目的比较VITA比色板和带金属底冠定制比色板的颜色特性。
Objective to compare the color character of VITA shade guide and the custom shade guide with metal substrate.
但临床上金瓷修复体与比色板所选颜色之间的色差问题长期存在。
Color differences have been found between the shade guide and metal ceramic restorations in clinical work.
结果：附属比色板与相应的材料间存在明显的色度差异，远远超过肉眼的识别阈。
Results: There was significant colour difference between the attached shade guide and the resin materials, and the difference were greater than the value recognized by naked eyes.
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