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Proceedings Paper

Effects of 635- and 670-nm laser irradiation on Candida albicans: study in vitro
Author(s): Antonio Luiz Barbosa Pinheiro; Elizabeth A. C. Ponzi; Maria da Paz C. Silva; Alessandro L. B. Vieira
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Paper Abstract

This study aimed to assess the effect of the use of lasers (635; 670nm) on Candida albicans In Vitro. Cultures of microorganisms were irradiated with and without artificial illumination and non-irradiated cultures acted as controls. A single irradiation with the dose of 1.5J/cm2 was used and measurements of DO and NC assessed the effects of the irradiation. The measurements were carried out with 24 (T1), 48 (T2) and 72 (T3)after irradiation. The results showed a significant difference between groups with relation to the DO on the presence of illumination. There are significant differences between the three groups at T1 and T3 related to the NC. In all situations significant differences were observed highest values occurred when illumination was not used. Cultures irradiated with the laser 635 nm grow faster than those irradiated with the laser 670 nm. Measurements of DO/NC were sensitive to detect changes in Candida albicans cultures irradiated or not. It is concluded that a single irradiation of Candida albicans cultures with laser of 670 and 635 nm results in proliferation of the microorganisms In Vitro.

Paper Details

Date Published: 19 May 1999
PDF: 5 pages
Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); doi: 10.1117/12.348326
Show Author Affiliations
Antonio Luiz Barbosa Pinheiro, Univ. Federal de Pernambuco School of Dentistry (Brazil)
Elizabeth A. C. Ponzi, Univ. Federal de Pernambuco School of Dentistry (Brazil)
Maria da Paz C. Silva, Univ. Federal de Pernambuco School of Dentistry (Brazil)
Alessandro L. B. Vieira, Univ. Federal de Pernambuco School of Dentistry (Brazil)

Published in SPIE Proceedings Vol. 3593:
Lasers in Dentistry V
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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