Fluoride Release of Fresh and Aged Glass Ionomer Cements after Recharging with High-Fluoride Dentifrice

Figure 2

Mean of area under the curve (AUC) of the F release versus time (μg F/mL.day) according to materials, treatments, and experimental conditions. Vertical bars denote standard deviations. Different uppercase letters indicate significant difference among materials in each treatment/experimental conditions and different lowercase letters indicate significant difference treatments in each material/experimental condition (). indicates difference between before and after F treatments of fresh materials (). indicates difference between fresh and aged materials after each F treatments ().