[The effect of the light from a helium-neon laser on normal dental enamel solubility and in caries].

Effects of He-Ne laser radiation at a wavelength 0.63 micron for 90 sec on dental enamel mineral metabolism were studied from Ca, P levels and Ca/P ratio in 67 children aged 3 to 7. Ca and P solubility in surface enamel layers was found reduced after He-Ne laser irradiation in both healthy children and those with caries. Laser was found to normalize the oral fluid mineral composition.