In a dental system for the transillumination of teeth having a light source for producing examination radiation, irradiation means for directing the examination radiation at a tooth to be examined, and means for acquiring an optical image of the tooth illuminated by the examination radiation, the irradiation means includes light-guiding and/or light-deflecting elements, at least the light-guiding and/or light-deflecting element facing the tooth to be examined being embedded in a transparent, flexible coupling body that is provided to rest on the tooth or the gingiva of the tooth.
