Fluoride release and uptake by aged resin-modified glass ionomers and a polyacid-modified resin composite
Fluoride release and uptake by aged resin-modified glass ionomers and a polyacid-modified resin composite
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DOI：
10.1111/j.1875-595x.1999.tb00525.x
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发表时间：
1999-08-01
影响因子：
3.3
通讯作者：
Smales, RJ
中科院分区：
文献类型：
--
作者：
Yip, HK;Smales, RJ
新一代玻璃离子水门汀的氟化物释放与体重减轻的关系以及不同氟化剂的使用对修复体的影响的报道很少。本研究的目的是比较多酸修饰的树脂复合体(Dyract)和三种树脂修饰的玻璃离子水门汀(富士II LC、Photac-Fil、Vitremer)新鲜试件和老化试件的氟释放，以及三种不同氟化物充填后老化试件的氟释放与体重损失的关系。当使用这些制剂时，所有材料在摄取后立即表现出高的初始氟释放。然而，氟化物的释放水平很快就下降了。虽然Dyract和三种树脂改性玻璃离子的初始氟释放有显著差异，但在充电后使用不同的氟化剂对老化样品进行处理，在最初的几个小时内没有发现显著差异。线性回归分析也表明，累积氟化物释放与体重减轻之间没有相关性。只有频繁地将这些材料暴露在氟化物试剂中，才可能对口腔健康产生有益的影响。
Little has been reported of the relationship of fluoride release and weight loss, and the effects of use of different fluoride agents on restorations, for the new generation of glass ionomer cements. The objectives of this study were to compare fluoride release of fresh and aged specimens of a polyacid-modified resin composite (Dyract), and of three resin-modified glass ionomer cements (Fuji II LC, Photac-Fil, Vitremer); and to correlate fluoride release and weight loss of aged specimens after recharging with three different fluoride agents. All materials showed high initial fluoride release immediately after uptake when using the agents. However, the levels of fluoride release dropped rapidly soon afterwards. Although initial fluoride release was significantly different between Dyract and the three resin-modified glass ionomers, when different fluoride agents were used on aged specimens after recharging, no significant differences were found after the first few hours. Linear regression analyses also showed no correlation between cumulative fluoride release and weight loss. Possible beneficial oral health effects may only be expected by frequent exposure of these materials to fluoride agents.