Marginal Microleakage of ClassV Composite Resin Restoration by the Mercox・Rhodamin Method

墨考克斯-罗达明法是一种染料渗透法。将标本浸入Mercox（一种用于血管结构的低粘度树脂）和Rhodamin B（一种荧光染料）的混合物中，使用压缩空气施加5 Kg/cm^2的压力15分钟。当用染料渗透法检测微泄漏时，必须对试样进行切片，只能观察到切片平面上的泄漏，而且这种泄漏不是序列泄漏。另一方面，在Mercox-Rhodamin法中，当样品浸入10%的硝酸中时，牙釉质和牙本质溶解。它允许直接观察渗透的Mercpx-Rhodamin树脂的整个区域。Mercox-Rhodamin法的其他优点：用这种方法检测微渗漏，往往比用染料法评价的微渗漏程度更高。该方法是一种有效的微渗漏试验方法，显示了复合树脂修复体微渗漏的明显差异。在该泄漏试验中，直接观察微泄漏的面积和通道。通过电视图像处理器（TVIP4100II）可以评估泄漏，使统计分析更容易。该泄漏试验是一种在三维环境下直接寻找泄漏复合通道的优越试验方法。

The Mercox-Rhodamin Method for marginal microleakage test is a kind of dye penetration method. The specimens were immersed in the mixture of Mercox which is a low viscosity resin and used for vascular architecture, and Rhodamin B which is a fluoresent dye, by applying a pressure of 5 Kg/cm^2 using a compressed air for 15 minutes. When microleakage is tested by using a dye penetration, the specimens must be sectionded, only the leakage in the sectioned plane can be observed and this leakage is not the sequence one. On the other hand, in the Mercox-Rhodamin method, When the specimens are immersed in the 10% Nitric acid, Enamel and Dentin disolve. It allows direct observation of the entire area of the penetrated Mercpx-Rhodamin resin.Other advantages of using the Mercox-Rhodamin Method are as follows :1. The examination of microleakage using this method tends to evaluate the higher degree of microleakage than that using the dye method.2. This method was an effective microleakage test which demonstrates clear differences in microleakage of composite resin restorations.3. In this leakage test, the area and passway of microleakage is directly observed. The leakage can be evaluated by TV immage processor (TVIP4100II), making statistical analysis easier.4. This leakage test is a superior test method to directly find the comprex passway of leakage in 3D.