[Effects of fluoride releasing resin on the denture base on bovine enamel].

The first aim of this study was to investigate the amount of fluoride released from fluoride releasing resin for the denture base (F-resin). The second aim of this study was to determine the uptake of fluoride with bovine enamel, which was immersed in distilled water for 90 days in contact with F-resin. The results obtained were as follows: 1) The amount of fluoride released from F-resin decreased gradually. From the 10th day of immersion, the amount of fluoride released was almost constant. The fluoride could be detected on the 90th day. 2) The uptake of fluoride from F-resin was great both on the surface and the subsurface enamel. 3) The uptake of fluoride from F-resin was almost proportional to the immersing time.