Costa Adilvania Ferreira da, Assis Juvêncio César Lima de
Bachelor's Degree Program in Physiotherapy, Santa Maria College, Cajazeiras, PB, Brazil.
An Bras Dermatol. 2012 Jul-Aug;87(4):654-6. doi: 10.1590/s0365-05962012000400029.
The objective of the present study was to perform an in vitro evaluation of the bactericidal action of a low-power arsenium-gallium (AsGa) laser at a wavelength of 904nm and energy density of 6 J/cm(2). Ten petri dishes were seeded with Pseudomonas aeruginosa and another ten with Staphylococcus aureus. The dishes were then randomly divided into four groups with five plates in each group. Two groups were treated with AsGa laser once a day for 5 days, while the other two groups received no treatment. No halo of growth inhibition was found in any of the groups. It was therefore concluded that laser treatment (AsGa, 904nm, 6J/cm(2)) had no bactericidal effect.
本研究的目的是对波长为904nm、能量密度为6J/cm²的低功率砷化镓（AsGa）激光的杀菌作用进行体外评估。十个培养皿接种铜绿假单胞菌，另外十个接种金黄色葡萄球菌。然后将这些培养皿随机分为四组，每组五个平板。两组每天用AsGa激光处理一次，共处理5天，而另外两组不进行处理。在任何一组中均未发现生长抑制晕圈。因此得出结论，激光处理（AsGa，904nm，6J/cm²）没有杀菌作用。
