Color accuracy in dental photography is won or lost in the fraction of a second the shutter opens. A neutral gray card, placed in the frame and used to set a custom white balance, is the quiet discipline that lets a ceramist trust the color...
A tooth is a spectrum; a photograph is three numbers. Between the light that leaves the enamel and the color that reaches the screen, something is always lost. Knowing exactly what is lost is the beginning of reproducing it well....
You composed the shot perfectly, nailed the exposure, and captured the shade. Then the lab receives an image that looks nothing like the tooth in the chair. Before you blame the camera, look at the screen you trusted. An uncalibrated monitor quietly corrupts everything you...