Mineral trioxide aggregate (MTA) solubility and porosity with different water-to-powder ratios
Mineral trioxide aggregate (MTA) solubility and porosity with different water-to-powder ratios
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DOI：
10.1097/00004770-200312000-00007
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发表时间：
2003-12-01
影响因子：
4.2
通讯作者：
Rosado, R
中科院分区：
文献类型：
--
作者：
Fridland, M;Rosado, R
本研究测试了不同水粉比下的三氧化二矿物集合体(MTA)的溶解度和孔隙率。这项研究还确定了MTA溶解的盐的化学成分。制备了四组水粉比例为0.26、0.28、0.30和0.33克/克水泥的试件。后者是制造商推荐的比例。结果表明，随着水粉比的增加，其溶解度和孔隙率均增大。不同样本之间存在显著差异。对MTA在水中溶解的盐进行的化学分析表明，主要化学化合物是钙的存在。该溶液的pH值为高度碱性，介乎11.94至11.99。可以说，在这种高pH水平下，溶液中的钙应该处于氢氧化物状态。这种释放氢氧化钙的能力可能具有临床意义，因为它可能与已证实的MTA诱导矿化的能力有关。
This study tested mineral trioxide aggregate (MTA) solubility and porosity with different water-to-powder proportions. The study also determined the chemical composition of the salts dissolved by MTA. Four sets of specimens using the following water-to-powder proportions were prepared: 0.26, 0.28, 0.30, and 0.33 grams of water per gram of cement. The latter is the ratio recommended by the manufacturer. It was determined that the degree of solubility and porosity increased as the water-to-powder ratio increased. Significant differences were found among the sets of specimens. The chemical analyses of the salts dissolved by MTA in the water identified the presence of calcium as the main chemical compound. The pH level of the solution was highly alkaline, ranging between 11.94 and 11.99. It can be stated that the calcium found in the solution should be in its hydroxide state at this high pH level. This ability to release calcium hydroxide could be of clinical significance because it could be related to the proven capacity of MTA to induce mineralization.