Fluoride exchange from glass ionomer preventive resin restorations.
Fluoride exchange from glass ionomer preventive resin restorations.
复制标题
玻璃离聚物预防性树脂修复体中的氟化物交换。
作者：
A. Kupietzky;M. Houpt;J. Mellberg;Z. Shey
本体内研究的目的是确定在玻璃离聚体修复体上放置密封剂是否会改变其氟化物释放，并检查局部氟化物应用4分钟对玻璃离聚体的影响。对21颗牛牙齿中玻璃离聚体预防性树脂修复体去除密封剂前后的氟化物释放量进行了测量。对Fuji II， Ketac Silver和Fuji LC进行了评价，代表了三代玻璃离子。将标本置于5ml去离子水中孵育，提取修复体中的氟化物，并于第1天和第2天通过特定离子电极测量，然后每周测量一次，持续7周。结果表明，三种离聚体的氟释放模式和量无显著差异（P < 0.05）。与相同材料的对照修复体相比，用密封剂覆盖修复体时氟化物释放显著减少（P < 0.001）。从玻璃离子预防性树脂修复体中去除密封剂后，与密封修复体相比，氟化物的释放显著（P < 0.001）。在水中浸泡63天后，对未密封的修复体进行4分钟的局部APF处理，然后再在水中浸泡27天，以检查各种材料吸收氟化物的能力。用氟化物处理的去氟修复体释放的氟化物明显多于新鲜的、未处理的离聚体修复体（P < 0.001）或汞合金修复体。由于氟化物的释放，如果发生密封剂丢失，玻璃离聚体预防性树脂修复可以为牙齿提供化学保护。
The purposes of this in vivo study were to determine if placing a sealant over a glass ionomer restoration modifies its fluoride release, and to examine the effect on glass ionomer of a 4-min application of topical fluoride. Fluoride release from glass ionomer preventive resin restorations placed in 21 bovine teeth was measured before and after removing their sealants. Fuji II, Ketac Silver, and Fuji LC were evaluated, representing the three generations of glass ionomers. Fluoride was extracted from the restorations by incubating the specimens in 5 ml deionized water and was measured by specific ion electrodes at 1 and 2 days, then once weekly for 7 weeks. The results indicated that fluoride release was not significantly different in pattern or quantity in the three types of ionomer (P > 0.05). A significant reduction in fluoride release occurred when the restorations were covered with a sealant when compared with control restorations of the same materials (P < 0.001). After removing the sealant from the glass ionomer preventive resin restorations, a significant release of fluoride occurred when compared with sealed restorations (P < 0.001). After 63 days in water, the unsealed restorations were subjected to a 4-min topical APF treatment and reimmersed in water for an additional 27 days to examine the ability of the various materials to absorb fluoride. The fluoride-depleted restorations treated with fluoride released significantly more fluoride than fresh, untreated ionomer restorations (P < 0.001) or amalgam restorations. As a result of fluoride release, the glass ionomer preventive resin restoration may afford chemical protection to the tooth if sealant loss occurs.
玻璃离聚物修复体周围体外继发龋的形成。
DOI：
--
发表时间：
1986
期刊：
Quintessence international (Berlin, Germany : 1985)
影响因子：
--
作者：
Hicks,MJ;Flaitz,CM;Silverstone,LM
通讯作者：
Silverstone,LM
牙釉质和牙骨质从玻璃离子水门汀中吸收氟化物。
影响因子：
4.2
作者：
Retief,DH;Bradley,EL;Denton,JC;Switzer,P
通讯作者：
Switzer,P