Alkali-soluble fluoride deposition on human enamel exposed to monofluorophosphate: containing toothpastes in vitro / Deposição de fluoreto-alcalino solúvel no esmalte humano exposto ao monofluorfosfato presente em pastas dentárias \"in vitro\"

ABSTRACT

Enamel specimens from unerupted third molars were treated with the supernatant of monofluorophosphate (MFP) containing toothpaste slurries in water. Calcium fluoride-like particles were formed on the enamel surface during a 24h exposure. The globules were soluble in alkali. More particles were seen on enamel treated with a toothpaste containing both MFP and NaF. The experiments showed that the calcium fluoride-like material formed on enamel after treatment with (MFP) containing toothpaste probably originates from the free fluoride present in the pastes. The relatively moderate deposition of fluoride may be of clinical significance because the teeth are so frequetly exposed to toothpaste. No firmly bound fluoride was found on treatment of enamel with (MFP) containing toothpaste