[Pharmacokinetic study of various fluoride compounds in rats]

The fluoride excretion of 40 rats has been monitored after the consumption of drinking water containing NaF, CaF2 and CaF2 + alum (KRl/SO4/2. The fluoride excretion of the animals containing NaF and CaF2 + alum increased in a significant extent. No significant difference could be found in the fluoride excretion of the two groups. Statistically no significant increase has been observed in the fluoride ion excretion after the consumption of CaF2. These results suggest that by systemic intake of CaF2, no CaF2 absorbtion can be observed. So those undesirable gastric mucosa side effects that can be observed or presumed by the intake of NaF and CaF2 + alum are presumably neglibile.