between the two groups in the amount of tooth movement. The immunohistochemistry results showed that the expression of fibronectin and collagen type I in the experimental group had significantly increased from day 1, with a more even distribution than in the control group, and that this difference was maintained until the end of the experiment. These results suggest that LLL irradiation facilitates the reorganization of the connective tissues during tooth movement in rats.
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Metadata
Title
Low-level laser irradiation facilitates fibronectin and collagen type I turnover during tooth movement in rats
Authors
Yong-Deok Kim
Seong-Sik Kim
Seok-Jun Kim
Dae-Woo Kwon
Eun-Suk Jeon
Woo-Sung Son
Publication date
01-01-2010
Publisher
Springer-Verlag
Published in
Lasers in Medical Science / Issue 1/2010
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-008-0585-8

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