RESUMO

Calcium fluoride-like materials ("CaF2") formed on dental surfaces after professional fluoride application are unstable in the oral environment but can be retained longer with a daily NaF mouthrinse. We tested the effect of twice daily 0.05% NaF rinses on the retention of "CaF2" formed on enamel and dentine after applying acidulated phosphate fluoride (APF). "CaF2" formed on enamel/dentine by APF application significantly decreased after exposure to artificial saliva and the 0.05% NaF rinse was ineffective to avoid this reduction. These findings suggest that the combination of APF and 0.05% NaF is not clinically relevant, either for caries or dental hypersensitivity.

Assuntos

Fluoreto de Cálcio/química , Cariostáticos/química , Esmalte Dentário/efeitos dos fármacos , Dentina/efeitos dos fármacos , Fluoreto de Sódio/química , Animais , Bovinos , Esmalte Dentário/química , Dentina/química , Fluoretos Tópicos/química , Imersão , Distribuição Aleatória , Reprodutibilidade dos Testes , Saliva Artificial/química , Propriedades de Superfície/efeitos dos fármacos , Fatores de Tempo