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D Hanfland

Publications and source records attributed to D Hanfland.

3 recordsLinked to original sources
PubMed1995

[Fluoride release from toothpastes in the newly produced and stored states].

The free ionic concentration of fluoride of 16 toothpastes for adults, of 5 pastes for children, and of one fluoride gel were analysed straight after production and after 4 months of storage. The fresh products containing fluoride as inorganic salt of hydrofluoric acid or as organic fluoride salt contained more than 65% of the manufacturers declaration of ionic fluoride. In the pastes containing sodiummonofluorphosphate the assessed concentration of free fluoride ions was less than 20% of the declaration. After 4 months of storage more than 75% of the ionic fluoride found in the new products could still be detected. The pastes containing sodiummonofluorphosphate, however, showed an increase of the ionic concentration of fluoride.

Drug Storage↗
PubMed1993

[Fluoride release in children's toothpastes].

Comparative investigations of six toothpastes for children obtainable on the German market were carried out to determine their bioavailable fluoride concentration in vitro and in vivo. Four products contained sodium monofluorophosphate, one sodium fluoride and another amine fluoride. The product containing sodium fluoride had, both in the toothpaste-saliva-mixture in the test-tube as well as in the aquadest-toothpaste-saliva-mixture, derived from the oral cavity the maximum proportion of dissolved fluoride (> 70%). The product containing amine fluoride still had > 45% of free fluoride, the sodium monofluorophosphate products however had 10% or less of free fluoride.

Adolescent↗