[Effect of helium-neon-laser radiation on microbes].

In a well-defined in-vitro experiment the effects of a He-Ne-laser of 6 mW output on some dominating microbes in the oral cavity were studied by using a scanning electron microscope. No changes on the surface in the irradiated colonies could be seen even after an exposition lasting for 60 minutes (continuous or pulsated wave). Therefore an antibacterial effect of softlaser-irradiation sometimes described in literature in questionable.