The principle of spectrum CBCT imaging is similar to that of the triple prism dividing white light into seven colored lights. Based on the spectrum X-ray technology, high-energy and low-energy X-ray are emitted alternatively during scanning, together with the advanced reconstruction system, our spectrum CBCT is able to parse the broad-spectrum X-ray to the narrow-spectrum X-ray to realize the virtual monochromatic imaging. Compared to the traditional broad-spectrum X-ray imaging, the virtual monochromatic imaging can physically solve the problem of beam hardening artifacts and metal artifacts existing in dental CT imaging, which gives the dentists the most real imaging of patients.