A series of studies was performed to measure fluoride deposition in incipient caries-like lesions in enamel specimens contained in functional partial dentures in panelists who used fluoride dentifrices for periods ranging from two to nine weeks. The studies demonstrated the ability of the model to replicate the fluoride-uptake results obtained with a series of three dentifrices in two different panels of subjects. All fluoride dentifrices resulted in significant fluoride deposition, although significantly greater deposition was observed with a NaF-SiO 2 dentifrice.
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