A case where the universal shade was used by the indirect method

Abstract

In order to match the color tone of the prosthesis to the natural tooth, it is necessary not only to mimic the tooth structure, but also to match the three attributes of color: value, chroma, and hue. Light is absorbed, reflected, scattered, or transmitted when it enters an object, and humans perceive the reflected light as color, in fact as a specific color by the interrelation of value, chroma, and hue1) . Value, in particular, requires attention because it can be easily identified visually. It is extremely difficult to read these complex color tones from the shade data, and the finishing quality heavily relies on the experience and skill of the fabricator. In recent years, however, universal shade composite resins have been introduced to solve these problems and have been attracting attention. Although the dental composite resins are originally intended for direct method, the results of this study show that the same color reproducibility as that of conventional CR inlays can be achieved using the indirect method.