- How does child experience caries diagnosing performed with DIAGNOcam compared to X-rays? INVESTIGATION VARIABLES: Caries data are recorded according to the accepted diagnostic method at the surface level. Each examined tooth surface is assessed as either 1) intact; 2) caries only in enamel; 3) caries i dentin; or 4) the surface can not be judged. The same classification is used for X-rays and DIAGNOcam.