Influence of Time Interval, Temperature, and Storage Condition on Fluoride Release and Recharge from Silorane Based Restorative Materials

Objectives: To investigate, assess and to compare the impact of time, temperature and storage on the fluoride release and to evaluate the variation in the reuptake of fluoride (after recharge) of the silorane based composites and methacrylate based composites. Materials and methods: The samples of SBC and MBC are synthesized for investigating the fluoride release and recharge. The study has been performed after the samples conditioning in the artificial saliva at and distilled water. The amount of fluoride release at first, seventh, fourteenth and twenty eighth days followed by the re-release after recharge has been analysed with the use of fluoride selective ion electrode. Results: SBC had higher fluoride release when compared to MBC at low temperature in artificial saliva. Fluoride release increased in day 7 but decreased over time. Fluoride re-release was greater in MBC than SBC, and it increased with time. Conclusion: The release and recharge of fluoride are influenced by temperature, time, and storage condition. The fluoride reservoir in the restoration and its low release into the oral cavity inhibits the formation of secondary caries leading to improved longevity of the restorations. This feature can be utilized as a regimen to deliver topical fluoride in the oral cavity.