On CBCT, which density color corresponds to bone and enamel?

• A. Black
• B. Gray
• C. White
• D. Mixed

Answer: (C)

On CBCT imaging, density is displayed on a grayscale from black (low density) to white (high density). Enamel and bone are the densest tissues in the scanned area, so they attenuate X-rays the most. The display maps these high attenuation values to the light end of the scale, resulting in white. Thus, enamel and bone appear white. Air appears black, and soft tissues fall somewhere in between in shades of gray. The exact shade can vary with window/level settings, but the densest structures are typically shown as white.