Fluoride in formulas in 1992 and 1998

Background. Formula is a potential source of fluoride. In this study, the f luoride concentration of different formulas was measured by using a fluorid e-sensitive electrode. Methods. The examination of 22 formulae was performed in 1992, 38 additiona l samples were obtained and measured in 1998. Results. The results show an overall low fluoride concentrations (below 0,3 ppm) obtained in 1998, but the concentrations were higher in 1992 (p <0.05 ). Conclusions. In conclusion there is no increase of risk of dental fluorosis from the use of most current fomulae.