金瓷修复体着色剂色稳定性的研究

使用表面着色剂是改善金瓷修复体表面色的重要手段，但临床应用中，着色剂在烧结前后颜色会有一定改变。为了解着色剂颜色改变的一般规律及特点，我们采用ＣＩＥ１９７６ＬＡＢ色度系统对ＶｉｔａＶＭＫ６８的５种着色剂进行了色稳定性分析。结果表明，５种着色剂烧结后均有明显颜色改变；各着色剂颜色变化的特点不同；几种着色剂中以棕黄着色剂色稳定性最差。以上规律可指导临床医生更有效地使用着色法提高修复体质量。

The study of color stability of ceramic stains subjected to glazing temperature

Ceramic stains are used to modify the final colors of ceramic dental restorations. They are not color stable when subjected to glazing temperature. In order to understand the color change characteristics, the study tested the color stability of the five Vita VMK68 stains. The international color standard CIE1976LAB color system and CS-5 Spectrocolorimeter are used. The results indicate: significant color changes are noted for five stains; the color change characteristics among them are different; yellow-brown stain shows the most color unstability after firing.