The unique position of the<unk>  is based on their special molecular structure: the fluoride ion is bound to an organic fatty acid<unk>  fragment. This is not the case for the inorganics fluorides such as sodium fluoride and sodium monofluorophosphate.<unk> s have a hydrophobic molecular moiety, the non-polar tail, with a hydrophilic component, the polar<unk>  head. For this reason, they act like surfactants, reducing the surface tension of saliva, and forming a homogeneous film on all oral surfaces. Due to their surface activity the<unk> s are rapidly dispersed in the oral cavity and wet all surfaces. In contrast, in the case of inorganic fluorides the counter ion (e.g. sodium) has no transport function; the fluoride is statistically distributed in the oral cavity.<unk>  covers the tooth surfaces with a homogeneous molecular layer. This continuous film prevents rapid rinsing off by the saliva. The<unk> s are thus available as an active agent for a longer period.<unk> s have a slightly acidic pH. For this reason, fluoride ions can combine rapidly with the calcium in dental enamel to form calcium fluoride. This acts as a fluoride depot over a longer period: Under cariogenic conditions fluoride ions are made available stimulating the remineralisation of dental enamel and thus prevent acid attacks.
Amine fluoride
Perchloryl fluoride
Silver diammine fluoride
Sodium fluoride
Potassium fluoride
Hydrogen fluoride
Dichloroacetic acid
Silver nitrate