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Fisioter. Bras ; 19(4): 436-443, Sept. 2018.
Article in Portuguese | LILACS | ID: biblio-1255231

ABSTRACT

Objetivos: Avaliar a interferência do policloreto de vinil (plástico filme) sobre a luminosidade emitida pelos LASERs Hélio-Neônio e Arseneto-Gálio. Métodos: Estudo experimental desenvolvido em ambiente laboratorial controlado. A coleta de dados foi realizada por meio de fotosensor (DET36A). A luminosidade dos LASERs foi avaliada nas situações: controle, policloreto de vinil em contato direto com a caneta e policloreto de vinil a 1cm de distância da caneta. Em cada situação foram realizadas 30 emissões (1, 4 e 8 J/cm²). Resultados: O contato direto reduziu em 19% a luminosidade do Hélio-Neônio e a 1cm de distância esta redução foi de 17% (p < 0,001). No Arseneto-Gálio esta redução foi de 8 e 21% (p < 0,001), respectivamente. Conclusão: O policloreto de vinil (plástico filme) reduz a luminosidade em aproximadamente 15% das diferentes canetas dos LASERs terapêuticos de baixa potência. (AU)


Objectives: To evaluate the interference of polyvinyl chloride (plastic film) on the light emitted by LASER Helium-Neon and Gallium-Arsenide. Methods: This experimental study was developed in a controlled laboratory environment. Data collection was collected using a photodetector (DET36A). The luminosity of the LASERs was evaluated in the situations: control, polyvinyl chloride in direct contact with the pen and polyvinyl chloride at 1 cm away from the pen. Luminosity of the LASERs was evaluated in the situations: control, polyvinyl chloride in contact with the skin and pen and polyvinyl chloride with 1 cm distance between the skin and pen. In each situation, 30 emissions (1, 4 and 8 J/cm²) were performed. Results: Direct contact reduced by 19% the luminosity of the Helium-Neon and 1 cm from this reduction was 17% (p < 0.001). In Gallium-Arsenide the reductions were 8% and 21% (p < 0.001), respectively. Conclusion: The results indicated that the Polyvinyl chloride (plastic film) reduces the luminous emission by about 15% of the different pens of low-power therapeutic LASERs. (AU)


Subject(s)
Low-Level Light Therapy , Wounds and Injuries , Physical Therapy Modalities , Lasers
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