Challenge to long-term durability of the material for dentin hypersensitivity with a remineralization ability

本研究的目的是评价牙本质过敏症材料的再矿化作用的长期持久性，以期达到防龋效果。 本研究显示含氟牙漆材料有大量的氟释放。 材料应用于牙本质表面一段时间。然后将它们从牙本质中取出，然后将样品置于口腔环境中4周。 与现有材料相比，含氟牙漆材料的脱矿作用更少，牙本质中的氟浓度更高。氟浓度越高，施用期越长。 用氢氧化钾（KOH）处理牙体标本，发现氟结合牙和非结合牙。

The purpose of this research was to evaluate long-term durability of remineralization by materials for dentin hypersensitivity, which was expected the caries prevention effect. Large amount of fluoride release from fluoride-containing tooth paint material was shown in this study. Materials were applied to dentin surface for some periods. After then they were removed from dentin, and then samples were placed into oral environment for 4 weeks. Less demineralization and more fluorine concentration into dentin from fluoride-containing tooth paint materials were indicated than that of current materials. The higher fluorine concentration was shown longer application period. The fluorine bound or no-bound tooth was found by KOH (potassium hydroxide) treatment to tooth sample.