This study analysed (i) whether pathologies are accurately diagnosed in three different imaging modalities (OPG, CBCT, 3D model). Diagnostic accuracy was decent with OPG and was improved with CBCT. Next, the study assessed (ii) whether each case was classified as treatable on the basis of the present imaging modality. This result was influenced by the professional background, which influenced whether a CBCT was requested for treatment planning. Further, dentist-related factors like gender and the professional experience as a dentist also took an influence on the request for further imaging.