Effect of denture base-resin with prereacted glass-ionomer filler on dentin demineralization
Effect of denture base-resin with prereacted glass-ionomer filler on dentin demineralization
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DOI：
10.1111/j.1600-0722.2009.00678.x
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发表时间：
2009-12-01
影响因子：
1.9
通讯作者：
ten Cate, Jacob M.
中科院分区：
文献类型：
--
作者：
Mukai, Yoshiharu;Kamijo, Kazuko;ten Cate, Jacob M.
研究了四种实验性义齿基托树脂中的一种与牙本质接触时，牙本质的脱矿作用。这些实验树脂分别含有聚甲基丙烯酸甲酯（PMMA）和0、5、10、20或30重量%的表面反应型预反应玻璃离聚物（S-PRG）填料。牙本质薄片夹在这些树脂之间，并进行脱矿1周。显微放射性分析表明，矿物体积%的表面增加，病变的形成被抑制，在剂量-反应关系的量的S-PRG填料。此外，矿物损失减少，高达60%，随着填料量的增加。这些结果表明，含有S-PRG填料的义齿基托树脂具有显著的抑制脱矿能力，这可能有助于预防基牙的根龋。
The demineralization of dentin was studied when placed adjacent to one of four experimental denture base-resins. These experimental resins contained polymethylmethacrylate (PMMA) and 0, 5, 10, 20 or 30 wt% surface reaction-type prereacted glass-ionomer (S-PRG) filler, respectively. A dentin thin-section was sandwiched between these resins and subjected to demineralization for 1 wk. Microradiographic analyses showed that the mineral vol% of the surface was increased, and lesion formation was inhibited, in a dose-response relationship with the amount of S-PRG filler. Moreover, the mineral loss decreased, by up to 60%, with an increasing amount of filler. These results indicate that denture base-resins containing S-PRG filler possess a substantial inhibition capability against demineralization, and this may thereby assist in preventing root caries of abutment teeth.