Why is the gray background plate suitable for oral photography?

The gray background plate of oral photography is suitable for color contrast. The gray background board has good neutral brightness and uniform brightness and color, which is beneficial to compare, identify and measure the color nuances of teeth. According to the inquiry of relevant public information, in addition, the gray background board can make the teeth more prominent, reduce the interference of the external background of the teeth, and thus display the color of the teeth more clearly.