Abstract:
Background: Pit and fissure caries are the most prevalence of dental caries in permanent and primary posterior teeth. Application of sealant containing fluoride is a preventive approach providing a physical barrier against dental caries.
Aim: This study aimed to evaluate the amount of fluoride release from two available pit and fissure sealant materials (Transeal- F, (B) for Conseal- F.), Materials and Method: Eighty specimens were prepared from two tested materials were immersion in artificial saliva for 1, 7, 14, 21 and 28 days. The recharge of the sealant materials were evaluated after 14 days in mouthwash (potassium nitrate fluoride) and toothpaste (Sensodyne pro-enamel). The prepared specimens were kept in 20ml artificial saliva and incubate at 370C. The fluoride released was measured using spectrophotometry method. The results were statistically analyzed by using (one-way ANOVA) and T-testes.
Results: The quantity of fluoride released was higher in 1stday for both samples .The Transeal-F group showed slightly higher fluoride release than
Conseal-F. In 7th day the fluoride released from Conseal-F group was higher than that of 1st day while, Transeal-F showed lower fluoride released. At 28th day the amount of fluoride released in both groups was lowest value. In recharging analysis the Transeal-F samples showed slightly higher fluoride release than that of Conseal-F samples in both mouthwash and toothpaste, there was no significant difference between two recharging medium. The less amount of fluoride released after recharging found in day fourteen in comparison to that of first and seven day. The recharging ability in current study seems to be not effective, since it showed continues decrease of fluoride amount compared with that of day 28.
Conclusion: The ability of restorative materials for recharging by fluoride found to be depending on the material composition, the incidence of fluoride exposure, the kind and concentration of fluoride agent used.
