Abstract
ObjectiveThe aim of this study was to determine the amounts of fluoride and aluminum released from different restorative materials stored in artificial saliva and double-distilled water. Material and MethodsCylindrical specimens (10 x 1 mm) were prepared from 4 different restorative materials (Kavitan Plus, Vitremer, Dyract Extra, and Surefil). For each material, 20 specimens were prepared, 10 of which were stored in 5 mL artificial saliva and 10 of which were stored in 5 mL of double-distilled water. Concentrations of fluoride and aluminum in the solutions were measured using ion chromatography. Measurements were taken daily for one week and then weekly for two additional weeks. Data were analyzed using two-way ANOVA and Duncan's multiple range tests (p<0.05). ResultsThe highest amounts of both fluoride and aluminum were released by the resin-modified glass ionomer cement Vitremer in double-distilled water (p<0.05). All materials released significantly more fluoride in double-distilled water than in artificial saliva (p<0.05). In artificial saliva, none of the materials were observed to release aluminum. ConclusionIt was concluded that storage media and method of analysis should be taken into account when the fluoride and aluminum release from dental materials is assessed.
Highlights
Fluoride released from restorative materials can inhibit demineralization as well as bacterial activities such as colonization and acid production29
Considering that the inhibition of Streptococcus mutans ATPase is higher when F and Al are combined16,17, the VLPXOWDQHRXV UHOHDVH RI DOXPLQXP DQG ÀXRULGH from dental material may play an important role in caries prevention17
The conventional GIC specimens were allowed to set under pressure at room temperature for 10 min
Summary
Fluoride released from restorative materials can inhibit demineralization as well as bacterial activities such as colonization and acid production. The most LPSRUWDQW RI WKHVH ÀXRULGHUHOHDVLQJ UHVWRUDWLYH materials are conventional glass ionomer cement *,& resin-modified glass ionomer cement 50*,& DQG SRO\DFLGPRGL¿HG FRPSRVLWH UHVLQ (PMCR). Both PMCRs and fluoride-releasing composites are known to release lower levels of ÀXRULGH WKDQ FRQYHQWLRQDO *,&V3,26. Q DGGLWLRQ WR ÀXRULGH *,&V have been found to release aluminum into an ambient solution after setting. The antibacterial activity of aluminum salt solutions against cariogenic micro-organisms has been previously reported. Considering that the inhibition of Streptococcus mutans ATPase is higher when F and Al are combined, the VLPXOWDQHRXV UHOHDVH RI DOXPLQXP DQG ÀXRULGH from dental material may play an important role in caries prevention
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