Matsumoto Dental University, School of Dentistry, Department of Dental Materials, Shiojiri, Nagano Pref., Japan.
Acta Biomater. 2010 Feb;6(2):662-6. doi: 10.1016/j.actbio.2009.08.019. Epub 2009 Aug 14.
The objective of the study was to examine the effects that fluoride ions released from different dental glass ionomer cements may have on titanium. The study included determination of the amounts of released ions and measurement of the color changes on titanium plates cemented with four kinds of commercial glass ionomer cements due to immersion of such "sandwich specimens" in 1% saline (NaCl) solution. The discoloration of titanium in the presence of glass ionomer cements was observed. In addition, for specimens cemented with two of the cements titanium ions were found in the solution after immersion. The results of the present study show that a low concentration of released fluoride ions and other elements from glass ionomer cements may cause aesthetic problems of discoloration of titanium restorations and appliances.
本研究旨在探讨不同牙科玻璃离子水门汀释放的氟离子对钛的影响。该研究包括测定释放离子的量以及测量由于将这种“三明治样品”浸入 1%盐水（NaCl）溶液中而导致的四种商业玻璃离子水门汀粘结的钛板的颜色变化。观察了玻璃离子水门汀存在下钛的变色情况。此外，对于用两种水门汀粘结的标本，在浸泡后发现溶液中有钛离子。本研究结果表明，玻璃离子水门汀释放的低浓度氟离子和其他元素可能会导致钛修复体和器械的变色等美观问题。
