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

Objective: This study aimed to evaluate F release from GICs before and after recharging with F-dentifrices and after aging process.

Methods: Fifteen specimens of GICs (conventional, resin modified, and high viscosity) and composite resin were stored individually in a polystyrene tube containing 2 ml of deionized water (DW), with water replacement every 24 hours. After 15 days, the specimens were treated with a dentifrice suspension (1 : 3 by volume) containing 0 g F/g ( = 5), 1,100 g F/g ( = 5), or 5,000 g F/g ( = 5).