Artículos de revistas
In vitro effect of low-level laser therapy on typical oral microbial biofilms
Brazilian Dental Journal, v. 22, n. 6, p. 502-510, 2011.
Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
The aim of this study was to evaluate the effect of specific parameters of low-level laser therapy (LLLT) on biofilms formed by Streptococcus mutans, Candida albicans or an association of both species. Single and dual-species biofilms - SSB and DSB - were exposed to laser doses of 5, 10 or 20 J/cm 2 from a near infrared InGaAsP diode laser prototype (LASERTable; 780 ± 3 nm, 0.04 W). After irradiation, the analysis of biobilm viability (MTT assay), biofilm growth (cfu/mL) and cell morphology (SEM) showed that LLLT reduced cell viability as well as the growth of biofilms. The response of S. mutans (SSB) to irradiation was similar for all laser doses and the biofilm growth was dose dependent. However, when associated with C. albicans (DSB), S. mutans was resistant to LLLT. For C. albicans, the association with S. mutans (DSB) caused a significant decrease in biofilm growth in a dose-dependent fashion. The morphology of the microorganisms in the SSB was not altered by LLLT, while the association of microbial species (DSB) promoted a reduction in the formation of C. albicans hyphae. LLLT had an inhibitory effect on the microorganisms, and this capacity can be altered according to the interactions between different microbial species.
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Basso, Fernanda G.; Oliveira, Camila F.; Fontana, Amanda; Kurachi, Cristina; Bagnato, Vanderlei S.; Spolidório, Denise M. P.; Hebling, Josimeri; de Souza Costa, Carlos A.
Effects of copper vapor laser radiation on the root canal wall of human teeth: A scanning electron microscope study Niccoli-Filho, Walter; Garcia Da Silveira, Maria Cláudia; Dias Vieira Jr., Nilson; Riva, Rudimar
Effects of copper vapor laser radiation on the root canal wall of human teeth: A scanning electron microscope study Universidade Estadual Paulista (UNESP); Instituto de Pesquisas Energéticas e Nucleares (IPEN); Lasers Division (2005-06-01)Objective: The aim of this study is to analyze the effects of copper vapor laser radiation on the radicular wall of human teeth. Materials and Methods: Immediately after the crowns of 10 human uniradicular teeth were cut ...