Preventive effect of fluoride-releasing restorative materials on dentin demineralization

Abstract

I evaluated the effect of fluoride-releasing restoratives on caries prevention by measuring the amount of decalcified calcium ions dissolved from dentin that had been soaked in acetate buffer solution. The dentin was exposed to one of the following four conditions. 1) It was immersed in distilled water for 24 hrs. 2) It was immersed in an aqueous solution of NaF (fluoride concentration 10 ppm) for 24 hrs. 3) It was bonded to one of three types of fluoride-releasing restoratives. 4) It was bonded to a non fluoride-releasing restorative. The amount of decalcified calcium ions was significantly less from the dentin bonded to fluoride releasing restoratives. These results indicated that the decrease in demineralization could be attributed to the fluoride ions that leached into the solution around the dentin.