[Ionofluor + laser = prevention]

On the basis of experience gained in previous research, an original technique for fixing fluoride on the enamel of healthy teeth for preventive purposes is described. An apparatus of ionophoresis with which it was possible to contain fluoride in the ionic state, and later a low power laser system with double red and infrared emission mixed in optic fibre were used to achieve this result. The proposed technique is not only extremely effective, offering as it does protection for at least 3 years, but is is very simple, practical and economical.