Inhibition of enamel demineralization by buffering effect of S-PRG filler-containing dental sealant
Inhibition of enamel demineralization by buffering effect of S-PRG filler-containing dental sealant
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DOI：
10.1111/eos.12107
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发表时间：
2014-02-01
影响因子：
1.9
通讯作者：
Sano, Hidehiko
中科院分区：
文献类型：
--
作者：
Kaga, Masayuki;Kakuda, Shinichi;Sano, Hidehiko
本研究评价了两种市售封闭剂的缓冲能力和对釉质脱矿的抑制作用。还检查了填料颗粒的影响。将牙釉质和BeautiSealant（二氧化硅或S-PRG填料）或Teethmate F-1的固化密封剂材料在乳酸溶液（pH 4.0）中孵育1-6天。评估溶液中释放的pH变化和离子量，并使用扫描电子显微镜观察釉质表面。将具有BeautiSealant（S-PRG填料）的溶液的pH从pH 4.0中和至pH 6.1（在孵育1天后）和从pH 4.0中和至pH 6.7（在孵育6天后）。此外，在扫描电子显微镜图像中，没有检测到钙离子的释放，釉质表面形态完整。然而，在第1天至第6天的孵育期间，含Teethmate F-1的溶液的pH值保持低于pH 4.0。钙释放增加的解决方案和孵育6天后。扫描电子显微镜图像显示，由于脱矿作用，羟基磷灰石棒的结构暴露在试样表面。含S-PRG填充剂的牙科密封剂释放的离子迅速缓冲乳酸溶液并抑制牙釉质脱矿。
The buffering capacity and inhibitory effects on enamel demineralization of two commercially available dental sealants were evaluated in this study. The effects of filler particles were also examined. Disks of enamel and cured sealant materials of BeautiSealant (silica or S-PRG filler) or Teethmate F-1 were incubated in lactic acid solutions (pH 4.0) for 1-6 d. The pH changes and amounts of ions released in the solutions were assessed, and enamel surfaces were observed using a scanning electron microscope. The pH of the solution with BeautiSealant (S-PRG filler) was neutralized from pH 4.0 to pH 6.1 (after incubation for 1 d) and from pH 4.0 to pH 6.7 (after incubation for 6 d). In addition, no release of calcium ions was detected and the enamel surface was morphologically intact in scanning electron microscopy images. However, the pH of the solution with Teethmate F-1 remained below pH 4.0 during incubation from days 1 to 6. Calcium release was increased in solutions up to and after 6 d of incubation. Scanning electron microscopy images showed that the structures of hydroxyapatite rods were exposed at the specimen surfaces as a result of demineralization. Ions released from S-PRG filler-containing dental sealant rapidly buffered the lactic acid solution and inhibited enamel demineralization.