Ion release from dental implants and prosthetic restoration can affect osteointegration and implant viability over a long period of time. Therefore, the aim of this study was to study the ion release from implants and crowns, with and without intermediate anodized abutments, in two different media, simulating clinical conditions. The implants, intermediate prosthetic abutments and Cr–Co crowns were divided into two groups depending on the media: Hanks’ solution and 1% lactic acid, simulating body fluids and microbiologically conditioned fluids, respectively. The study followed the ISO 10271:2011 and 10993-15:2000 standards modified to simulate the replacement of fluids in the oral environment. The ions’ release was measured by inductively coupled plasma mass spectroscopy (ICP-EOS), and only aluminum, chromium, cobalt, titanium and vanadium were identified. Ion concentration was higher in lactic acid than in Hanks’ solution at all time points (p < 0.05). Only vanadium showed a very low ion release in lactic acid, with no statistically significant differences from the ion release in Hanks’ solution (p = 0.524). Both anodized abutments and the immersion medium influenced the release of ions and affected the corrosion of these structures. The presence of an intermediate anodized abutment also affected ion release, as the level of ions was lower in groups with this component.

中文翻译：

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在生理和酸性条件下从种植牙，义齿基台和牙冠释放离子

牙科植入物的离子释放和修复修复会在很长一段时间内影响骨整合和植入物的生存能力。因此，本研究的目的是在两种不同的介质中研究带有和不带有中间阳极氧化基台的植入物和牙冠的离子释放，以模拟临床情况。植入物，中间修复基台和Cr–Co牙冠根据介质分为两组：汉克斯溶液和1％乳酸，分别模拟体液和微生物调节液。该研究遵循经过修改的ISO 10271：2011和10993-15：2000标准，以模拟口腔环境中的液体替换。离子的释放通过电感耦合等离子体质谱法（ICP-EOS）进行测量，仅铝，铬，钴，鉴定出钛和钒。在所有时间点，乳酸中的离子浓度均高于汉克斯溶液中的离子浓度（p＜0.05）。只有钒在乳酸中的离子释放非常低，与汉克斯溶液中的离子释放无统计学差异（p = 0.524）。阳极氧化基台和浸入介质都影响离子的释放并影响这些结构的腐蚀。中间阳极氧化基台的存在也会影响离子释放，因为与该组分相比，离子水平较低。