Fluoride uptake by enamel of deciduous teeth from 3 types of self cured glass ionomer cements (A comparative, In-Vitro study)

The amount of fluoride uptake by teeth is considered as to be a criterion in the cariostatic properties of dental restorative materials. The aim of this study was to determine the amount of fluoride uptake by enamel of deciduous teeth from 3 types of self cured glass ionomers: Fuji II (GC Japan), Riva self-cure(SDI Australia) and SDS(Iran). This experimental study was conducted on thirty primary molars which were randomly divided into 3 groups. Each tooth was divided into buccal and lingual halves. Fuji II Glass-ionomer (GC Japan), Riva self-cure (SDI Australia) and SDS (Iran) were placed randomly on the surfaces of teeth in case group. All subjects were stored in artificial saliva (without fluoride) for a month and samples were obtained from each subject using Acid etch biopsy technique. The amount of fluoride and calcium in sample solutions were measured by potentiometer and atomic absorption spectrophotometer. The results were analyzed by t-test and ANOVA statistical tests. This study indicated that the amount of fluoride uptake by enamel of deciduous teeth from Fuji II Glass-ionomer was (146.85 ± 15.68 ppm which was significantly is higher than fluoride uptake from riva self cure (40.67±5.34 ppm) and SDS (83.68±6.40ppm) (P<0.001). Fluoride uptake by enamel of deciduous teeth was higher from Fuji II Glass-ionomer (GC Japan) in comparison with Riva self-cure(SDI Australia) and SDS(Iran).