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01-03-2008 | Original Article

Effect of defocused infrared diode laser on salivary flow rate and some salivary parameters of rats

Authors: Alyne Simões, José Nicolau, Douglas Nesadal de Souza, Leila Soares Ferreira, Carlos de Paula Eduardo, Christian Apel, Norbert Gutknecht

Published in: Clinical Oral Investigations | Issue 1/2008

Abstract

This study aims to investigate whether infrared diode low-level laser therapy (LLLT) increased salivary flow rate and altered pH value, protein concentration, and peroxidase and amylase activities in saliva of rats. Wistar rats were used and divided into three groups. Experimental groups (A and B) had their parotid, submandibular and sublingual glands submitted to diode laser, 808-nm wavelength, on two consecutive days. The dose results were 4 and 8 J/cm², respectively. A red guide light was used to visualize the irradiated area. Group C was irradiated only with red pilot beam and served as control. The saliva samples were collected after each irradiation step (first and second collection days) and 1 week after the first irradiation (seventh day). Statistical analysis was performed, and differences were observed according to different days of salivary collection. The results showed that salivary flow rate for groups A and B was higher on the seventh day if it is compared to data obtained for the first day (p < 0.05). LLLT applications on salivary glands are a therapy procedure that requires further studies.

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Title: Effect of defocused infrared diode laser on salivary flow rate and some salivary parameters of rats
Authors: Alyne Simões
José Nicolau
Douglas Nesadal de Souza
Leila Soares Ferreira
Carlos de Paula Eduardo
Christian Apel
Norbert Gutknecht
Publication date: 01-03-2008
Publisher: Springer-Verlag
Published in: Clinical Oral Investigations / Issue 1/2008
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-007-0135-y

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Effect of defocused infrared diode laser on salivary flow rate and some salivary parameters of rats

Abstract

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Abstract

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